水稻品种外观品质性状稳定性分析

基于AMMI模型，研究了18个水稻品种外观品质性状与环境的交互作用，并对参试品种的品质性状稳定性进行了分析。以6个外观品质性状表型值及相应的品种稳定性参数为指标，进行系统聚类分析，据此对供试品种外观品质性状进行了评价。结果表明，品种与环境互作效应在1%水平显著，外观品质性状的稳定性随品种而变化较大；随水稻品

Stability Analysis for Appearance Qualities of Rice Cultivar

The performance of cultivar stabilities in appearance qualities, which composed of grain length (GL), grain width (GW), ratio of grain length to width (RLW), ratio of grains with chalkiness (RC), size of chalkiness per grain (SC) and degree of chalkiness (DC), were analyzed by additive main effects and multiplicative interaction (AMMI) model in 18 rice cultivars. The results showed that the genotype by environment interaction was significant at 1% level and the performance of appearance qualities varied with the cultivar. The cultivar stabilities of the rice appearance qualities were decreased with the increase of the corresponding traits. The indica hybrid Shanyou 63 showed the best cultivar stability in all the six appearance qualities, while the conventional cultivars 93272,Nanjing 16, W002 and Suxiangjing 2 exhibited lower RC and SC and higher cultivar stabilities in the two traits. The cultivars with high appearance qualities and stability could be used in elite rice breeding.