作　　者： ; ; ; ;

机构地区： 揭阳学院

出　　处： 《安徽农业科学》 2009年第24期11516-11518,共3页

摘　　要： [目的]为棉花育种工作提供科学依据。[方法]运用EXCEL和DPS软件,研究不同人工授粉措施提高柱头外露棉自交结实率的效果。[结果]5种授粉方式和7份材料的P值分别为0.093 211和0.465 448,都大于0.05,说明不同授粉方式的柱头外露棉的自交结实率差异不显著。4个授粉时间段的P值为0.009 319,小于0.01,说明不同授粉时间段的柱头外露棉的成铃率差异极显著;7份材料的P值为0.016 372,小于0.05,说明授粉时间段对不同材料影响的差异显著。材料Ys18的授粉效果最佳,其次为Ys4、Ys3、Ys8、Ys1、Ys5和Ys6。37份材料间和不同温度间的P值分别为0.145 817和0.998 242,都大于0.05。[结论]大田条件下,柱头外露棉适宜的人工授粉时间是9:45以前,使用任何一种人工授粉方式都可行。 [ Objective ] The research aimed to supply scientific basis for the breeding work of cotton. [ Method ] The effects of different hand pollination measures on enhancing the self - fruitful rate of cotton germplasm with stigma showing （CGSS） were researched by applying EXCEL and DPS software. [ Result ] The P - values of 5 pollination methods and 7 materials were 0. 093 211 and 0. 465 448 resp. and both of them were greater than 0.05. It was indicated tbat the differences of self-fruitful rate of CGSS among different pollination methods were not significant. The P-value of 4 pollination time segments was 0. 009 319 and it was less than 0.01. It was indicated that the differences of boll setting percentage of CGSS among different pollination time segments were extremely significant. The P-value of 7 materials was 0. 016 372 and it was less than 0.05. It was indicated that the influences of pollination time segments on different materials were significantly different. The pollination effect on Material Ys18 was best and that on Ys4 ,Ys3 ,Ys8 ,Ysl ,Ys5 and Ys6 were secondary. The P-values of 37 materials and different temperatures were 0. 145 817 and 0. 998 242 resp. and both of them were greater than 0.05. [ Conclusion ] In the field, for CGSS, the suitable hand pollination time was before 9：45 and any kind of hand pollination method was feasible.

关 键 词： 柱头外露棉 育种

领　　域： [农业科学]