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本研究以籼稻品种9311为受体和粳稻品种日本晴为供体构建而成的95个染色体单片段置换系为材料,对芒长、芒分布特征以及有芒置换系产量相关因子进行了调查分析。结合2008年和2009年的调查结果,通过代换作图共鉴定出4个与芒有无相关的QTLs,分别位于水稻第1、第2、第5和第7染色体上。qAWN-1被定位在第1染色体RM472与RM1387之间,遗传距离为6.6cM;qAWN-2被定位在第2染色体RM5804与RM4472之间,遗传距离为7.4cM;qAWN-5被定位在第5染色体RM1024与RM2422之间,遗传距离为14.1cM;qAWN-7被定位在第7染色体RM192与RM11之间,遗传距离为33.5cM。本研究所检测到的QTLs可以为理想型无芒品种分子标记辅助育种提供理论依据。
In this study, 95 chromosome segregant substitution lines constructed from indica rice variety 9311 and Japonica rice japonica variety Nipponbare were used as materials to investigate the distribution characteristics of Montane length and width, and the relative factors of yield of Monsoon substitution. Based on the survey results of 2008 and 2009, four QTLs associated with ornariae were identified through substitution mapping, which were located on chromosomes 1, 2, 5 and 7 respectively. qAWN-1 was mapped between RM472 and RM1387 on chromosome 1 with a genetic distance of 6.6 cM; qAWN-2 was mapped on chromosome 2 between RM5804 and RM4472 at a genetic distance of 7.4 cM; qAWN-5 was mapped on chromosome 5 The genetic distance between chromosome RM1024 and RM2422 was 14.1 cM. QAWN-7 was located between chromosome RM192 and RM11 on chromosome 7 with a genetic distance of 33.5 cM. The QTLs detected in this study can provide the theoretical basis for molecular marker-assisted breeding of ideal mangrove species.