![Physiological Characteristics of Sorghums [Sorghum Bicolor (L.) Moench] Related to Drought Resistance PDF](https://books.google.com/books/content/images/frontcover/n1i3tgAACAAJ?fife=w150-h200)
Author: Sidy B. CoulibalyPublisher:
ISBN:
Category :
Languages : en
Pages : 316
Book Description
Physiological Characteristics of Sorghums [Sorghum Bicolor (L.) Moench] Related to Drought Resistance
![Physiological Characteristics of Sorghums [Sorghum Bicolor (L.) Moench] Related to Drought Resistance PDF](https://books.google.com/books/content/images/frontcover/n1i3tgAACAAJ?fife=w80-h100)
Author: Sidy B. CoulibalyPhysiological Aspects of Drought Resistance in Sorghum (Sorghum Bicolor L. Moench) Hybrids which Differ in Leaf Retention During Grain-fill
Author: Brenda Lynn McIntyrePublisher:
ISBN:
Category : Plants
Languages : en
Pages : 174
Book Description
Characterization of Grain Sorghum for Physiological and Yield Traits Associated with Drought Tolerance
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
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.
Physiological Investigations of Drought and Heat Resistance in Sorghum (Sorghum Bicolor (L.) Moench
Author: J. G. OdraStudy of Traits for Drought Resistance in Sorghum Bicolor (L.) Moench
Author: Jorge Manuel Santamaria-FernandezPublisher:
ISBN:
Category : Osmoregulation
Languages : en
Pages : 168
Book Description
Physiological Investigations of Drought and Heat Resistance in Sorghum (Sorghum Bicolor (L.) Moench)
Author: James Gala OdraMorpho-physiological Traits of Sorghum (Sorghum Bicolor (l.) Moench) Lines in Relation to Water Stress
Author: C.L.Narasimha RaoRole of Zinc and Copper Salts on Drought Resistance of Sorghum Sorghum Bicolor (L.) Moench
Author: M. Mamatha DeviGenotypic Variability for Agronomic and Physiological Traits in Sorghum (Sorghum Bicolor [L.] Moench) with Optimum and Suboptimum Water Levels
![Genotypic Variability for Agronomic and Physiological Traits in Sorghum (Sorghum Bicolor [L.] Moench) with Optimum and Suboptimum Water Levels PDF](https://books.google.com/books/content/images/frontcover/zMAeOAAACAAJ?fife=w80-h100)
Author: Abdalla I. Sheikh-MohamedPublisher:
ISBN:
Category : Plants
Languages : en
Pages : 106
Book Description
Physiologic and Morphologic Investigations of Grain Sorghum [Sorghum Bicolor (L.) Moench]
![Physiologic and Morphologic Investigations of Grain Sorghum [Sorghum Bicolor (L.) Moench] PDF](https://books.google.com/books/content/images/frontcover/QK3EngEACAAJ?fife=w80-h100)
Author: Joe Harry HultquistPublisher:
ISBN:
Category : Sorghum
Languages : en
Pages : 140
Book Description