Performance of Five Winter Wheat Cultivars when Grown in Composite and Pure Stand Populations Under Different Environmental Stresses

Download Performance of Five Winter Wheat Cultivars when Grown in Composite and Pure Stand Populations Under Different Environmental Stresses PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 246 pages
Book Rating : 4.:/5 (964 download)

DOWNLOAD NOW!


Book Synopsis Performance of Five Winter Wheat Cultivars when Grown in Composite and Pure Stand Populations Under Different Environmental Stresses by : Erdogan Indelen

Download or read book Performance of Five Winter Wheat Cultivars when Grown in Composite and Pure Stand Populations Under Different Environmental Stresses written by Erdogan Indelen and published by . This book was released on 1975 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: Five genetically and morphologically different winter wheat cultivars, Hyslop (H), Yamhill (Y), Paha (P), Luke (L), and Sprague (5) were blended in all possible combinations. These composites plus the five pure stands were planted in the fall of 1973 at three environmentally diverse locations in Oregon: Hyslop Agronomy Farm, Corvallis; Central Oregon Experiment Station, Madras; and Sherman Experiment Station, Moro. A triple lattice design was selected be cause of the large number of treatments with five filler cultivars added to balance the experiment. Eight traits, yield per plot, number of plants per plot, number of tillers per plot, number of heads per plant, yield per plant, number of kernels per head, 1000 kernel weight and plant height, were measured for each treatment. General and relative competitive ability of the cultivars in composite combinations and yield of pure stands were determined and ranked for all locations. Specific competitive ability was determined for all composite treatments. General and specific competitive ability were defined as the grain yield of the component lines across all composite combinations and within single treatments, respectively. Relative competitive ability was defined as yield of the component lines versus its pure stand in composite combinations. The rank for general and relative competitive ability and yield of pure stands were Y>H>P>L>S, Y>P>H>L>S, and H>Y>L> S>P, respectively at Corvallis. Only Hyslop yielded significantly higher than the mean of five pure stands. However, Yamhill was superior for general and relative competitive ability at this location. The rank of the component lines for general and relative competitive ability was the same at Madras (P>Y>H>S>L). But the yield rank of pure stands was different (L>H>Y>P>S). Luke and the composites, H+L+S, H+L, and H+Y+P yielded significantly higher than the mean of the five pure stands. General and relative competitive ability of cultivars when grown at Moro was Y>H>P>L>S and H>Y>P>L>S, respectively. The rank for yield for pure stands was Y>H>L>P>S. Yamhill was superior for general competitive ability and as a pure stand. However, Hyslop was superior for relative competitive ability. Pure stand Yamhill, H+L and H+Y combinations yielded significantly higher than the mean of the five pure stands. The cultivars had the same rank for general competitive ability at Corvallis and Moro. Significant differences were not found between treatments for yield in a combined analysis of variance. Analysis of variance indicated that treatments responded the same for all traits across all locations. Paha was very susceptible (80 percent) to leaf rust (Puccinia recondita) at Corvallis in 1974. Hyslop was resistant with the other cultivars having a lower percentage of disease than Paha. The 15 composite combinations containing Paha had between 20 and 50 percent leaf rust. The yield of 14 out of 15 composite combinations exceeded that of pure stand Paha. The mean infection of the five pure stands was higher than the mean infection of those composite combinations containing Paha. Composites composed of lines with different sources of resistance to leaf rust reduced the overall amount of disease. Composite populations were superior under stress or medium stress conditions whereas varieties per se were superior under ideal growing conditions. However the performance of a cultivar under pure stand conditions in a given environment is not a direct measure of its yielding ability in a composite. Therefore it will be necessary to test various composite combinations in different locations for several years before recommending a specific composite for commercial production.

Performance of Cultivars, Hybrids and Composites of Winter Wheat (Triticum Aestivum L. Em Thell) Grown at Three Locations

Download Performance of Cultivars, Hybrids and Composites of Winter Wheat (Triticum Aestivum L. Em Thell) Grown at Three Locations PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 170 pages
Book Rating : 4.:/5 (21 download)

DOWNLOAD NOW!


