Comparative performance of ten genotypes each of two Brassica species ( B . napus L. and B. juncea (L.) Czern. & Coss.) was assessed in a field experiment conducted under semi-arid environmental conditions. Genotypes of both Brassica species showed great variability for different morphological characteristics like plant height, primary branches per plant, days to 50% flowering and maturity as well as for yield and yield characteristics. Brassica juncea produced significantly greater yield and yield parameters than B . napus genotypes. Seed oil content was higher in Brassica napus while the levels of erucic acid and glucosinolates were lower in B. napus than in B. juncea . The results suggested that genotypes RBN-03255 and RBN-03035 of B. napus with higher oil content could be recommended for cultivation for commercial use. Moreover, the great variability in oil glucosinolates and erucic acid content in genotypes of B . napus showed their potential for utilization in breeding programs at intra- and inter-specific level.
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Iqbal et al. (2008) studied this question.
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