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Effect Of Natural Selection On Grain Yield And Other Plant Characteristics In Selfed And Random Mating Grain Sorghum Populations
Download Effect Of Natural Selection On Grain Yield And Other Plant Characteristics In Selfed And Random Mating Grain Sorghum Populations full books in PDF, epub, and Kindle. Read online Effect Of Natural Selection On Grain Yield And Other Plant Characteristics In Selfed And Random Mating Grain Sorghum Populations ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Effect of Natural Selection on Grain Yield and Other Plant Characteristics in Selfed and Random Mating Grain Sorghum Populations by : Ketema Belete
Download or read book Effect of Natural Selection on Grain Yield and Other Plant Characteristics in Selfed and Random Mating Grain Sorghum Populations written by Ketema Belete and published by . This book was released on 1987 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Impact of Antagonistic Versus Synergistic Selection and Per Se Performance on Adaptation of a Grain Sorghum Population by : Gabriel Alves Maciel
Download or read book The Impact of Antagonistic Versus Synergistic Selection and Per Se Performance on Adaptation of a Grain Sorghum Population written by Gabriel Alves Maciel and published by . This book was released on 1996 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: As world population increases and arable land for agricultural production either decreases or is shifted into more adverse environment, a need has arisen for the effective breeding of new cultivars of existing crop species adapted to these new conditions. Thus, the objectives of this study, were to assess the impact of selection for increased grain yield in a single low-productivity environment (antagonistic selection) versus a high productivity environment (synergistic selection); the impact of selection using per se performance (S1 families) for two cycles in a grain sorghum random-mating population, KP9B, for their effectiveness to develop population of lines with improved grain yield and reduced environmental sensitivity; to evaluate the effectiveness ofantagonistic versus synergistic selection in changing yield and its associated trait components after two cycles of S1 family recurrent selection, and to consider possible morpho physiological aspects of different traits on adaptation of KP9B population. In 1993 and 1994, the 100 S1, 50 full-sib, and 50 half-sib families from each population (C0, C2Gc, and C2MD) were evaluated in two replications of a blocks-in-replication design with 4 blocks of 26 entries for the S1 families (four commercial hybrids used as checks) and 2 blocks of 26 entries for the full-sib and half-sib families (two commercial hybrids used as checks). Four deverse locations were used in the experiments: Garden City, KS; Hesston, KS; Mead, NE, and Caruaru, PE, Brazil. Results showed (...).
Book Synopsis Effects of Mass Selection for Quantitative Traits in Sorghum by : Vichitr Benjasil
Download or read book Effects of Mass Selection for Quantitative Traits in Sorghum written by Vichitr Benjasil and published by . This book was released on 1967 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seven generations of two-way mass selection for three quantitative traits, seed size, height and flowering date, have been studied in this experiment. 1. Heretability parameters for all three characters have been estimated from the variance between and within selfed families and the degree of inbreeding. The three characters showed h2 estimates between 16-28%. 2. Response to selection, generation by generation, was measured in experimental plots in two years. Selection for seed size and height gave a good response up to the seventh generation of selection. Selection for earliness was ineffective,. However, selection for lateness gave a small but significant response. 3. Observed response for seed size and height agreed relatively well with the expected response calculated from the estimated h2 and selection intensity. 4. Significant correlated response of lateness was found in both directions of seed size selection and in the tall selection. The number of panicles in the seventh generations of tall selection was twice that of the base populations. 5. The three characters studied showed markedly different degrees of genotype-environment interactions. Seed size was the least sensitive and flowering date was the most sensitive to environmental influences. 6. Selection for minute seed drastically reduced grain yield (up to 50%) in seven generation of selection. No marked or consistent trends in yield were observed for the other selection criteria. 7. Intermediate seed size was optimum with respect to fitness. (...).