Book Synopsis Performance of Cultivars, Hybrids and Composites of Winter Wheat (Triticum Aestivum L. Em Thell) Grown at Three Locations by : Ruben P. Verges

Download or read book Performance of Cultivars, Hybrids and Composites of Winter Wheat (Triticum Aestivum L. Em Thell) Grown at Three Locations written by Ruben P. Verges and published by . This book was released on 1987 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this study was to compare three genetically different groups of winter wheat for their grain yield. Experimental material consisted of parental lines grown in pure stands, hybrids, and 1:1 mixtures of the parental combinations. Three sites were employed to evaluate possible interactions between the different groups across locations. Phenotypic correlations among selected agronomic traits and grain yield within each group along with the expression of heterosis and heterobeltiosis in the hybrids were studied. Results of this investigation support the general conclusion reached by other investigators that hybrids and composites are not consistently superior to the best conventional cultivars of wheat for grain yield. However, at the Moro site, with the greater environmental stresses, some hybrids and composites appeared to yield more than the parental lines grown in pure stands. At Pendleton, the best environment for yield expression, the hybrids and conventional cultivars did not differ for grain yield. At this location, the best hybrids and one composite did significantly outyield the commercial cultivars Stephens, Malcolm and Hill, but not four advanced parental selections when grown in pure stands. Low to moderate values of heterosis and heterobeltiosis for grain yield were found. The degree of expression being affected by the specific growing site. Plant height and the number of kernels per spike showed relatively higher values for heterosis and heterobeltiosis over locations when compared to the other traits. Phenotypic correlations suggested that a breeding program to develop hybrid wheat should combine high number of kernels per spike with high kernel weight. The positive correlation between grain yield and plant height indicated that increases in grain yield could be obtained by increasing plant height if lodging did not present a problem.

Agronomy News

Download Agronomy News PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.E/5 ( download)

DOWNLOAD NOW!


Book Synopsis Agronomy News by :

Download or read book Agronomy News written by and published by . This book was released on 1975 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sept.-Oct. issue includes list of theses and dissertations for U.S. and Canadian graduate degrees granted in crop science, soil science, and agronomic science during the previous academic year.

Winter Wheat Cultivar Performance in an International Array of Environments

Download Winter Wheat Cultivar Performance in an International Array of Environments PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 60 pages
Book Rating : 4.:/5 (31 download)

DOWNLOAD NOW!


Book Synopsis Winter Wheat Cultivar Performance in an International Array of Environments by : James Edward Stroike

Download or read book Winter Wheat Cultivar Performance in an International Array of Environments written by James Edward Stroike and published by . This book was released on 1972 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Comparisons of Several Generations of Winter Wheat Composite Cross Populations with a Modern Cultivar Under Organic Farming

Download Comparisons of Several Generations of Winter Wheat Composite Cross Populations with a Modern Cultivar Under Organic Farming PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 79 pages
Book Rating : 4.:/5 (11 download)

DOWNLOAD NOW!


Book Synopsis Comparisons of Several Generations of Winter Wheat Composite Cross Populations with a Modern Cultivar Under Organic Farming by : M.M. Kassie

Download or read book Comparisons of Several Generations of Winter Wheat Composite Cross Populations with a Modern Cultivar Under Organic Farming written by M.M. Kassie and published by . This book was released on 2013 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study was conducted in the organic trial field of Wageningen University and Research Centre with the objective of assessing the potentials of composite cross populations of winter wheat with the pure line cultivars. Four different aged composite cross population, one CCP-extra population and one pure line winter wheat cultivar were evaluated using a randomized complete block design with three replications. There were much more observed differences between the genotypes at the vegetative stage and not for the grain yield.

Yield and Other Agronomic Characters of Winter Wheat Cultivars as Affected by Five Seeding Rates and Three Different Environmental Conditions

Download Yield and Other Agronomic Characters of Winter Wheat Cultivars as Affected by Five Seeding Rates and Three Different Environmental Conditions PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 260 pages
Book Rating : 4.:/5 (964 download)

DOWNLOAD NOW!


