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直立穗型水稻的形态特点:①稻穗从抽出至成熟基本保持直立状态;②茎秆从上至下均较弯曲的穗型品种粗,抗倒性强;③叶片厚、叶色浓绿且持续时间长。株高、叶长、叶宽、茎叶基角与弯曲穗型品种无大差异。相关分析表明:倒4 叶与产量性状相关最密切,与穗粒数、空秕粒率、成粒重呈显著或极显著正相关,与百粒重呈显著负相关;其次是倒3 叶、倒5 叶;各茎节粗与百粒重呈正相关。
The morphological characteristics of erect panicle type rice: (1) The ear of rice maintained the upright state from extraction to maturity; (2) The stems were thicker than the curved panicle varieties from top to bottom and had strong lodging resistance; (3) Long duration. There were no significant differences in plant height, leaf length, leaf width, stem-leaf base angle and curved ear type. Correlation analysis showed that the inverted 4 leaf was the most closely related to the yield traits and had a significant or very significant positive correlation with the grain number per spike, Down 5 leaves; each stem section coarse and 100 kernel weight was positively correlated.