Book Synopsis Effect of Row Width and Plant Population on Agronomic Characteristics, Grain Yield, and Yield Components of Grain Sorghum by : Yahya Bin Awang
Download or read book Effect of Row Width and Plant Population on Agronomic Characteristics, Grain Yield, and Yield Components of Grain Sorghum written by Yahya Bin Awang and published by . This book was released on 1986 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis American Doctoral Dissertations by :
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1987 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Irrigation Schedule and Plant Population on Grain Yield and Other Characteristics of Grain Sorghum by : Nazir Ahmad Sidhu
Download or read book Effect of Irrigation Schedule and Plant Population on Grain Yield and Other Characteristics of Grain Sorghum written by Nazir Ahmad Sidhu and published by . This book was released on 1965 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Index to American Doctoral Dissertations by :
Download or read book Index to American Doctoral Dissertations written by and published by . This book was released on 1989 with total page 1252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Plant Population on Agronomic Characterisitcs and Yield of Cotton and Grain Sorghum by : J.B. Pitombeira
Download or read book Effect of Plant Population on Agronomic Characterisitcs and Yield of Cotton and Grain Sorghum written by J.B. Pitombeira and published by . This book was released on 1972 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Field experiments were conducted at the University of Arizona Experiment Farm at Marana, Arizona, in 1970, to determine the effects of four plant populations on yield and agronomic characteristics of the cotton (Gossypium hirsutum L.) cultivar "Deltapine 16" and the grain sorghum[Sorghum bicolor (Linn.) Moench] hybrid "DeKalb A25". Significant differences in seed cotton yield due to plant populations were found. Boll size, lint percent, lint index, seed index, seed per boll, fiber length (upper half mean), fiber strength, fiber fineness, and plant height were not significantly affected by plant population. The efficiency of mechanical harvesting increased with plant population. No significant differences were found in grain sorghum yield due to the plant populations used in this test. Plant height, heads per plot, and seed index increased with plant populations, but head weight, yield per plants, heads per plant, and seed moisture content decreased. Plant population did not affect trash percentage with the combine used in this experiment.
Book Synopsis Variability in Yield and Grain Filling Period Length in Random Mating Sorghum Population Selections and Their Hybrids by : David R. Basiime
Download or read book Variability in Yield and Grain Filling Period Length in Random Mating Sorghum Population Selections and Their Hybrids written by David R. Basiime and published by . This book was released on 1977 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Plant Population on Agronomic Characteristics and Yield of Cotton and Grain Sorghum by : Joao Bosco Pitombeira
Download or read book Effect of Plant Population on Agronomic Characteristics and Yield of Cotton and Grain Sorghum written by Joao Bosco Pitombeira and published by . This book was released on 1972 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Genetics, Genomics and Breeding of Sorghum by : Yi-Hong Wang
Download or read book Genetics, Genomics and Breeding of Sorghum written by Yi-Hong Wang and published by CRC Press. This book was released on 2014-07-08 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sorghum is one of the hardiest crop plants in modern agriculture and also one of the most versatile. Its seeds provide calorie for food and feed, stalks for building and industrial materials and its juice for syrup. This book provides an in-depth review of the cutting-edge knowledge in sorghum genetics and its applications in sorghum breeding. Each chapter is authored by specialists in their fields to report the latest trends and findings. The book showcases the definitive value of sorghum as a model system to study the genetic basis of crop productivity and stress tolerance and will provide a foundation for future studies in sorghum genetics, genomics, and breeding.
Download or read book Crop Photosynthesis written by N.R. Baker and published by Elsevier. This book was released on 2013-10-22 with total page 471 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since photosynthetic performance is a fundamental determinant of yield in the vast majority of crops, an understanding of the factors limiting photosynthetic productivity has a crucial role to play in crop improvement programmes. Photosynthesis, unlike the majority of physiological processes in plants, has been the subject of extensive studies at the molecular level for many years. This reductionist approach has resulted in the development of an impressive and detailed understanding of the mechanisms of light capture, energy transduction and carbohydrate biosynthesis, processes that are clearly central to the success of the plant and the productivity of crops. This volume examines in the widest context the factors determining the photosynthetic performance of crops. The emphasis throughout the book is on the setting for photosynthesis rather than the fundamental process itself. The book will prove useful to a wide range of plant scientists, and will encourage a more rapid integration of disciplines in the quest to understand and improve the productivity of crops by the procedures of classical breeding and genetic manipulation.
