木薯品种生长发育及淀粉积累特性研究

Studies on the Characters of Growth and Starch Accumulation of Several Cassava Varieties

１９９８－１９９９年对 ＳＣ１２４、ＧＲ９１１、ＧＲ８９１、ＳＣ２０５、南洋红（ＣＫ）几个木薯品种的生长发育及淀粉积累特性进行研究。结果表明，ＳＣ１２４种茎发芽快、出苗早、出苗整齐、出苗率高、长势旺盛、植株不分枝或极少分枝、适应性强、比较耐寒、结薯多、块根较长而且大、产量高、块根淀粉含量也较高。ＧＲ９１１种茎发芽快、出苗早、出苗率高、生长势旺盛、植株高大、茎秆粗壮、不分枝或极少分枝、适应性强、结薯习性好、结薯集中、容易收获、块根粗大、产量高、淀粉含量也较高。ＧＲ８９１植株较矮、分枝多、出苗率、生长势适中、结薯多、块根大小比较均匀、产量较高、块根淀粉积累早、淀粉含量高、氢氰酸含量低、食性好。ＳＣ２０５种茎发芽较快、出苗率较高、植株不分枝或极少分枝、适应性强、结薯习性好、结薯较多而且集中、容易收获、产量和淀粉舍量也较高。

Tlie characters of growth and starch accumulation of several cassava varieties were studied in this experimento TTie result showed that, both SC124 and GR911 not only germinated and grew quickly and vigorously but also produced more root tubers and higher yield than other varieties. GR891 accumulated starch in its root tubers earliest and the starch content of root tubers was highest, and SC205 had stronger resistance to wind harm because of its straight and no - branch stem0 Besides, SC205 as well as GR911 was easy to be harvested as their root tubers grew concentratively and shallowly in the soil.