Evaluation of physiological and morphological traits conferring drought tolerance in cowpea

Abstract: 
A field study was carried at Gwebi VTC to determine relationships among the morpho-physiological traits associated with drought tolerance in cowpea. Fifteen genotypes were planted in RCBD with three replications under two moisture environments, unstressed (US) and water stressed (WS). Thus, plants with reduced stomatal conductance and high chlorophyll absorbance should be selected in order to develop cowpea varieties tolerant to drought. Direct selection for number of pods per plant, harvest index and 100 seed weight would be effective under water stressed conditions since the positive correlationship was mainly due to direct effects.
Une étude sur terrain a été réalisée à Gwebi VTC pour déterminer les relations entre les traits morpho-physiologiques associés à la tolérance à la sécheresse sur la variété de haricot noir. Quinze génotypes ont été plantés en blocs RCBD avec trois répétitions sous deux environnements d’humidité, en nonstress(US) et en stress hydrique (WS). Ainsi, les plantes à la conductance stomatique réduite et à haute densité de chlorophylle devraient être sélectionnées en vue de développer ces variétés de haricot tolérant la sécheresse. La sélection directe pour le nombre de gousses par plante, indice de récolte et poids de 100 graines serait efficace sous des conditions stressées de l’eau depuis que la correlation positive est principalement due à des effets directs.
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Date of publication: 
2010
Country: 
Region Focus: 
East Africa
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Collection: 
RUFORUM Conferences and Workshops
Licence conditions: 
Open Access
Access restriction: 
Form: 
Printed resource
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Extent: 
441-445
Notes: 

"The 2010 RUFORUM Biennial Conference was the second in the series. The main objective of the Biennial conferences is to provide a platform for agricultural research for development stakeholders in Africa and beyond to actively exchange findings and experiences, while at the same time learning lessons towards improving performance of the agricultural sector and ultimately people’s livelihoods. The biennial conference is RUFORUM’s most comprehensive meeting for the diversity of stakeholers in agriculture. It is especially dedicated to graduate students and their supervisors, grantees in RUFORUM member universities and alumni. It is a platform for peer review, quality control, mentorship, networking and shared learning. This record contains an extended abstract accepted under the theme plant breeding".