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对圆锥形、卵圆形及圆球形三种铃形的 1 5个陆地棉品系的棉铃性状进行了研究。结果表明 :( 1 )铃形为圆锥形的品系铃体积、长度、宽度、长宽比最大 ,不孕子率最高 ,子指最大 ,但其棉铃经济系数最低 ;铃形为卵圆形的品系衣分最高 ,但其铃体积、宽度最小 ,铃重最低 ,每囊健子数最少 ;铃形为圆球形的品系铃重、棉铃经济系数最高 ,每囊健子数最多 ,但其衣分、不孕子率最低 ,子指最小。( 2 )在纤维品质方面 ,铃形为圆锥形的品系纤维长度最长 ,整齐度、比强度最高 ,麦克隆值最小 ,综合纤维品质优于卵圆形与圆球形铃品系。 ( 3)相关分析表明 ,铃体积、长度、长宽比与棉铃经济系数都达到显著或极显著负相关 ;铃体积、长度与麦克隆值存在显著负相关 ,铃体积与比强度存在显著正相关
Cotton boll traits of fifteen upland cotton lines conical, oval and spherical were studied. The results showed that: (1) The volume, length, width and aspect ratio of bolls with conical shape were the largest, with the highest infertility rate and sub-index, but the bolls had the lowest economic coefficient; The highest volume of clothes, the smallest volume and width of bell, the lowest boll weight, and the lowest number of healthy bellies per bellied. The bolls with round bell shape had the highest economic coefficient and the highest number of healthy bolls per bag, The lowest rate of infertility, sub-means the smallest. (2) In the aspect of fiber quality, the bell-shaped conical fiber has the longest length, the highest regularity and the highest specific strength and the smallest micronaire value. The comprehensive fiber quality is superior to the oval and round-shaped bell strains. (3) Correlation analysis showed that the volume, length, aspect ratio and economic coefficient of cotton boll all reached a significant or extremely significant negative correlation; the volume and length of the boll had significant negative correlation with the micronaire value, and the volume and length of the boll had significant positive correlation