论文部分内容阅读
为了阐明不同水稻品种产量稳定性的差异,以黄华占系谱品种及亲本为材料,连续两年四季对17个产量相关性状进行考查,应用加性主效应和乘积交互作用(AMMI)模型进行稳定性分析。结果表明,在四种环境下水稻产量发生较大变化,变幅为2.21%~19.45%,不同品种间产量的稳定性存在较大差异,其中产量稳定性最好的是丰矮占,最差的是双桂36。各品种的产量相关性状稳定性差异较大,粒宽和剑叶宽稳定性最好,稳定性系数均值分别为0.043和0.049;产量稳定性居中,稳定性系数为0.178;每穗总粒数稳定性最差,稳定性系数为0.935。系谱品种稳定性分析表明,长丝占的引入使得系谱品种产量稳定性大幅提升。随着育种目标的变化,稳定性下降,茉莉丝苗的引入又使品种稳定性再次提高。筛选出的优良种质,可用于培育高稳定性产量性状的水稻新品种,促进水稻高产稳产育种。
In order to elucidate the differences in yield stability of different rice cultivars, 17 yield-related traits were tested for two consecutive seasons, using the Huang Hua zhang pedigree and their parents as materials, and the stability analysis was carried out using the additive main effect and product interaction (AMMI) model . The results showed that the yield of rice varied greatly from 2.21% to 19.45% under the four environments, and there was a big difference in the yield stability among different varieties. Among them, the best yield stability was Feng dwarf, the worst Is the double Gui 36. The stability of yield-related traits varied greatly among the cultivars, and the grain width and the width of the flag leaf were the best. The average stability coefficients were 0.043 and 0.049, respectively. The yield stability was moderate with the stability coefficient of 0.178. The total grains per panicle was stable The worst, with a stability factor of 0.935. The analysis of pedigree species stability showed that the introduction of filament accounted for a substantial increase in the yield stability of pedigree species. With the change of breeding target, the stability is decreased, and the introduction of jasmine silk seedling makes the stability of varieties increase again. Selected good germplasm, can be used to cultivate high-yielding traits of new rice varieties and promote high-yielding rice breeding.