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玉米籽粒容重与产量和品质的相关分析
引用本文:ZHANG Li,张丽,董树亭,刘存辉,王空军,张吉旺,刘鹏.玉米籽粒容重与产量和品质的相关分析[J].中国农业科学,2007,40(2):405-411.
作者姓名:ZHANG Li  张丽  董树亭  刘存辉  王空军  张吉旺  刘鹏
作者单位:山东省作物生物学重点实验室/山东农业大学农学院
基金项目:国家重点基础研究发展计划(973计划);国家粮食丰产科技工程项目
摘    要:【目的】了解不同品种玉米籽粒容重的差异及其与产量和品质的关系。【方法】采用聚类分析、相关分析及通径分析的方法,对多个玉米品种籽粒的容重和产量、品质性状进行分析。【结果】将山东省最新审定的29个玉米品种划分为三类,高容重型(H-TW)、中容重型(M-TW)和低容重型(L-TW)。玉米容重的变异来源于基因型和试验地区,二者均达极显著水平。受基因型控制的籽粒形状是决定容重的重要因素,不同粒型之间容重差异显著,容重值排序是爆裂型>硬粒型>马齿型。施氮肥对玉米容重的影响不大,同一品种不同的施氮量处理之间玉米的容重差异不显著。相关分析表明,不同类型玉米籽粒容重与千粒重和产量均呈极显著的正相关。容重与蛋白质含量和淀粉总含量呈显著正相关,与粗脂肪含量呈负相关。通径分析指出赖氨酸含量对玉米容重起负作用,且由于决定系数最小(R(3)2=-0.05%),成为影响容重的主要限制因素,尤其是对蛋白质形成的限制,但对淀粉总含量的限制作用较小。【结论】提高玉米籽粒容重,应该首先着眼于籽粒总淀粉含量的提高。

关 键 词:玉米  氮肥  产量  品质  营养成分
收稿时间:2005-10-14
修稿时间:2005-10-19

Correlation Analysis on Maize Test Weight, Yield and Quality
ZHANG Li.Correlation Analysis on Maize Test Weight, Yield and Quality[J].Scientia Agricultura Sinica,2007,40(2):405-411.
Authors:ZHANG Li
Abstract:29 summer maize varieties grew in Shandong province were divide into three types through cluster analysis: High-test weight type (H-TW), Middle-test weight type (M-TW) and Low-test weight type (L-TW). Both the variations of variety and that of area were significant. Kernel shape controlled by gene types was important determinant factor for test weight, and the difference of test weight between different kernels was significant. The value was Pop> Flint >Dent. The effect of nitrogen amount on test weight of maize was not significant. Correlation analysis indicated that test weight of different type maize was significantly and positively correlated with kernel weight and yield. There was a negative correlation between test weight and gross fat content. Test weight was correlated positively and significantly with protein content and starch content separately. Pass analysis also indicated that Lysine content was the main limit factor for test weight, because of its least decision coefficient (R(3)2=-0.05%), and the Lysine especially limited the forming of protein. Therefore, increasing starch content is important for test weight.
Keywords:Maize(Zea mays L  )  Nitrogen fertilizer  Yield  Quality  Nutrition components
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