基于多元统计法的枣胚败育影响因素研究Study on the factors of embryo abortion in Ziziphus jujuba based on multivariate statistics
梁春莉;赵锦;刘孟军;
摘要(Abstract):
为揭示果实外观发育与枣果胚败育的关系,对87个枣品种花期、坐果时间、前期坐果率、不同发育时期的果实纵横径、果形指数、果实含仁率等15个指标进行了调查,并进行了主成分聚类分析,然后将直接反映胚败育的果实含仁率(3个指标)与其余12个指标进行了典型相关分析。结果表明,将15个指标用7个主成分(果实生长速度、大果果实生长特性、中果果实生长特性、花期、小果果实生长特性、中果含仁率、小果含仁率)来表示,累计贡献率高达85.67%(≥85%);利用上述7个主成分对87个品种进行聚类分析,综合SPRSQ、CCC、PSF、PST2 4个统计变量可将87个品种分为3类,分别为果实快速发育型、中间型、慢速发育型。相关分析表明,大果含仁率可作为枣胚败育的主要衡量指标,而大果果实的前期坐果速度和果实形状与其含仁率高度相关。
关键词(KeyWords): 枣;多元统计;胚败育
基金项目(Foundation): 国家科技支撑计划(2008BAD92B03、2007BAD36B07、2006BAD18B02);; 河北自然科学基金(C2009000534、08D020、C2007000452、C2008000303)
作者(Author): 梁春莉;赵锦;刘孟军;
Email:
DOI: 10.13925/j.cnki.gsxb.2012.03.030
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