籼粳杂交后代性状与产量的灰色关联度分析

GRAY CORRELATION ANALYSIS OF DIFFERENT TRAITS IN THE PROGENIES OF SUB-SPECIFIC CROSSES BETWEEN JAPONICA AND INDICA RICE AND THEIR YIELD

采用灰色关联度系统理论 ,对云南农业大学选育的籼粳亚种间杂交后代 12个常规籼稻品种和稳定品系的 8个主要性状与产量的关系进行了综合分析评判 ,结果表明 :应用灰色关联排序结果与实际表现和应用一致 ;高产品种应表现植株高度适中、有效穗多、穗部籽粒着重致密、结实好。

Based on the theory of gray correlation system, a comprehensive analysis and appraisal were made of the relationship between the yield and 8 agronomic characters in 12 indica rice varieties and stable lines developed by Yunnan Agricultural University through inter-subspecific hybridization of indica rice with japonica rice. The results of the analysis were consistent with the actual performance of the varieties. High-yielding varieties were characterized by medium plant height, large number of effective spikes, compact arrangement of grains on the spike, good seed-setting and high yield per plant.