棉花花瓣旋向与纤维品质育种

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棉花任一果枝或果节的花瓣旋向都有一定的规律可循 ,花瓣的顺时针与逆时针旋向与纤维品质有关 ,其中顺时针旋向的花与纤维长度、强度呈正相关 ,分别达到显著和极显著的水平 ,与细度呈显著负相关。顺时针旋向的长度与强度、细度之间均呈正相关 ,分别达到显著和极显著水平 ,其强度与细度负相关不显著。逆时针旋向与长度呈正相关 ,与强度、细度、衣分呈负相关 ,但均不显著。逆时针旋向的长度与强度呈极显著正相关 ,长度与细度以及强度与细度均呈负相关不显著。利用花瓣旋向与纤维品质的这一特点可以提高育种效率。例如 ,若获得长度、强度好的杂交后代 ,应选用长度、强度较好的亲本的顺旋花等。 The petal rotation of either fruit branch or fruit node had some regularity. The clockwise and anticlockwise rotation of the petals was related to the fiber quality. Among them, the clockwise rotation flower was positively correlated with the fiber length and strength, respectively Significant and highly significant levels were negatively correlated with the fineness. There was a positive correlation between the clockwise rotation length and the strength and the fineness, respectively, reaching significant and extremely significant levels, and the negative correlation between the strength and the fineness was not significant. The counterclockwise rotation direction is positively correlated with the length, but negatively correlated with the strength, fineness and lint, but not significant. The anticlockwise rotation length and strength are extremely significant positive correlation, the length and fineness as well as the strength and fineness were negatively correlated was not significant. This feature of petal rotation and fiber quality can improve breeding efficiency. For example, if the length and intensity of hybrid progeny are obtained, it should be used with the parents of the length and intensity better.
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