![Potential for Drought Tolerance in Cowpea [vigna Unguiculata (L) Walp]. PDF](https://books.google.com/books/content/images/frontcover/ie6_XwAACAAJ?fife=w150-h200)
Author: M. MereenaPublisher:
ISBN:
Category :
Languages : en
Pages : 102
Book Description
Potential for Drought Tolerance in Cowpea [vigna Unguiculata (L) Walp].
![Potential for Drought Tolerance in Cowpea [vigna Unguiculata (L) Walp]. PDF](https://books.google.com/books/content/images/frontcover/ie6_XwAACAAJ?fife=w80-h100)
Author: M. MereenaExploring the Genetic Potential of Locally Adapted Germplasm for Drought Tolerance
Author: Influence of Genotype on Drought Resistance and Nitrogen Fixation in Cowpea (Vigna Unguiculata (L.) Walp.)
Author: David Wayne WalkerPublisher:
ISBN:
Category : Cowpea
Languages : en
Pages : 326
Book Description
Evaluation of Diverse Cowpea (Vigna Unguiculata [L.] Walp.) Germplasm for Field Performance and Drought Tolerance
![Evaluation of Diverse Cowpea (Vigna Unguiculata [L.] Walp.) Germplasm for Field Performance and Drought Tolerance PDF](https://books.google.com/books/content/images/frontcover/d9bUuQEACAAJ?fife=w80-h100)
Author: K. D NkoanaPhysiology and Genetics of Drought Tolerance in Cowpea and Winter Wheat
Author: David Adrian VerbreePublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
In the wake of rising temperatures, erratic rainfall, and declining ground water table, breeding for drought tolerance in food crops has become a top priority throughout the world. Phenotyping a large population of breeding lines for drought tolerance is time-consuming and often unreliable due to multiple possible mechanisms involved. In cowpea (Vigna unguiculata L. Walp), a box-screening method has been used to partition the confounding effects that shoot and root traits have on drought tolerance by restricting root growth and providing a homogeneous soil moisture environment across genotypes. Nonetheless, multiple mechanisms of shoot drought tolerance have been reported which further complicate phenotyping. In winter wheat (Triticum aestivum L.), canopy temperature depression (CTD) has been proposed as a good indicator of drought tolerance. The recent development of low-cost thermal imaging devices could enable high-throughput phenotyping of canopy temperature. While CTD can be an indicator of overall plant water status, it can be confounded by high stomatal resistance, which is another seemingly contradictory mechanism of drought tolerance. The objectives of this study were to explore the physiological basis and genetics of the two mechanisms of shoot drought tolerance previously reported in cowpea and to develop and evaluate a method of high-throughput phenotyping of drought tolerance in winter wheat using thermal imaging. In cowpea, a legume well known for its tight stomatal control, no differences in gas exchange between drought tolerant and susceptible genotypes were observed. A unifoliate stay-green trait was discovered that segregates as a single recessive gene. However, it did not correlate with trifoliate necrosis or overall drought tolerance. In winter wheat, CTD did not always correlate with yield under rainfed conditions. One drought-tolerant cultivar, in particular, had the hottest canopy temperature, possibly because it was able to conserve moisture by closing its stomata whereas another closely related drought-tolerant cultivar had the coolest canopy temperature. Therefore, it appears that no single method of phenotyping for drought tolerance can be broadly applied across all genotypes of a given species due to possible contrasting mechanisms of drought-tolerance and environmental differences. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/152439
Drought Adaptation of Cowpea (Vigna Unguiculata (L.) Walp.)
Author: Kenneth Joseph TurkPublisher:
ISBN:
Category : Cowpea
Languages : en
Pages : 250
Book Description
Inheritance of Drought Resistance in Cowpea [Vigna Unguiculata (L.) Walp.]
![Inheritance of Drought Resistance in Cowpea [Vigna Unguiculata (L.) Walp.] PDF](https://books.google.com/books/content/images/frontcover/kv5fNwAACAAJ?fife=w80-h100)
Author: Mohammad ChozinPublisher:
ISBN:
Category : Cowpea
Languages : en
Pages : 156
Book Description
Breeding Cowpea (Vigna Unguiculata (L.) Walp.) for Improved Drought Tolerance in Mozambique
Author: Rogério Marcos ChiulelePublisher:
ISBN:
Category : Cowpea
Languages : en
Pages : 145
Book Description
Yield Stability in Cowpea as Influenced by Five Drought Resistance Mechanisms
Author: Steven Mark BarineauPublisher:
ISBN:
Category : Cowpea
Languages : en
Pages : 274
Book Description
Quantitative Genetics of Seedling Drought Tolerance and Resistance to Drought-enhanced Macrophomina Phaseolina Infection in Cowpea (Vigna Unguiculata L. Walp)
Author: Wellington MucheroPublisher:
ISBN:
Category : Cowpea
Languages : en
Pages : 398
Book Description