Book Synopsis A Guide to Sorghum Breeding by : Leland Ralph House
Download or read book A Guide to Sorghum Breeding written by Leland Ralph House and published by . This book was released on 1989 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Planting Geometry, Hybrid Maturity, and Population Density on Yield and Yield Components in Sorghum by : Kalaiyarasi Pidaran
Download or read book Effect of Planting Geometry, Hybrid Maturity, and Population Density on Yield and Yield Components in Sorghum written by Kalaiyarasi Pidaran and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Prior studies indicate clumped planting can increase grain sorghum yield up to 45% under water deficit conditions by reducing tiller number, increasing radiation use efficiency, and preserving soil water for grain fill. The objective of this study was to evaluate effects of planting geometry on sorghum grain yield. The field study was conducted in seven environments with two sorghum hybrids, four populations, and two planting geometries. Crop responses included leaf area index, yield, and components of yield. Delayed planting decreased yield by 39%, and a later maturing hybrid increased yield, relative to an early hybrid, by 11% under water sufficiency. Clumped planting increased the fraction of fertile culms (culms which formed panicles) from 5-14%. It reduced the number of culms m−2 by 12% under water limiting conditions (at one of two locations) but increased culms m−2 16% under water sufficiency. Seeds per panicle and seed weight generally compensated for differences in panicles m−2, which were related to different planting population densities. Although agronomic characteristics of hybrids varying in maturity have been widely studied, little information exists concerning their physiological differences. Therefore, the objective of the greenhouse study was to determine if stomatal resistance, leaf temperature, and leaf chlorophyll content differed between two DeKalb grain sorghum [Sorghum bicolor (L.) Moench] hybrids. They were DKS 36-16 and DKS 44-20, of medium-early and medium maturity, respectively, when grown under field conditions in Kansas. Seeds were planted in a greenhouse. Stomatal resistance and leaf temperature were measured 55 days after planting with a Decagon Devices (Pullman, WA) diffusion porometer, and chlorophyll content was measured 119 days after planting with a Konica Minolta (Osaka, Japan) SPAD chlorophyll meter. The two hybrids did not differ in stomatal resistance, leaf temperature, chlorophyll content, height, and dry weight. Their difference in maturity was not evident under the greenhouse conditions. Future work needs to show if hybrids of different maturities vary in physiological characteristics.
Book Synopsis Effects of Population, Nitrogen Application Rates and Their Interactions on Grain Yield, Percent Grain Protein and Other Agronomic Characteristics of Three Sorghum (Sorghum Bicolor (L.) Moench) Hybrids by : Damana Jamari Gaya
Download or read book Effects of Population, Nitrogen Application Rates and Their Interactions on Grain Yield, Percent Grain Protein and Other Agronomic Characteristics of Three Sorghum (Sorghum Bicolor (L.) Moench) Hybrids written by Damana Jamari Gaya and published by . This book was released on 1975 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1976 with total page 1732 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Different Light Intensities, Nitrogen Levels and Population Densities on Grain Sorghum by : C. D. Carcallas
Download or read book Effects of Different Light Intensities, Nitrogen Levels and Population Densities on Grain Sorghum written by C. D. Carcallas and published by . This book was released on 1975 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Grain sorghum (Cosor 3) was grown under three light regimes, i.e., in full sunlight, 25% shade, and 50% shade at three levels each of nitrogen and plant population density to evaluate its yield and other, important characteristicssuch as: leaf lenght, leaf width, leaf area index,100-grain weight, grains per panicle, panicle yield, grain-stover ratio, threshing percentage, total dry matter production, panicle lenght, plant height and number of days to blooming. In addition, leaf nitratereductase activity and grain tannin concentration were analyzed. Plantpopulation densities used were 150, 000, 200, 000 and 250,000 plt/ha; the nitrogen levels at 0, 75, and 150 Kg N/ha; and 0, 25, 50 per cent shading. The statistical design split-split plot was used with plant population density as the main plot, nitrogen level as the sub plot, and light intensity as the sub-sub plot. The experiment was conducted during the dry season (January-April, 1975) at the Central Experiment Station, University of the Philippines at Los Banos, Laguna. The yielding capacity of grain sorghum (Cosor 3) in terms of its total dry matter,grain yield, and grain tannin concentration was reduced at low light intensyti. The results have shown that: l. Grain sorghum (Cosor 3) yielded differently at different combinations of plants density, nitrogenlevels, and light intensity. 2. Increasing plant population density up to 250,000 plt/ha consistently resulted in reduction of such characters as: leaf length, leaf width, plant height, and number of grains perpanicle. In spite of the depressive effects of dense population on individual plants, grain yield is co compensated by the increase in number of panicles per unit area. Higher plant population density is advantageous only at high light intensity, while at lower light intensity lower plant population is preferred. 3. Fertilized plants matured 10 days earlier than the unfertilized. Plants treated with 150 Kg N/ha produced higher grain yield at higher light intensity. Under shaded condition, grain yields from 75 and 150 Kg N/ha were comparable. 4. Grain tannin concentration was lower at high nitrogen rates. At high light intensity, grain tannin concentration was also high. 5. Leaf nitrate reductase activity was maximum at 25% shade and ao lower nitrogen level. At higher nitrogen rates, maximum nitrate reductase activity was obtained from the unshaded plants.
