Comparison of selection indices for drought tolerance in common beans for the dry environments of Tanzania

This study assessed yield performance of common bean genotypes under different levels of drought stress (waster stress periods). Subsequently, drought susceptibility index (DSI), sensitivity index (SI) and drought intensity index (DII) were derived from the grain yield data under the three water stress treatments. DSI was found to be the most reliable index to identify drought tolerant genotypes, while DII and SI were better suited to identifying intensity of drought at a location and grouping of drought tolerant genotypes, respectively.
Cette étude a évalué la performance du rendement des génotypes communs de haricot sous différents niveaux de stress à la sécheresse (périodes de stress hydrique). Par la suite, l’indice de susceptibilité à la sécheresse (DSI), l’indice de sensibilité (SI) et l’indice d’intensité de sécheresse (DII) ont été calculés à partir des données de rendement des grains dans les trois traitements de stress hydrique. DSI a été trouvé comme l’indice le plus fiable pour identifier des génotypes résistants à la sécheresse, pendant que DII et SI étaient convenables pour identifier l’intensité de la sécheresse en un lieu et le regroupement des génotypes résistants à la sécheresse, respectivement.
Date of publication: 
Region Focus: 
East Africa
RUFORUM Conferences and Workshops
Licence conditions: 
Open Access
Access restriction: 
Printed resource

About the RUFORUM 2010 Biennal Conference
"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 stakeholders 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 of Plant Breeding"