Performances morpho-physiologiques et agronomiques du niébé [Vigna unguiculata (L.) Walpers] en conditions du déficit hydrique

Abdou, H and Falalou, H and Yakoubou, B (2018) Performances morpho-physiologiques et agronomiques du niébé [Vigna unguiculata (L.) Walpers] en conditions du déficit hydrique. Journal of Applied Biosciences, 128. pp. 12874-12882. ISSN 1997-5902

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Abstract

Objective: the aim is to investigate the intermittent drought stress and the season effects on agro-physiological parameters by assessing its impact on the leaf area index (LAI), leaf area, leaf dry weight and grain yield. Methods and Results: Eighteen cowpea genotypes were tested in the field during cold and hot seasons. Two water treatments, well-watered (WW) and intermittent drought (WS), were imposed at vegetative and reproductive stages during three experiments. Our findings showed that the flowering date delayed up to 5 days in the cold season under water deficit. The LAI, leaf area and leaf dry weight were high under WW conditions. Under DH, grain yield decrease significantly (P <0.001) up to 88 and 67% in the cold and hot seasons respectively. KVX-61-1, IT96D-610 and IT98K-1111-1 showed the highest grain yield under both seasons and r both water treatments. Conclusion and application: The identification of early and/or intermittent drought tolerant varieties that may improve cowpea cultivation at the vegetative and / or reproductive stages could lead to increase grain yield and production of cowpea in Niger.

Item Type:	Article
Divisions:	Research Program : West & Central Africa
CRP:	UNSPECIFIED
Uncontrolled Keywords:	Water deficit, cowpea, grain yield, physiology, biomass
Subjects:	Others > Cowpea Others > Niger
Depositing User:	Mr Ramesh K
Date Deposited:	12 Mar 2019 08:46
Last Modified:	12 Mar 2019 09:02
URI:	http://oar.icrisat.org/id/eprint/11084
Official URL:	https://dx.doi.org/10.4314/jab.v128i1.1
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	This article is written in French language
Links:	Google Scholar

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