摘要
对大田生长的陆地棉(Gossypium hirsutum L.)和海岛棉(G.bardadense L.)7个品种的纤维分化进行的比较研究表明,各供试品种首先在珠柄顶部突起纤维细胞,后在合点区和腰区,最后在珠孔区。纤维突起的时间和开花当天的 F/E 值(胚珠上纤维细胞数与胚珠表皮细胞总数的比值)因种和品种而异,纤维开始突起的时间与铃期有关。温度影响纤维的分化并最终影响单粒种子上的纤维量,纤维分化的最适温度为25～30℃。
The fiber differentiation of upland cotton(Gossypium hirsutum L.)and sea- island cotton(G.barbadense L.)was comparatively studied in 1986～1987. The results may be summarized as follows: The fiber initials first appeared on crest of the ovule,then on the chalazal zone and the middle zone,latest on the mieropyle zone.The time of fiber initial differentiation and the F/E vaule at anthesis varied with variety and cultivar, which was closely related to the boll period.Temperature influenced fiber diffe- rentiation and fiber population on a single seed,the best of which was 25～30℃.
基金
国家自然科学基金课题
关键词
陆地棉
海岛棉
纤维
棉分化
upland cotton
sea-island cotton
cotton fiber
fiber differentiation
