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OALib Journal期刊
ISSN: 2333-9721
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基因型及播种密度对冬小麦分蘖期生长、生物量分配及产量的影响
DOI: 10.3724/SP.J.1145.2011.00369, PP. 369-375
Keywords: 小麦,基因型,播种密度,籽粒产量,相关性
Abstract:
采用双因素随机区组设计，研究了分别来自干旱与湿润区的4个小麦品种6个播种密度对冬小麦生长、生物量分配及产量的影响.结果表明，在本试验条件下，生长指标、生物量积累各指标及籽粒产量均主要受基因型和播种密度互作（g×d）影响，而成穗数、穗粒数主要受播种密度（d）的影响，基因型（g）则是引起小麦籽粒产量、千粒重及穗长变化的主要因素.白粒三号和川麦39最佳播种密度为315×104hm-2，籽粒产量达到5863.8kghm-2和5882.1kghm-2；西农2000与陕麦139产量最佳播种密度为195×104hm-2，籽粒产量分别为6422.4kghm-2和7062.4kghm-2.陕西小麦品种籽粒产量高出四川小麦约12.90%~18.62%.相关分析表明，籽粒产量与成穗数、千粒重呈极显著正相关（r=0.8597**，r=0.4993**），而与穗长、地上部干重及根系长度呈极显著负相关，与穗粒数及其它生长、生物量指标无显著相关.研究表明，干旱区小麦在湿润地区种植表现出较大的增产潜力，此外，在生产中应重视基因型和播种密度二者互作所表现出来的优势.表5参31
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