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两个籼粳稻杂交F2群体(F2-A:晚轮422/沈农265;F2-B:泸恢99/沈农265)分别在辽宁和四川种植,研究生态环境对亚种属性及其与株型性状相互关系的影响。结果表明,不同生态环境下F2代植株籼粳属性均呈接近正态的连续变异,相对于四川,辽宁呈现明显的偏籼分布,生态环境对程氏指数六性状的影响并不完全一致。生态环境对株型特性也有较明显的影响,从四川到辽宁,株高和穗弯曲度显著提高,而穗长、剑叶长、剑叶宽及剑叶张角则表现降低趋势。不同地区株高的类型间差异没有明显规律性,剑叶长表现为籼型显著大于其他类型的趋势,剑叶张角地区和类型间大多无显著差异,不同地区剑叶宽的类型间差异因组合而异。总之不同地区从籼型到粳型,均有穗长递减而穗弯曲度递增的趋势。籼粳稻杂交F2代植株个体籼粳属性与株型性状表现出一定的相关性,但相关的方向和程度在不同地区和组合间不完全一致。
Two crosses of indica and japonica F2 population (F2-A: Wanlun 422 / Shennong 265; F2-B: Luhui 99 / Shennong 265) were planted in Liaoning and Sichuan Province, respectively. Type traits. The results showed that the indica and japonica properties of F2 plants in the different ecological environments showed a nearly normal continuous variation, showing a significant distribution of indica rice relative to Sichuan and Liaoning, and the ecological environment did not exactly the same. The ecological environment also had obvious effects on plant type characteristics. From Sichuan to Liaoning, plant height and spike curvature increased significantly, while spike length, flag leaf length, flag leaf width and flag leaf angle decreased. There was no obvious regularity among the types of plant height in different regions. The length of flag leaf was significantly higher than that of other types. The differences between flag leaf angle regions and types were not significant. Different combinations. In short, the indica-japonica varieties in different regions all had decreasing spike length and increasing ear curvature. Indica-Japonica and indica-japonica traits in F2 generation of indica and japonica hybrids showed some correlations, but the related directions and degrees were not completely consistent in different regions and combinations.