摘要
以海岛棉海1为供体亲本,中221、中棉所36(中36)两个陆地棉品种(系)为轮回亲本配制了两套杂交回交的组合:中36×海1组合和中221×海1组合。通过对这2套组合的不同世代群体杂交铃、自交铃纤维品质性状的分析,结果:以分离群体BC1F1为父本,轮回亲本中221、中36分别为母本时,母体植株上的杂交铃(BC2F0)的纤维品质性状与父本BC1F1群体植株上自交铃的纤维品质性状之间在平均值、极差和变异系数上存在显著差异,相关性不显著,而与母本(轮回亲本)值接近;又以分离群体BC2F1为母本,轮回亲本中221、中36分别为父本,母体植株上的杂交铃(BC3F0)纤维品质与母本BC2F1群体植株上自交铃的纤维品质性状在平均值、极差和变异系数上接近,除整齐度以外,纤维长度、比强度、麦克隆值和伸长率都达到了极显著的正相关。这些结果表明,杂交铃的纤维品质偏向母体植株上的自交铃的纤维品质,父本花粉的基因型对杂交当代种子上的纤维品质没有显著的影响,杂交铃种子上的纤维品质主要由当代种子的表皮细胞基因型即母体植株基因型决定,而当代种子胚的基因型作用不明显。
Hail, a Gossypium barbadense L. variety with super fiber quality, and CCRI36 and Zhong221, two upland cotton cultivars (Gossypium hirsutum L.), were used as recurrent parents to develop two backcross combinations of CCRI36×Hai 1 and Zhong221 ×Hal 1. Fiber quality of inter-crossing bolls and self-crossing bolls were analyzed from different generations of the two combinations. The results showed that there existed significant difference in the average value, pole difference and CV% of fiber quality traits, and no significant correlation in fiber quality traits between inter-crossing bolls (BC2F0) and self-crossing bolls (BCjFj) from male parent plants. There existed no significant difference in the average value, pole difference and CV% of fiber quality traits between inter-crossing bolls (BC2F0) and self-crossing bolls from the recurrent parents when BC1F1 plants were used as male parents and the recurrent parents (CCRI36, Zhong221) as female parents. The results also showed that average value, pole difference and CV% of fiber traits of inter-crossing bolls (BC3F0) were close to those of the female parents (BC2F1). When BC2F1 populations were used as female parents and the recurrent parents (CCRI36, Zhong221) were used as male parents, there were extremely significant positive correlation for fiber length, strength, micronaire value and elongation, except for fiber uniformity between inter-crossing bolls (BC3F0) and self-crossing bolls (BC2F1). So, fiber quality of inter-crossing bolls were close to those of self-crossing bolls of maternal plants and the male parent pollen genotype had no prominent effect to fiber quality traits of inter-crossing bolls. Fiber quality traits were controlled mainly by maternal plant genotype, while the contemporary seed embryonal genotype showed no significant effects for fiber quality.
出处
《遗传》
CAS
CSCD
北大核心
2008年第11期1466-1476,共11页
Hereditas(Beijing)
基金
国家重点基础研究发展规划项目(973项目)(编号:2004CB117306)资助~~
关键词
棉花
纤维品质
母体基因型
杂交铃
自交铃
cotton
fiber quality
maternal genotype
inter-crossing bolls
self-crossing bolls