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甜莱为典型的异花授粉作物,个体间的差异较大。而作为糖产量构成的主要因素即根重与糖分之间一般又呈负相关,这给甜菜的定向选择带来了困难。因此,寻找并借助若干与根重、含糖相关的形态学上的性状作指标,用以提高原种提纯复壮、系统选育,特别是杂交亲本改良的预见性,就成为甜菜遗传学研究上一个具有一定理论意义与实践意义的课题。本试验试从甜菜叶部性状与根重、糖分之遗传相关方面进行一些初步探讨。
Sweet Lai is a typical cross-pollinated crops, large differences between individuals. However, the main factor that constitutes sugar production is the negative correlation between root weight and sugar content, which brings difficulty to the directional selection of sugar beet. Therefore, looking for and making use of morphological traits related to root weight and sugar content as indexes to improve the predictability of purification and rejuvenation of elite species, and breeding of parents in particular, and improvement of hybrid parents in particular, have become the research on beet genetics A certain theoretical and practical significance of the topic. In this experiment, some preliminary discussions were made on the genetic relationship between sugarbeet leaf traits and root weight and sugar content.