陆地棉品种早熟性研究  

An Analysis of Earliness in Upland Cotton Cultivars

作　　者：陈仲方 张治伟[1] 王支凤[1] 

机构地区：[1]江苏省农业科学院经济作物研究所

出　　处：《江苏农业学报》1989年第3期12-19,共8页Jiangsu Journal of Agricultural Sciences

基　　金：国家自然科学基金资助的课题

摘　　要：对10个陆地棉品种的早熟性进行了分析。4个早熟性因素:理论始花期TDSF的天数(X_1),第一果枝节位NFB(X_2),花的垂直间隔期VFI(X_3),花的水平间隔期HFI(X_4),与早熟性指数(Y)之间存在着回归关系。四个早熟性因素对构成棉花早熟性作用的大小,以X_1,X_2,X_3较大,X_4的作用较小,但不同品种的各种因素作用大小不同。10个品种的早熟性模糊聚类分析结果,显示选育“生理早熟”型早熟品种的可能性,从而达到早熟、高产稳产而优质。Four factors affecting the earliness of upland cotton(Gossypium hisutum L.) were analysed: the theoretical duration from sowing to flowering(X1); the main stem node where the first fruiting branch occurs (X2); the vertical flowering interval (X3); and the horizontal flowering interval (X4). There existed a true regression relationship between these four factors (X1-4) and the early maturing index (Y). The effects of the first three factors on earliness were predominant. However, individual factors exhibited effects of different magnitude on different cotton cultivars. Fuzzy clustering showed the possibility of obtaining 'physiologically early maturing' cotton types.

关 键 词：陆地 早熟性 花期 棉 品种 

分 类 号：S562.01[农业科学—作物学]