Book Synopsis Yield and Other Agronomic Characters of Winter Wheat Cultivars as Affected by Five Seeding Rates and Three Different Environmental Conditions by : Mengü Güler

Download or read book Yield and Other Agronomic Characters of Winter Wheat Cultivars as Affected by Five Seeding Rates and Three Different Environmental Conditions written by Mengü Güler and published by . This book was released on 1974 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Five newly released and two Eastern European winter wheat cultivars were grown under five different seeding rates (80, 160, 240, 320, 400 seeds per m2). Four of these newly released cultivars were grown at three different locations which have different environmental conditions. Data were obtained on grain yield, tiller number per plant, 1000 kernel weight, seed number per spike, plant and spike number per unit area, plant height, heading and maturity dates. At the lowest rate of seeding the grain yield was significantly lower at all three locations. Although there were no significant differences for grain yield for all the other seeding rates, maximum yields were obtained from lower seeding rates at Ryan while at Hyslop and Madras, which had better moisture conditions, maximum yields were obtained at higher seeding rates. This situation was not observed for the Yamhill cultivar in which maximum yields were obtained at 160 seeds per m2 seeding rate at all three locations. Tillers per plant value decreased as the seeding rate increased. Hyslop and McDermid produced significantly higher number of tillers per plant from the other cultivars. Significantly highest 1000 kernel weight values were obtained at the lowest seeding rate. Yamhill produced the highest significant 1000 kernel weight while Paha produced the lowest. Seeds per spike value followed the same order as tillers per plant and 1000 kernel weight showing a continuous decrease with the increased rates of seeding. The number of plants per m2 was a direct linear function of seeding rate. The number of spikes per m2 increased curvilinearly with the increased seeding rate. Hyslop and McDermid produced the highest significant number of spikes per m2 because of their higher tillering ability. Plant height increased with increased rates of seeding because of the increased competition for light. Yamhill and Paha were significantly the tallest cultivars. The tallest plants were observed at Hyslop. There was a decrease in the number of days in heading and maturity as the rates of seeding increased. The cultivars ranked in the order Paha> Yamhill> Hyslop> McDermid for heading and maturity dates. Heading first occurred at Hyslop followed by Ryan and Madras while maturity occurred first at Ryan followed by Hyslop and Madras. Highly positive correlations were observed among plants per m2, spikes per m and seeding rate while these factors correlated negatively with tillers per plant, 1000 kernel weight and seeds per spike. The regression equations showed that maturity date, heading date and spikes per m2 values were the most important factors for predicting yield.

Adaptability of Winter Wheat Cultivars to Dryland Conditions and Their Response to Water Stress

Download Adaptability of Winter Wheat Cultivars to Dryland Conditions and Their Response to Water Stress PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 294 pages
Book Rating : 4.:/5 (99 download)

DOWNLOAD NOW!


Book Synopsis Adaptability of Winter Wheat Cultivars to Dryland Conditions and Their Response to Water Stress by : Don Lee Keim

