甘蔗主要性状的遗传相关及通径分析  

The genetic correlation and path analysis on several main characteristics of sugarcane

作　　者：黄家雍[1] 诸葛莹[1] 刘海斌[1] 谭芳[1] 闭少玲[1] 

机构地区：[1]广西甘蔗研究所

出　　处：《甘蔗（福建）》1999年第3期6-9,共4页Sugarcane

摘　　要：研究９个甘蔗品种的株高、茎径、单株茎数、锤度、公顷有效茎数５个性状间的遗传相关及其对蔗茎产量和含糖量的效应，结果表明：与蔗茎产量相关最密切，直接效应和总贡献最大的是公顷有效茎数，其次是株高，茎径第三，单株有效茎最小。对公顷含糖量的相关和总贡献以公顷有效茎数最大，株高第二，锤度第三，茎径和单株有效茎数的贡献小，据此认为，广西甘蔗育种通过选择株高入手，注重锤度，兼顾茎径是选育高产高糖品种的有效途径之一。生产上，适当增加播种量，保持一定数量的公顷有效茎数是获得高产的重要措施。The correlations among plant height, stalk diameter, stalk number per plant, brix, millable stalk number per hectare and their contributions to cane yield and sugar content were studied with 9 varieties. The results showed that millable stalk number per hectare most closely correlated with cane yield. Its direct effect and total contribution ranked the first. Plant height and brix ranked the second and the third respectively. Stalk diameter and millable stalk number per plant contributed the least. It was suggested that one of the effective way in sugarcane breeding in Guanxi is to aim at plant height, brix and stalk diameter. As to field cultivation, to increase planting density properly and keep rational millable stalk number per hectare is an important approach to obtain high yield.

关 键 词：性状 遗传相关 通径分析 甘蔗 

分 类 号：S566.103.2[农业科学—作物学]