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以黑龙江八一农垦大学水稻研究中心保存的163个寒地早粳稻品种(系)为试材进行相关和通径分析,研究茎、叶、穗株型指标与稻米品质的关系。结果表明,穗下节间长和倒3节间粗分别与稻米品质综合评分呈极显著和显著正相关;剑叶长而窄,叶基角小的品种品质较优;二次枝梗结实率与品质总评分呈极显著正相关。理想品质株型模式特征为:茎秆粗壮,穗下节间较长;倒2叶长宽比适宜、叶面积不能过大,剑叶长而窄、叶基角小,倒3叶宽较大;单穗重较小,着粒密度适中,二次枝梗结实率高。
Correlation and path analysis were performed on 163 early winter rice cultivars (lines) stored in the cold paddy field in Heilongjiang August First Land Reclamation University Rice Research Center to study the relationship between the index of stem, leaf and panicle type and the quality of rice. The results showed that there were extremely significant and significant positive correlations between the internode length and the internode length of panicle, respectively, and the composite score of rice quality. The quality of the cultivars with long and narrow flag leaf, There was a significant and significant positive correlation with total quality score. The characteristics of the ideal quality plant type pattern are as follows: the stems are stout and the internodes are longer; the aspect ratio of the 2 leaves is suitable, the leaf area can not be too large, the length of the leaves is narrow, the leaf base angle is small, Ear weight is small, grain density is moderate, secondary branch stalk high rate.