Haryana Agricultural University, 12 5004, Hisar, India.
Theor Appl Genet. 1994 Apr;88(1):28-9. doi: 10.1007/BF00222389.
Among the various available sources of male-sterile cytoplasm in pearl millet [Pennisetum glaucum (L.) R.Br.], the A1 source has been exploited the most for the breeding of commercial F1 hybrids. The effect of this source on the combining ability (CA) for smut severity was studied since it is the CA that determines the performance of hybrids. The effect was estimated by comparing the CA estimates of 5 pairs of lines and 35 pairs of crosses with and without A1 cytoplasm. The cytoplasm showed either a significantly desirable or at least no adverse effect on the CA of 4 out of the 5 line pairs and 56 out of 70 pairs of comparison of crosses in two environments. The differential effect of cytoplasm in some pairs might be due to its interaction with nuclear genes. These results further substantiated that the A1 cytoplasm is not linked with increased smut severity in pearl millet hybrids.
在珍珠粟（Pennisetum glaucum (L.) R.Br.）中，存在多种可用的雄性不育细胞质资源，其中 A1 资源被广泛用于商业 F1 杂种的培育。由于雄性不育细胞质的组合能力（CA）决定了杂种的表现，因此研究了该资源对黑粉病严重程度的 CA 的影响。通过比较 5 对品系和 35 对带有和不带有 A1 细胞质的杂交组合的 CA 估计值来评估影响。在两个环境中，A1 细胞质对 5 对品系中的 4 对和 70 对杂交组合中的 56 对的 CA 表现出了显著的有利影响或至少没有不利影响。在某些组合中，细胞质的不同影响可能是由于其与核基因的相互作用。这些结果进一步证实，A1 细胞质与珍珠粟杂种中黑粉病严重程度的增加无关。
