苎麻孤雌生殖后代染色体倍性变异的研究  

Studies of chromosomal ploidy variation on progeny of the parthenogenic planis of ramie

作　　者：晏春耕[1,2] 杨瑞芳[1,2] 王春桃 郑思乡[1,2] 崔国贤 程尧楚[1,2] 李宗道 

机构地区：[1]湖南农业大学苎麻研究所 [2]湖南农业大学农学系

出　　处：《湖南农业大学学报（自然科学版）》1997年第2期123-126,共4页Journal of Hunan Agricultural University(Natural Sciences)

摘　　要：对化学药剂诱导苎麻孤雌生殖后代染色体组成和倍性的观察结果表明：苎麻孤雌生殖后代染色体数目变化很大，有单倍体、混倍体和非整倍体细胞．单倍体细胞在５２．５％～６２．５％之间，并伴有不均等分裂、落后染色体、小染色体等有丝分裂异常现象．另外对天然雄性不育孤雌生殖的结实率及其后代植株倍性进行了观察。The chromosomal constitution and ploidy in parthenogenic progeny plants of ramie induced by chemical treatment were observed.Their offsprings and chromosomal numbers were varied.Among them were haploid,mixploid and aneuploid.Haploid cells took up 52 5%￣62 5%.Non equal mitosis, lay behind and mini chromosomals appeared. Naturally male sterile parthenogenic plants of ramie were observed on seedset percentage and their offsprings ploid. The causes of the fluctuation of chromosomal number was analysed.

关 键 词：苎麻 单性生殖 染色体 变异 

分 类 号：S563.032[农业科学—作物学]