5个木薯品种生理特性与主要农艺性状的研究

对木薯品种西选07、桂垦09-11、辐选01、南植199和华南205的生理特性和主要农艺性状进行比较研究。结果表明,5个木薯品种的叶片叶绿素、蔗糖、可溶性糖含量、农艺性状、产量和淀粉含量有显著差异。西选07块根产量最高,其次是桂垦09-11和辐选01;南植199淀粉含量最高,其次是辐选01和西选07;西选07淀粉产量最高,其次是辐选01和桂垦09-11;西选07单株块根数、块根长、块根粗和块根重最高,其次是桂垦09-11和辐选01;南植199叶片蔗糖和可溶性糖含量最高,其次是西选07和辐选01。叶片蔗糖、可溶性糖含量均与块根淀粉含量呈极显著正相关,可作为高淀粉木薯品种评价的生理指标。淀粉产量综合反映木薯淀粉生产能力,可作为木薯品种品质评价的指标。

Studies on Physiological Characteristics and Main Agronomic Traits of Five Cassava Varieties

The physiological characteristics and main agronomic traits of cassava varieties Xixuan 07, Guiken 09-11, Fuxuan 01, Nanzhi 199 and Huanan 205 were studied. The results showed that the contents of chlorophyll, sucrose, soluble sugar in leaves, yield and starch contents of different cassava varieties were significantly different. Xixuan 07 had the highest root tuber yield, followed by Guiken 09-11 and Fuxuan 01. Nanzhi 199 had the highest starch content, followed by Fuxuan 01 and Xixuan 07; Xixuan 07 had the highest starch yield, followed by Fuxuan 01 and Guiken 09-11. The root tuber numbers, length, diameter and the root tuber weight per plant of Xixuan 07 were the highest in all cassava varieties used in the test. Nanzhi 199 had the highest contents of sucrose and soluble sugar in leaves, followed by Xixuan 07 and Fuxuan 01. There were significant positive correlations between the content of sucrose and soluble sugar in leaves, and the content of starch in root tubers. The contents of sucrose and soluble sugar could be used as physiological indexes for evaluation of high starch cassava cultivars. The starch yield was a comprehensive index reflecting the capacity of cassava starch production. It is more scientific and reasonable that the starch yield is used as a quality evaluation index of cassava varieties. The starch yield can reflect the comprehensive ability of cassava starch production, and it can be used as an index to evaluate the quality of cassava varieties.