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本研究以典型的籼粳交(春江06/台中本地1号)F1经花药培养产生的双单倍体(DH)群体为材料,考察了该群体及其双亲的株高、穗颈长、倒三节节间长及节粗。结果表明,株高与穗颈长和各节间长,以及各节间长之间均呈显著的正相关,而各节间长与节间粗不存在显著的相关性;所考察的性状在DH群体中均表现为连续的分布,且有一定数量的超亲个体,呈多基因控制的数量性状特征;QTL分析共检测到30个与株高、穗颈长、倒1、倒2、倒3节节间长和节间粗相关的QTL,它们分布于水稻第1、2、3、4、6、8、9、10和12染色体上,贡献率介于6.3%~29.8%之间;QTL座位的聚合进一步表明,通过不同QTL座位的聚合能调节节间的粗细及株高,以选育茎秆粗壮的耐倒伏材料。
In this study, the DH haploid (DH) population derived from a typical F1 progeny of indica and japonica hybrids (Chunjiang 06 / Taichung Local 1) was used to study the relationship among plant height, ear length, Three section length and section thick. The results showed that there was a significant positive correlation between the plant height and the length of the neck, the length of each internode, and the length of each internode. However, there was no significant correlation between the length of each internode and the internode. DH population showed a continuous distribution, and there is a certain number of super-pro-individuals, the quantitative traits of multi-gene control; QTL analysis of a total of 30 were detected with the plant height, neck length, inverted 1, inverted 2, inverted 3 QTLs with internode length and internode correlation were found on chromosomes 1, 2, 3, 4, 6, 8, 9, 10 and 12 of rice with the contribution rates ranging from 6.3% to 29.8% Aggregation of QTL loci further demonstrated that the internode size and plant height can be regulated by polymerization of different QTL loci to breed stout lodging resistant material.