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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。
The precocity of 10 Upland cotton cultivars was analyzed. Four premature factors: the number of TDSF (X_1), NFB (X_2), VFI (X_3), and HFI (X_4) during the first florescence, (Y) between the regression relationship. The effect of four premature factors on the composition of cotton precociousness is larger in X_1, X_2, X_3 and smaller in X_4. However, the effects of different factors on different cotton varieties are different. The result of fuzzy clustering analysis on the early maturity of 10 cultivars shows the possibility of selecting the precocious varieties of “Physiological Precocity”, so as to achieve the precocious, high yield, stable yield and high quality.