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Physiological Investigations Of Drought And Heat Resistance In Sorghum Sorghum Bicolor L Moench
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Book Synopsis Physiological Investigations of Drought and Heat Resistance in Sorghum (Sorghum Bicolor (L.) Moench) by : James Gala Odra
Download or read book Physiological Investigations of Drought and Heat Resistance in Sorghum (Sorghum Bicolor (L.) Moench) written by James Gala Odra and published by . This book was released on 1985 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Physiological Investigations of Drought and Heat Resistance in Sorghum (Sorghum Bicolor (L.) Moench by : J. G. Odra
Download or read book Physiological Investigations of Drought and Heat Resistance in Sorghum (Sorghum Bicolor (L.) Moench written by J. G. Odra and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Physiological Aspects of Drought Resistance in Sorghum (Sorghum Bicolor L. Moench) Hybrids which Differ in Leaf Retention During Grain-fill by : Brenda Lynn McIntyre
Download or read book Physiological Aspects of Drought Resistance in Sorghum (Sorghum Bicolor L. Moench) Hybrids which Differ in Leaf Retention During Grain-fill written by Brenda Lynn McIntyre and published by . This book was released on 1983 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Physiological Characteristics of Sorghums [Sorghum Bicolor (L.) Moench] Related to Drought Resistance by : Sidy B. Coulibaly
Download or read book Physiological Characteristics of Sorghums [Sorghum Bicolor (L.) Moench] Related to Drought Resistance written by Sidy B. Coulibaly and published by . This book was released on 1991 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Physiologic and Morphologic Investigations of Grain Sorghum [Sorghum Bicolor (L.) Moench] by : Joe Harry Hultquist
Download or read book Physiologic and Morphologic Investigations of Grain Sorghum [Sorghum Bicolor (L.) Moench] written by Joe Harry Hultquist and published by . This book was released on 1973 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Physiological Investigations of Grain Sorghum [sorghum Bicolor (L.) Moench] Subjected to Water Stress Conditions by : Jerry R. Rice
Download or read book Physiological Investigations of Grain Sorghum [sorghum Bicolor (L.) Moench] Subjected to Water Stress Conditions written by Jerry R. Rice and published by . This book was released on 1979 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Physiologic and Morphologic Investigations of Grain Sorghum (sorghum Bicolor (L.) Moench) by : Joe H. Hultquist
Download or read book Physiologic and Morphologic Investigations of Grain Sorghum (sorghum Bicolor (L.) Moench) written by Joe H. Hultquist and published by . This book was released on 1973 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Physiologic and Morphologic Investigations of Grain Sorghum [Sorghum Bicolor (L.) Moench]: I. Vascularization. II. Response to Internal Drought Stress by : Joe H. Hultquist
Download or read book Physiologic and Morphologic Investigations of Grain Sorghum [Sorghum Bicolor (L.) Moench]: I. Vascularization. II. Response to Internal Drought Stress written by Joe H. Hultquist and published by . This book was released on 1973 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Physiological and Genetic Characterization of Sorghum Exposed to Early Season Chilling and Terminal Heat and Drought Stress by : Anuj Chiluwal
Download or read book Physiological and Genetic Characterization of Sorghum Exposed to Early Season Chilling and Terminal Heat and Drought Stress written by Anuj Chiluwal and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Sorghum (Sorghum bicolor (L.) Moench) is one of the hardiest crop to abiotic stresses compared with other grain crops. However early stage chilling, terminal heat and drought stress are three most damaging abiotic stresses that have limited sorghum productivity in the US Great plains and other locations having similar environmental conditions. Three studies were conducted with an overall goal aimed at increasing grain sorghum's resilience to harsh climatic conditions. In the first study, four promising chilling stress tolerant sorghum advanced breeding lines, a known early stage chilling tolerant Chinese landrace (Shan Qui Red - SQR) and a susceptible US elite cultivar (RTx430) as checks were assessed for chilling tolerance during emergence and early growth under field and controlled environments. Aerial phenotyping using unmanned aircraft systems (UAS) fitted with multispectral camera was used to capture reflectance-based vegetation indices (NDVI and NDRE) in field experiments. Some advanced breeding lines with superior agronomic background also recorded significantly better emergence, seedling growth and vigor compared to SQR under chilling conditions. Aerial phenotyping indices from images taken between 30 and 60 days after emergence were consistently correlated with destructive measurements under early plantings, indicating their effectiveness in differentiating chilling responses. Second study was conducted to understand physiological mechanisms inducing heat stress resilience in sorghum during flowering. A diverse set of sorghum inbreds and selected hybrids were tested under greenhouse, growth chamber facilities and field conditions. A highly conserved early-morning-flowering mechanism was observed across all the inbreds and hybrids, with the peak anthesis wherein >90% of florets completed flowering within 30 min after dawn. The conserved response was consistent even under drought stress and heat stress exposure imposed at different times of the day. Our findings report a novel heat escaping early-morning-flowering mechanism effectively employed by sorghum to minimize heat stress impact at anthesis. Another experiment with sequential increase in daytime temperature treatments suggest heat stress induced loss in pollen viability to be a key factor resulting in reduced seed-set and grain yield. The findings suggest heat stress could have a greater impact on post-pollen germination processes such as fertilization, embryo formation and development. We identified a heat tolerant genotype "Macia" which appears to be a promising donor for developing improved heat tolerant sorghum hybrids. In the third study, a bi-parental recombinant inbred lines (RILs) mapping population developed from elite post flowering drought susceptible cultivar (RTx430) and a known drought tolerant cultivar (SC35) were evaluated under wide spectrum of environments and moisture conditions. Several novel and major QTL for grain yield, panicle neck diameter, effective quantum yield of photosystem II and chlorophyll content were identified. The genomic regions and the candidate genes within these regions can potentially help in improving source and sink dynamics in sorghum under diverse environments. The findings from these studies will complement ongoing efforts in developing future sorghum with enhanced resilience to different abiotic stresses that continue to limit sorghum productivity.
