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International Journal of Plant Breeding and Genetics
  Year: 2013 | Volume: 7 | Issue: 1 | Page No.: 47-56
DOI: 10.3923/ijpbg.2013.47.56
Field Evaluation of Cowpea Genotypes for Drought Tolerance and Striga Resistance in the Dry Savanna of the North-West Nigeria
M.F. Ishiyaku and H. Aliyu

Drought and Striga are some of the key constraints to cowpea production. These are further aggravated by the ever changing global climate and the concomitant effects such as erratic rainfall pattern. This research was conducted to identify lines that are tolerant to drought and resistant to Striga in one of the major cowpea belt in West Africa. Twenty two genotypes of cowpea obtained from the Cowpea Breeding Programme of the Institute for Agricultural Research (IAR), Ahmadu Bello University Zaria, Nigeria were evaluated in 2 different dates; beginning of the rainy season representing optimum moisture (7th August) and the end of the rainy season representing drought conditions (7th September) for two years (2008 and 2009). IAR-07-1050 was found to be resistant to Striga although susceptible to drought (DRI = -0.32). Others genotypes were infested by Striga. Two genotypes, IT98K-412-13 and IT93K-452-1 with DRI = 1.79 and 1.88, respectively were drought tolerant genotypes. IT99K-529-1, Biu Local, Kanannado, IT99K-216-24-2, Sa Babba Sata, IT96D-610 and IT97K-819-118 showed some level of tolerance as indicated by several selection indices including DRI. These indices were very suitable for the identification of drought tolerance in cowpea. DRI and DSI are particularly useful in the classification of genotypes in terms of drought tolerance irrespective of their yield potential. This is highly desirable for the identification of gene sources for further improvement of cowpea for drought tolerance or in combination with other traits.
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17 June, 2019
Salim maigari:
please indeed more about effect of drought to cowpea plant

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