【摘要】 通过天然红叶绿色棉和绿叶白色棉的杂交,统计分析F1,F2代叶与纤维色泽的遗传分离规律,以及色素对纤维生长的影响。验证了红叶色素和绿色长绒色素性状是由两对位于两条染色体上,由独立遗传的不完全显性基因控制;而绿短绒为完全显性遗传,并且与绿长绒性状位于同一染色体上,由两对非等位基因控制,其遗传距离为1.26 cM。同时,t测验统计分析结果显示,绿纤维棉株的衣分和绒长极显著低于白色棉,说明纤维中绿色色泽有阻碍棉花纤维生长发育作用;红叶对铃重与铃数以及纤维长度和衣分都没有显著影响。因此,在改良彩棉纤维色泽的同时要与提高纤维品质研究相结合,达到共同提高的目的。更多还原

【Abstract】 To provide insights into improvements in yield and fiber quality of colored cotton,the experiment for investigating the inheritance of naturally colored cotton was carried out.It was indicated by a comprehensive genetic analysis on natural red leaf,green lint and fuzz,traits of red leaf and green lint were controlled by one pair of genes incomplete in dominance on non-homologous chromosomes,respectively.Green fuzz was controlled by one pair of complete dominant gene and located at the same chromosome with green lint traits,and their genetics distance was 1.26 cM.The result showed that the lint and fiber length of green fiber plant was significantly less than that of white fiber plant analyzed by t tests,while red leaf had no significant influence on yield or fiber quality.It was suggested that green fiber gene played an important role in fiber quality.Therefore,combination studies of cellulose synthesis and color forming in fiber are necessary to improve fiber color and quality of colored cotton.更多还原