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以珍汕97B为对照,测定江西后期选育的3个保持系99B、新露B和146B粒长、粒宽、千粒重和粒重/粒长性状。结果显示,后期选育的3个保持系粒长较对照珍汕97B显著提高,而千粒重、粒宽和粒重/粒长都有不同程度的降低,表明江西在后期保持系选育中较重视水稻粒形的选择,细长型稻米是选择的重点,而粒重与对照珍汕97B存在差距。相关性分析显示粒重/粒长与粒宽呈极显著正相关,粒长与粒宽呈极显著负相关,其他性状的负相关关系均不显著,这表明粒重的提高和粒形的改良是相关性状综合改良的结果,粒宽在粒形形成中发挥着重要作用。
Taking Zhenshan 97B as control, the three maintainer lines 99B, Xinlu B and 146B in Jiangxi Province were determined for grain length, grain width, grain weight and grain weight / grain length. The results showed that the grain length of the three maintainer lines in late breeding increased significantly compared with that of the control Zhenshan 97B, while the grain weight, grain width and grain weight / grain length all decreased to some extent, indicating that Jiangxi was more important in the maintainer line selection Rice grain shape selection, slender rice is the focus of choice, and the grain weight and the control Zhen Shan 97B there is a gap. Correlation analysis showed that grain weight / grain length and grain width were extremely significant positive correlation, grain length and grain width was extremely significant negative correlation, negative correlation between other traits were not significant, indicating that grain weight and grain improvement Is the result of a comprehensive improvement of related traits, grain width plays an important role in the formation of grain.