Genetic diversity among yellow maize with pro-vitamin A content

Mercy Oluremi Olowolafe, Oluwasayo Kehinde, Akinyosoye Tayo
Journal of Agriculture and Environment for International Development-JAEID   unpublished
An improvement in the concentration of vitamin A in adapted yellow maize varieties grown in Africa may have a positive impact on the dietary intakes in regions where maize is a staple food. The present study was designed to identify divergent parents for developing new pro-vitamin A enriched maize lines. Ten Simple Sequence Repeats (SSR) markers were used to generate DNA profiles from thirteen yellow maize lines commonly grown across south western Nigeria from Institute of Agricultural Research
more » ... and Training (IAR&T) and three high pro-vitamin A lines from International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria. All the ten SSR markers showed 100% polymorphism with polymorphic information content that ranged from 0.28 to 0.71 on an average of 0.50. Genetic similarity coefficients among the 16 maize lines varied from 0.28 to 0.92 GS with an average of 0.63 GS. Four well defined groups were identified at 0.65 GS with an IITA line, PVA8, solely, formed a group. The study identified PVA8 and its most three distant relatives as potential divergent parents that could serve as important genetic resources for broadening the genetic base of the presently assessed maize collections and also to develop new maize lines with higher level of pro-vitamin A content.