Book Synopsis Physiological Investigations of Nitrogen Use Efficiency in Grain Sorghum (Sorghum Bicolor (L.) Moench) by : H. R. Lafitte
Download or read book Physiological Investigations of Nitrogen Use Efficiency in Grain Sorghum (Sorghum Bicolor (L.) Moench) written by H. R. Lafitte and published by . This book was released on 1982 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Field Study of the Heat and Drought Tolerance of Grain Sorghum (Sorghum Bicolor (L.) Moench) as an Approach to Genetic Improvement by : Vincent Babatunde Ogunlela
Download or read book A Field Study of the Heat and Drought Tolerance of Grain Sorghum (Sorghum Bicolor (L.) Moench) as an Approach to Genetic Improvement written by Vincent Babatunde Ogunlela and published by . This book was released on 1974 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Characterization of Grain Sorghum for Physiological and Yield Traits Associated with Drought Tolerance by :
Download or read book Characterization of Grain Sorghum for Physiological and Yield Traits Associated with Drought Tolerance written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Grain sorghum (Sorghum bicolor L. Moench) is the fourth most important cereal crop grown throughout the semi-arid regions of the world. It is a staple food crop in Africa and Asia, while it is an important feed crop in the United States (US). More recently it is increasingly becoming important as a potential bioenergy feedstock crop around the world. The state of Kansas is the largest producer of grain sorghum in the US and contributes 40% of the total production. Drought is one of the major environmental factors limiting sorghum production in the semi-arid regions of the US, Asia and Africa. It is estimated that global crop losses due to drought stress exceed $10 billion annually. In crop production, drought stress can be classified into pre- or post-flowering. Even though the world collections of sorghum contain over 35,000 accessions, the genetic base currently used in breeding programs is very small (about 3%). Thus, it is important to identify diverse breeding lines for crop improvement. The diversity (association) panel consisting of 300 sorghum lines from all over the world was assembled for trait evaluation and association mapping. In this research these lines were grouped into the five major races (Figure 1) and 10 intermediate races of sorghum. The objectives of the research are to: (i) quantify the performance of the diversity panel under field conditions in Kansas, (ii) identify critical physiological traits affected by drought at both pre- and post-flowering stages of sorghum development, (iii) identify the most sensitive stage to drought stress during the reproductive phase of sorghum development and, (iv) test the feasibility of using a chlorophyll fluorescence assay (CVA) as a tool for identifying stay-green lines in grain sorghum during early stages of crop development. Field experiments were conducted in 2006 and 2007 in two locations in Kansas (Manhattan and Hays) under rain fed and irrigated conditions for the association panel. Objectives (iii) and (iv) were achieved with controlled environment experiments conducted in the greenhouse at the agronomy department, Kansas State University in 2006 and 2007. Results showed that there was large genetic variability among and within different races in the diversity panel for growth, physiological traits and yield components. Some genotypes showed yield stability across the different environments that were investigated. Drought significantly decreased seed number and harvest index across genotypes and races. In grain sorghum the period prior to flowering (panicle initiation) was the most sensitive stage to drought stress, in terms of its effect on seed-set, during reproductive development. A cell viability assay showed that there were significant differences in the loss of cell viability between leaf sample of stay green and non-stay green genotypes when leaf samples are collected in the morning and subjected to high respiratory demand. Therefore the chlorophyll fluorescence assay has potential as a tool for stay green trait screening at early stages of growth in grain sorghum.
