摘要： 对谷子根部性状的遗传及根的地下分布研究结果表明，成熟期高秆、矮秆材料的根重、根伤流液大小均是受遗传控制的性状。高秆材料的根条数明显地高于矮秆材料。谷子的根部性状与产量及与产量关系密切的性状之间存在着相关关系。根条多、根重大、后期根伤流液大小适中对植株的产量及产量相关性状的形成非常有利。根系大、在耕作层的分布范围广、后期根活力大、不早衰是高秆材料在产量上明显优于矮秆材料的主要原因。

关键词: 谷子, 高秆, 矮秆, 根, 遗传, 分布, 相关

Abstract: The results of study on the root inheritance and distribution in soil in high and short plant types of foxtail millet (Setaria italic (L.) Beav.) showed that, the root weight and activities at mature stage were geneticaly controlled.The root number in high plant type was more than that in short plant type.The relationship between root characters and yield was significant, the relationship of root characters with the yield characters was significant too.More root number, high root weight and suitable stem cut juice from root at mature stage were helpful to millet plant yield and the yield related characters.Great root system, large distribution in soil and suitable high activities in mature stage were the main reason why the good yield can be getted in high plant type.

Key words: Foxtail millet, High and short plant type Root, Inheritance, Distribution, Correlation