论文部分内容阅读
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量大，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，广西甘蔗育种从选择株高入手，注重锤度，兼顾茎径，是选育高产高糖品种的有效途径之一。在生产上，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 genetic correlation among plant height, stem diameter, stem number per plant, brix, effective stem number per hectare and their effect on yield and sugar content of cane were studied. The results showed that: The yield was the most closely related, the direct effect and the total contribution of the largest number of effective stems per hectare, followed by the plant height, stem diameter third, the smallest effective stems per plant. The relevant and total contribution to the sugar content in hectares is the number of effective stems per hectare, the second plant height, the third brix, and the small contribution of stem diameter and number of effective stems per plant. Therefore, Guangxi sugarcane breeding starting from the selection of plant height, pay attention to brix, taking into account the stem diameter, is an effective way to breed high yield and high sugar varieties. In production, the appropriate increase in seeding, to maintain a certain number of hectares and effective number of stems is an important measure to obtain high yield.