Book Synopsis Physiological and Agronomic Responses of a Grain Sorghum (Sorghum Bicolor (L.) Moench) Hybrid to Elevated Night Temperatures by : V. B. Ogunlela
Download or read book Physiological and Agronomic Responses of a Grain Sorghum (Sorghum Bicolor (L.) Moench) Hybrid to Elevated Night Temperatures written by V. B. Ogunlela and published by . This book was released on 1979 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two greenhouse and three field experiment were conducted to study the effects of elevated night temperatures on the yield and growth of a grain sorghum (Sorghum bicolor (L.) Moench) hybrid. The genotype used in these investigations was the 'RS 671' (Redlan x Tx 415), an open-pedigree temperate-adapted grain sorghum. The phenological growth phase during which temperature treatments were imposed was the panicle development (GS-2) period. Experiment I, II (greenhouse) and III (field) were designed to determine the response of grain sorghum to two elevated night temperatures and the growth stage during GS-2 period when the plant is most sensitive to elevated temperatures. Experiment IV and V (field) were conducted with the same objectives as those for Experiment I, II and III and also to determine the effects of artificial preconditioning on the plant's response to elevated night temperatures. Experiments I - Plants were exposed to 26.5 and 32 C night temperatures at 4-day durations commencing from florest differentiation through bloom. The two elevated night temperatures caused significant reduction in grain yield and yield components except seed size that was enhanced (12%) by the 32 C treatment. Approximately 19%, 21%, 24% and 20% reductions in panicle dry weight, grain yield per plant, number of seeds per panicle and grams of grain/GS-3 day/plant, respectively, were caused by the 32 C treatment. The 26,5 C treatment also caused reduction in these variables but to much lesser degrees. Numbers of days to (...).
Book Synopsis Research in the Physiology of Yield and Management of Sorghum in Relation to Genetic Improvement by :
Download or read book Research in the Physiology of Yield and Management of Sorghum in Relation to Genetic Improvement written by and published by . This book was released on 1972 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Role of Zinc and Copper Salts on Drought Resistance of Sorghum Sorghum Bicolor (L.) Moench by : M. Mamatha Devi
Download or read book Role of Zinc and Copper Salts on Drought Resistance of Sorghum Sorghum Bicolor (L.) Moench written by M. Mamatha Devi and published by . This book was released on 1992 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Crop Reactions To Water And Temperature Stresses In Humid, Temperate Climates by : Paul J Kramer
Download or read book Crop Reactions To Water And Temperature Stresses In Humid, Temperate Climates written by Paul J Kramer and published by CRC Press. This book was released on 2019-09-10 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: First published 1983. Aimed at improving agricultural production by providing a better under· standing of the interaction between crops and the environment, this book presents the latest research findings on the effects of water and temperature stresses on plants in humid temperate regions. It also covers management practices and breeding programs that may reduce crop sensitivity to the vagaries of weather.
Book Synopsis Climate Change and Legumes by : Mohammad Zabed Hossain
Download or read book Climate Change and Legumes written by Mohammad Zabed Hossain and published by CRC Press. This book was released on 2023-05-23 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: Global climate change has created unprecedented challenges for human civilization due to its widespread adverse consequences, including a reduction in crop yield and threatening food security across the globe. Among the crop plants, legumes have great potential for ameliorating global warming since they can reduce carbon emissions by lowering reliance on the application of chemical fertilizers, by increasing nitrification and carbon sequestration in soil, and by providing protein-rich diets to both humans and livestock. This book identifies the extent of climate-induced stresses on legume plants and focuses on achieving food security through sustainable agricultural practices. This book compiles recent research findings and reviews on climate-related problems, the potential of legumes in ameliorating the impacts of climate change, as well as better management of agricultural land and practices for achieving environmental sustainability and food security. This book will serve as guidelines for scientists, agricultural practitioners, and policymakers working to achieve food security and better management of climate-induced stresses in agricultural interventions. It will also be useful as a reference book for researchers and students of both graduate and postgraduate levels. Furthermore, this book will provide enhanced knowledge about the mechanisms of yield and stress tolerance of legumes as well as developing climate-smart crops and improving cropping systems for a sustainable environment and food security. Features of the book Reviews trends of global climate change and its consequences for food security across the continents Identifies the challenges and scopes of cultivating legumes in achieving food security in the context of global climate change Focuses on the improvements of legume production through conservation approaches in agricultural practices and modern techniques, including omics-based breeding, biotechnology, genetic engineering, and rhizobium technology Discusses the sustainable amelioration options for soils affected by climate-induced stresses Cites examples of applications of rhizobium technologies in reducing greenhouse gas emission Describes pathways associated with yield, resistance, and tolerance of legumes to climate-induced stresses
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