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研究结果表明：①棉铃品质性状根据变异性分为３类，第１类包括铃重、籽指、纤维品质指数和伸长率，易受环境影响；第２类包括同时受控于环境和品种遗传性的强度、衣分和Ｍｉｋ值；第３类包括长度和整齐度。棉株不同部位铃品质性状变异中，下、中部铃明显一致，上、顶部铃一致，下、中部明显小于上、顶部，均大于整株铃。②棉铃品质性状根据相关性分３类，第１类以铃重和Ｍｉｋ值为中心，另含伸长率、整齐度；第２类包括强度和纤维品质指数；第３类包括籽指、衣分、长度，以籽指、衣分为中心。
The results showed that: (1) The quality traits of cotton bolls were divided into three groups according to their variability. The first group consisted of boll weight, seed index, fiber quality index and elongation, and were easily affected by the environment. The second group included both controlled by environment and variety Sexual intensity, clothing score, and Mik value; Category 3 includes length and uniformity. The variation of bell quality traits in different parts of cotton plants was consistent with that of middle and lower tubers. The top and bottom bolls were the same, while the lower and middle parts were obviously smaller than the upper and the top, which were all larger than the whole plant bell. The quality traits of cotton bolls were divided into three categories according to the correlations, the first category was centered on boll weight and Mik value, the other contained elongation and uniformity; the second category consisted of strength and fiber quality index; the third category consisted of seeds, Points, length, referring to seed, clothing points for the center.