Assessment of groundnut cultivars for end-of-season drought tolerance in a Sahelian environment

Ndunguru, B J and Ntare, B R and Williams, J H and Greenberg, D C (1995) Assessment of groundnut cultivars for end-of-season drought tolerance in a Sahelian environment. Journal of Agricultural Science, 125 (1). pp. 79-85. ISSN 1469-5146

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Abstract

A 2–year study (1990 and 1991) was conducted at the ICRISAT (International Crops Research Institute for the Semi-Arid Tropics) Sahelian Centre, near Niamey, Niger, to select groundnut cultivars tolerant to drought and to examine selection techniques. Thirty-six cultivars known to vary in yield potential were grown under rainfed and irrigated conditions. Crop growth rate (C) and partitioning co-efficient (p) were estimated from phenological and final harvest data. The correlation between years was greater for partitioning than for pod yield (implying a higher heritability for p than for yield). Tolerance as determined by a drought susceptibility index for pod yield (SY), crop growth rate (Sc) and partitioning (Sp) to reproductive sinks showed thirteen cultivars as drought tolerant for either C or p or for both. The Sahelian cultivars 796, 55–437 and TS 32–1 were the most consistent for drought tolerance. Partitioning was the most important yield component affecting yield variation among cultivars.

Item Type:	Article
Divisions:	UNSPECIFIED
CRP:	UNSPECIFIED
Subjects:	Mandate crops > Groundnut
Depositing User:	Mr Sanat Kumar Behera
Date Deposited:	21 Nov 2012 06:00
Last Modified:	04 Jan 2017 03:25
URI:	http://oar.icrisat.org/id/eprint/6227
Official URL:	http://dx.doi.org/10.1017/S0021859600074529
Projects:	SADC/ICRISAT Groundnut and ICRISAT Regional Pigeonpea Project
Funders:	UNSPECIFIED
Acknowledgement:	UNSPECIFIED
Links:	Google Scholar

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