Heterotic grouping of provitamin A-enriched maize inbred lines for increased provitamin A content in hybrids.

ABSTRACT:

Background

The establishment of heterotic groups of inbred lines is crucial for hybrid maize breeding programs. Currently, there is no information on the heterotic patterns of the Provitamin A (PVA) inbred lines developed in the maize improvement program of the International Institute of Tropical Agriculture (IITA) to form productive PVA enriched hybrids for areas affected by vitamin A deficiency. This study assessed the feasibility of classifying PVA-enriched inbred lines into heterotic groups based on PVA content without compromising grain yield in hybrids. Sixty PVA inbred lines were crossed to two testers representing two existing heterotic groups. The resulting 120 testcrosses hybrids were evaluated for two years at four locations in Nigeria.

Results

The two testers eff

SUBMITTER: Maazou AS 

PROVIDER: S-EPMC10537512 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature