Working Document Series Open Access 2010 RUF-34497

Combining ability analysis of quality protein maize (QPM) and non-PM inbred lines for kernel quality and some agronomic characteristics

D. LunguJ. MacRobertC. Mutimaamba

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Abstract

156 words

The biggest population in Zimbabwe depend on maize as a source of carbohydrates, yet it is deficient in protein and therefore makes the population prone to protein malnutrition. Quality Protein Maize (QPM) has double the amount of lysine and tryptophanand therefore desirable suitable to combat possible protein malnutrition. The Zimbabwe maize research programme is currently using QPM inbred lines whose combining ability for grain quality and agronomic traits has not been previously tested and validated. In this study, combining ability analysis was conducted to identify appropriate QPM donor inbred lines for use in the development of new QPM inbred lines and the conversion of non-QPM open pollinated varieties (OPVs) and inbred lines to QPM. From the study, the inbred lines CZL082 and CML511 are recommended for use as donors in the development of new QPM inbred lines and the conversion of non-QPM inbred lines and OPVs to QPM by the national maize research programme in Zimbabwe.

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