Download or read book Adaptability of Winter Wheat Cultivars to Dryland Conditions and Their Response to Water Stress written by Don Lee Keim and published by . This book was released on 1974 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: Winter wheat cultivars (Triticum aestivum) were evaluated for their response to water stress and adaptability to a wide range of moisture limited environments. Grain yield was analyzed for ten cultivars at six locations across four years. Regression of the cultivar mean on the year-location mean was used as a measure of the environmental response of a particular cultivar, Plant water status (leaf osmotic potential and water potential) during the grain filling period, along with grain yield and yield components were determined at three locations for fifteen cultivars under space-planted conditions in 1972 and for ten cultivars under solid-seeding in 1973. Five cultivars were evaluated for plant water status and rates of growth during reproductive development and for final grain yield and yield components at a severely stressed location in 1973. Drought resistance, described as yielding ability under severe soil moisture stress, was found to be the result of avoidance, tolerance and escape characteristics. Plant water status influenced the components of yield when their development occurred during a period of high external stress. However, the relative importance of plant water status to final yield varied depending on the magnitude of the direct effect of spike number on yield. Drought avoidance was the ability to maintain a high plant water status when under high external stress conditions. In the cultivar Yamhill, the stable growth rate during inflorescence development and the extended period of grain filling may have resulted from the ability of this cultivar to avoid drought. These characteristics, also, may explain the large spikelet number and the high kernel weight of Yamhill. Even though Hyslop and Wanser had a moderate and high internal water stress, respectively, they were relatively tolerant of stress in terms of high growth rates during the grain filling period. The high yielding ability of Wanser and McDermid under high stress conditions was primarily related to a large number of spikes. This trait was considered an escape characteristic because tillering was established before the onset of severe stress. The club wheats neither avoided or tolerated internal water stress under solid-seeded conditions nor did they have sufficient tillering capacity to compensate for the effect of stress on the laterdeveloped components.of yield. Nugaines, Hyslop and Rew maintained a moderate internal stress during later development but differed in their yield component responses. The yield of Nugaines depended primarily on a high tillering capacity, whereas the yield of Hyslop and Rew depended on a balance of contributions from all the components of yield. Widely adapted cultivars, such as Hyslop and McDermid, not only yielded well under severe stress conditions but had the genetic potential to respond adequately to more favorable moisture conditions. Cultivars specifically, adapted to lower yielding environments, such as Yamhill and Wanser, were able to avoid, tolerate or escape drought but were limited in one or more of their yield component responses to better conditions. Conversely, cultivars specifically adapted to high yielding environments, such as Nugaines and Paha, lacked the ability to consistently yield well under high stress environments but had a high response to more favorable moisture conditions. Cultivars best adapted to dryland cultivation should have the highest yield under stress conditions as expressed through the components of yield by one or a combination of avoidance, tolerance or escape characteristics. These cultivars should also have the maximum expression in, and balance among, the components of yield for maximum response to more favorable moisture conditions. This goal may be obtained by selection in favorable as well as stressed environments and by testing throughout the range of the environments where the cultivar is expected to be grown. Because high yield under stress was found in this study to be manifested through different characteristics of the plant the breeder should be aware of traits which may contribute to drought resistance, but he should not be restricted to a particular ideotype when breeding for yield under conditions of high moisture stress.

The Influence of Drought on Stand Establishment of Winter Wheat Cultivars

Download The Influence of Drought on Stand Establishment of Winter Wheat Cultivars PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 51 pages
Book Rating : 4.:/5 (79 download)

DOWNLOAD NOW!


Book Synopsis The Influence of Drought on Stand Establishment of Winter Wheat Cultivars by : R. H. Skinner

Download or read book The Influence of Drought on Stand Establishment of Winter Wheat Cultivars written by R. H. Skinner and published by . This book was released on 1983 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt: Five varieties and three breeding lines of winter wheat (Triticum aestivum L.) were compared for drought resistance at the seedling stage. Emergence under a greenhouse line-source sprinkler system was compared with germination in PEG 6000 and mannitol solutions as well as with seed weight and the ability to emerge from deep planting. No significant correlation existed between line-source emergence and germination in PGE or mannitol, emergence from deep planting or seed weight. Within varieties, light seeds (average 50 seed weight 1.313 g) germinated better under moisture stress than heavier ones (average 50 seed weight = 1.991 g) but there was no significant correlation between seed weight and germination among varieties. Seedling maturation rates were measured using the Haun index while total dry weight was used to indicate productivity. Shoot weight, root weight, root/shoot ratio, leaf water potencial and plant height were compared with productivity and maturation rate. None were found to be correlated with the index. Plant height, shoot weight and root weight were all significantly correlated with total dry weight. Plant height is suggested as a convenient, nondestructive indicator of total plant productivity. No correlation was found to exist between emergence under drought conditions and the ability of seedlings to grow under moisture stress. What little relationship existed between the two was generally negative, making incorporation of drought resistance at both stages into one variety difficult.

Performance of Winter Wheat Cultivars in Organic and Conventional Farming Systems

Download Performance of Winter Wheat Cultivars in Organic and Conventional Farming Systems PDF Online Free

Author :
Publisher :
ISBN 13 : 9783037361856
Total Pages : 119 pages
Book Rating : 4.3/5 (618 download)

DOWNLOAD NOW!


Book Synopsis Performance of Winter Wheat Cultivars in Organic and Conventional Farming Systems by :

Download or read book Performance of Winter Wheat Cultivars in Organic and Conventional Farming Systems written by and published by . This book was released on 2010 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Temperature and Moisture Effects on Stand Establishment of Seven Winter Wheat Cultivars and Selected Progeny (Triticum Aestivum, L Em Thell

Download Temperature and Moisture Effects on Stand Establishment of Seven Winter Wheat Cultivars and Selected Progeny (Triticum Aestivum, L Em Thell PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 288 pages
Book Rating : 4.:/5 (938 download)

DOWNLOAD NOW!


Book Synopsis Temperature and Moisture Effects on Stand Establishment of Seven Winter Wheat Cultivars and Selected Progeny (Triticum Aestivum, L Em Thell by : Michael Patrick Conway

Download or read book Temperature and Moisture Effects on Stand Establishment of Seven Winter Wheat Cultivars and Selected Progeny (Triticum Aestivum, L Em Thell written by Michael Patrick Conway and published by . This book was released on 1977 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laboratory studies were conducted under different temperature and moisture regimes to evaluate the effects of temperature and moisture on stand establishment and seedling characteristics associated with stand establishment. Percent stand and days to 25% emergence were used as indexes of stand establishment. Seedling characteristics analyzed were: shoot length, coleoptile length, seedling dry weight, and Adenosine Triphosphate (ATP) content. Each of these characteristics were tested with regards to predicting stand establishment over a wide range of temperature and moisture conditions. Experiments on stand establishment were also conducted under field conditions at the Sherman Experiment Station in north-central Oregon. The degree of association between stand establishment estimates obtained in the field and estimates of stand establishments obtained in the laboratory was determined. Attempts were also made to determine the mode of inheritance of coleoptile length and Adenosine Triphosphate and the association of these characteristics with stand establishment in early generations. Seven soft white winter wheat cultivars (Yamhill, Moro, Stephens, McDermid, Hyslop, Luke, and Daws) were used in the laboratory and field experiments. Parents, F1 s, and F2s from crosses among four of the cultivars (Yamhill, Moro, McDermid, and Daws) were utilized in the inheritance studies of coleoptile length and ATP. Broad sense heritability estimates for coleoptile length were computed using the parental and F2 variances. Frequency distribution of coleoptile length were tested for their fit to normality by use of the chi square test. Narrow sense heritability estimates for coleoptile length and Adenosine Triphosphate were computed using the standard unit (correlation) and regression methods. Three temperatures levels 8, 15, and 22°C) and three soil moisture levels ( -2, -4, and -6 bars) were used to study the effects of temperature and moisture on stand establishment and stand establishment characteristics of the seven cultivars in the laboratory. Different temperature and moisture levels exhibited significant effects on percent stand, days to 25% emergence, shoot length, coleoptile length, seedling dry weight, and ATP. Increasing temperature from 8 to 22°C resulted in decreases in percent stand, days to 25% emergence, and coleoptile length. Shoot length, seedling dry weight, and ATP increased as temperature was increased from 8 to 22°C. Increasing moisture stress from -2 to -6 bars had a significant negative effect on percent stand, emergence rate, and each of the seedling characteristics studied. Coleoptile length was found to be the best predictor of percent stand over the entire range of temperature and moisture combinations utilized in the laboratory. Percent stand was observed to decrease whenever coleoptile length was less than the depth of planting. Shoot length was found to be the best predictor of days to 25% emergence over the entire range of temperature and moisture levels. Semi-dwarf cultivars produced poorer stands than tall cultivars due to their coleoptile length. This difference in stand establishment capability was most pronounced under the warmest temperature (22°C) and the greatest moisture stress ( -6 bars). Estimates of minimum gene number together with data obtained from frequency distribution indicated that the inheritance of coleoptile length was controlled by one to three major genes and possibly some modifier genes. The close agreement between broad and narrow sense heritability estimates indicated that the expression of coleoptile length is controlled primarily by additive gene action. This suggests that selection for coleoptile length in early generations should give reliable estimates of coleoptile length expression in later generations. The heritability of Adenosine Triphosphate (ATP) was found to be subject to cytoplasmic influence. Maternal effects in the F1 generation, the occurrence of considerable inbreeding depression in the F2 generation, and relatively low narrow sense heritability estimates suggest that ATP can not be used as a selection character for seedling vigor in early generations of wheat in a conventional breeding program. Several characteristics (coleoptile length, ATP, plant height, and seed weight) were tested for their association with percent stand in the F 1 and F2 populations. None of these characteristics were significantly correlated with percent stand. Of these characteristics, coleoptile length produced the highest correlations with percent stand in the F 1 and F2 generations. The use of coleoptile length as a selection character for percent stand in early generations appears promising.

