| The Growth Analysis in the Kernel Filling Process of K-Type Hybrid 901 and Its Parent Wheat |
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| 作者姓名： | GONG Yue-hua LIU Ying-zhou GAO Jun-feng |
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| 作者单位： | College of Life Science, Northwest A ＆ F University, Yangling 712100, PR.China |
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| 基金项目： | Acknowledgements We are grateful for the grants from the National Natural Science Foundation of China （39670436）. The authors thank Dr Wang Junru, Professor Li Shengxiu and Gao Xinke for English writing of this paper. |
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| 摘 要： | Using Matlab software, the grain filling process of hybrid wheat 901 and its parents was fitted by Richards equation W = A/（1 ＋ Be^-kt in order to study the characteristics of grain filling of the hybrid. The active grain growth period of the hybrid was 6 d longer than that of Shaan 229, and its final grain weight （43.7 g/1 000 grains） was higher than that of Shaan229 （36.3 g/1 000 grains）. N values of 901 and R205 were both less than 1, and their grain growth was faster in the early filling stage, while slower in the middle-late stage. N value of Shaan 229 was 〉1~ and its growth was slower in the early stage and faster in the middle stage. The period of early stage of 901 was shorter and of middle-late stage was longer. The situation of Shaan 229 was totally reversed. For parents, the father plant R205 was similar to hybrid wheat 901, whereas its mother plant K3314A similar to Shaan 229. It has been found that Richards equation was more suitable for fitting the grain filling process of wheat than Logistic equation.
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| 关 键 词： | 小麦 杂交技术 杂种优势 特征特性 |
The Growth Analysis in the Kernel Filling Process of K-Type Hybrid 901 and Its Parent Wheat |
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| GONG Yue-hua LIU Ying-zhou GAO Jun-feng.The Growth Analysis in the Kernel Filling Process of K-Type Hybrid 901 and Its Parent Wheat[J].Agricultural Sciences in China,2005,4(12):903-908. |
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| Authors: | GONG Yue-hua LIU Ying-zhou GAO Jun-feng |
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| Abstract: | Using Matlab software, the grain filling process of hybrid wheat 901 and its parents was fitted by Richards equation W = A/(1 +Be-kt in order to study the characteristics of grain filling of the hybrid. The active grain growth period of the hybrid was 6 d longer than that of Shaan 229, and its final grain weight (43.7 g/1000 grains) was higher than that of Shaan229 (36.3 g/1 000 grains). N values of 901 and R205 were both less than 1, and their grain growth was faster in the early filling stage, while slower in the middle-late stage. N value of Shaan 229 was ＞1, and its growth was slower in the early stage and faster in the middle stage. The period of early stage of 901 was shorter and of middle-late stage was longer. The situation of Shaan 229 was totally reversed. For parents, the father plant R205 was similar to hybrid wheat 901, whereas its mother plant K3314A similar to Shaan 229. It has been found that Richards equation was more suitable for fitting the grain filling process of wheat than Logistic equation. |
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| Keywords: | Hybrid wheat 901 Parent plants Grain-filling |
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