Efficiency of molecular markers to select for Striga gesnerioides resistance in cowpca [Vigna unguiculata (L.)Walp]

Omoigui, L O and Kamara, A Y and Timko, M P and Ajeigbe, H A and Ayeni, D F and Motagi, B N (2015) Efficiency of molecular markers to select for Striga gesnerioides resistance in cowpca [Vigna unguiculata (L.)Walp]. In: 1st Annual Conference Proceedings of the African Society of Agronomy, Crop, Soil and Environmental Sciences (ASACSES), November 02-05, 2015, Abuja, Nigeria.

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Abstract

Striga gesnerioides (Willd) Vatke is a major biological constraint to cowpea productivity in the dl) savannas of sub-Saharan Africa. Over the last two decades, the use of molecular markers in crop improvemem has gained prominence owing to its ability to sh0l1en the breeding cycle. The available molecular markel techniques are being improved upon and continuously tested for higher preci sion, shOl1er duration of application and better cost effectiveness. [n the present study, a total of four molecular markers developed for selecting Slriga resistant cowpea were used to genotype F2 population derived from a cross between Borno Brown and [T97K-499-35 to identify markers more close ly linked to S. gesnerioides resistance. SSRI and 2 were found 10 be tight ly linked to Striga gesnerioides with a genetic distance of 1 and 2cM.The selection efficiency of SS~I and SSR-2 were 99 and 98 % and was better than that of C42-B 85.5%.

Item Type: Conference or Workshop Item (Paper)
Divisions: RP-Grain Legumes
CRP: CGIAR Research Program on Grain Legumes
Uncontrolled Keywords: Striga gesnerioides, Resistance, Molecular markers, Cowpea, Sub-Saharan Africa
Subjects: Others > Food Legumes
Depositing User: Mr Ramesh K
Date Deposited: 05 Jan 2016 06:27
Last Modified: 05 Sep 2017 09:18
URI: http://oar.icrisat.org/id/eprint/9225
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