期刊论文

Identifying QTLs for Thermo-tolerance of Grain Chalkiness Trait in Rice

Chen, L.

中文

中国水稻科学

1001-7216

2017

31

3

257-264

10.16819/j.1001-7216.2017.6172

国家自然科学基金资助项目(30900874) 湖南省自然科学基金资助项目(11JJ3026) 湖南省科技计划博士后专项(2012RS4037) 湖南省教育厅重点项目(17A100) 作物学开放基金资助项目(ZWKF201504).

本校为第一且通讯机构

【目的】本研究旨在筛选与稻米外观品质高温耐性连锁的分子标记,为稻米品质育种提供参考。【方法】以耐热水稻品系996和热敏感水稻品系4628为亲本构建的重组自交系为材料,采用垩白粒率耐热指数、垩白大小耐热指数和垩白度耐热指数为评价指标,对水稻垩白性状的高温耐性QTL进行检测。【结果】采用复合区间作图法两年共检测到垩白性状高温耐性QTL 24个,包括垩白粒率高温耐性QTL 8个,垩白大小高温耐性QTL 12个,垩白度高温耐性QTL 4个。其中,第6染色体上的2个垩白粒率高温耐性QTL和第7染色体上的2个垩白度高温耐性QTL在两年中重复检测到,且这2个稳定表达的垩白度位点与2015年检测到的第7染色体上的垩...

[Objective] The molecular markers linked to high temperature tolerance of rice appearance quality were screened for the purpose of providing an important foundation of improvement for rice grain quality. [Method] The quantitative trait loci (QTLs) for heat tolerance of grain chalkiness trait were identified using the recombinant inbred lines(RILs) derived from a cross between the heat tolerant rice line 996 and the heat sensitive line 4628. The heat tolerance indexes of chalky grain rate, chalkiness size and chalkiness degree were used as the heat-tolerance indicators. [Result] 24 QTLs for hea...