Response of Five Winter Wheat Cultivars to Three Seeding Rates and Six Planting Dates

Download Response of Five Winter Wheat Cultivars to Three Seeding Rates and Six Planting Dates PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 106 pages
Book Rating : 4.:/5 (63 download)

DOWNLOAD NOW!


Book Synopsis Response of Five Winter Wheat Cultivars to Three Seeding Rates and Six Planting Dates by : Stephen William Barrett

Download or read book Response of Five Winter Wheat Cultivars to Three Seeding Rates and Six Planting Dates written by Stephen William Barrett and published by . This book was released on 1979 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:

New Mexico Winter Wheat Variety and Hybrid Performance Test

Download New Mexico Winter Wheat Variety and Hybrid Performance Test PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 38 pages
Book Rating : 4.0/5 ( download)

DOWNLOAD NOW!


Book Synopsis New Mexico Winter Wheat Variety and Hybrid Performance Test by :

Download or read book New Mexico Winter Wheat Variety and Hybrid Performance Test written by and published by . This book was released on 1991 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Winter Wheat Cultivar Performance in an International Array of Environments

Download Winter Wheat Cultivar Performance in an International Array of Environments PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 48 pages
Book Rating : 4.:/5 (222 download)

DOWNLOAD NOW!


Book Synopsis Winter Wheat Cultivar Performance in an International Array of Environments by : J. E. Stroike

Download or read book Winter Wheat Cultivar Performance in an International Array of Environments written by J. E. Stroike and published by . This book was released on 1972 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Results of the Fifth International Winter Wheat Performance Nursery Grown in 1973

Download Results of the Fifth International Winter Wheat Performance Nursery Grown in 1973 PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 196 pages
Book Rating : 4.:/5 (31 download)

DOWNLOAD NOW!


Book Synopsis Results of the Fifth International Winter Wheat Performance Nursery Grown in 1973 by :

Download or read book Results of the Fifth International Winter Wheat Performance Nursery Grown in 1973 written by and published by . This book was released on 1976 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Results of the Third International Winter Wheat Performance Nursery

Download Results of the Third International Winter Wheat Performance Nursery PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 144 pages
Book Rating : 4.:/5 (31 download)

DOWNLOAD NOW!


Book Synopsis Results of the Third International Winter Wheat Performance Nursery by :

Download or read book Results of the Third International Winter Wheat Performance Nursery written by and published by . This book was released on 1973 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Influence of Planting Density on Spike Size and Grain Yield in Five Winter Wheat Cultivars

Download Influence of Planting Density on Spike Size and Grain Yield in Five Winter Wheat Cultivars PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 114 pages
Book Rating : 4.:/5 (283 download)

DOWNLOAD NOW!


Book Synopsis Influence of Planting Density on Spike Size and Grain Yield in Five Winter Wheat Cultivars by : Shi Ping Wang

Download or read book Influence of Planting Density on Spike Size and Grain Yield in Five Winter Wheat Cultivars written by Shi Ping Wang and published by . This book was released on 1990 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Physiological Measurements of Winter Wheat Under Stress

Download Physiological Measurements of Winter Wheat Under Stress PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 182 pages
Book Rating : 4.:/5 (643 download)

DOWNLOAD NOW!


Book Synopsis Physiological Measurements of Winter Wheat Under Stress by : Calvin H. Pearson

Download or read book Physiological Measurements of Winter Wheat Under Stress written by Calvin H. Pearson and published by . This book was released on 1979 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: