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1水稻数量性状(QTL)定位主要作图群体及统计方法概述显示文摘水稻许多重要的性状是由多基因控制的数量性状,因此数量性状的研究对促进水稻高产、抗病、质优具有重要意义。分子生物技术的迅速发展和QTL定位方法的日趋完善,为水稻数量性状的研究提供了基础。综述了QTL定位的原理、定位群体和常用的方法,并对目前水稻数量性状QTL定位存在的问题和发展前景进行了探讨。孙佳丽 彭锐 彭既明 2016湖南农业科学2016,,7:4
2Genetic Diversity among Parents of Hybrid Rice Based on Cluster Analysis of Morphological Traits and Simple Sequence Repeat Markers显示文摘The genetic diversity of 41 parental lines popularized in commercial hybrid rice production in China was studied by using cluster analysis of morphological traits and simple sequence repeat (SSR) markers. Forty-one entries were assigned into two clusters (i.e. early or medium-maturing cluster; medium or late-maturing cluster) and further assigned into six sub-clusters based on morphological trait cluster analysis. The early or medium-maturing cluster was composed of 15 maintainer lines, four early-maturing restorer lines and two thermo-sensitive genic male sterile lines, and the medium or late-maturing cluster included 16 restorer lines and 4 medium or late-maturing maintainer lines. Moreover, the SSR cluster analysis classified 41 entries into two clusters (i.e. maintainer line cluster and restorer line cluster) and seven sub-clusters. The maintainer line cluster consisted of all 19 maintainer lines, two thermo-sensitive genic male sterile lines, while the restorer line cluster was composed of all 20 restorer lines. The SSR analysis fitted better with the pedigree information. From the views on hybrid rice breeding, the results suggested that SSR analysis might be a better method to study the diversity of parental lines in indica hybrid rice.WANG Sheng-jun Lu Zuo-mei WAN Jian-min 2006Rice science2006,13,3:3
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