Inheritance of very high glucosinolate content in Ethiopian mustard seeds

摘要

Seed meal amendments rich in glucosinolates are of interest for soil pest and disease control. The Ethiopian mustard (Brassica carinata A. Braun) line N2-6215, with very high levels of seed glucosinolates (160 omol/g), was developed from the line C-101 (116 omol /g) following mutagenesis. The objective of this research was to study the inheritance of very high seed glucosinolate content. Plants of N2-6215 were reciprocally crossed with plants of the line C-101. The F, F, and BCF plant generations were evaluated in two environments and seeds from individual plants were analysed for total glucosinolate content. The very high glucosinolate content in N2-6215 seeds was largely subject to maternal control. No cytoplasmic effects were detected. The trait was found to be oligogenic and determined by at least two or three genes. The estimates of broad-sense heritability were 0.45 and 0.58 in both environments, whereas the estimates of narrow-sense heritability were 0.35 and 0.50. The moderate heritability and oligogenic control of the trait suggest the feasibility of breeding for increased seed glucosinolate content in Ethiopian mustard.