| 两种轮回选择方法对沈综C0群体的产量及植株性状的遗传改良效果的研究 |
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| 引用本文： | 姚占军,王守才.两种轮回选择方法对沈综C0群体的产量及植株性状的遗传改良效果的研究[J].河北农业大学学报,2001,24(3):13-16. |
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| 作者姓名： | 姚占军 王守才 |
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| 作者单位： | 1. 河北农业大学农学院,
2. 中国农业大学作物学院, |
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| 摘 要： | 应用两种轮回选择方法对玉米(ZeamaysL.)基础群体C0及SC1实施轮回选择.根据调查和考种结果,对各群体的产量及植株性状进行比较分析.结果表明,在选择强度为30%的条件下,FC2群体比基础群体提高了25.93%,FC3群体比基础群体提高了35.38%.单株粒重、穗重、穗粗、穗行数、行粒数和百粒重分别获得了12.57、13.06、1.23、6.77、1.54和2.71的遗传增益,这些性状基本上是朝着对产量有利的方向发展,而今后的选择必须注意穗长、行粒数和植株性状的选择.
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| 关 键 词： | 玉米 群体改良 选择强度 遗传增益 |
| 文章编号： | 1000-1573(2001)03-0013-04 |
| 修稿时间： | 2001年2月14日 |
Study on genetic improvement effect in Shenzong C0 population in yieldtrait s and plant characters by means of two recurrent selection methods |
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| YAO Zhan jun ,WANG Shou cai.Study on genetic improvement effect in Shenzong C0 population in yieldtrait s and plant characters by means of two recurrent selection methods[J].Journal of Agricultural University of Hebei,2001,24(3):13-16. |
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| Authors: | YAO Zhan jun WANG Shou cai |
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| Institution: | YAO Zhan jun 1,WANG Shou cai 2 |
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| Abstract: | The recurrent selection by means of two methods have been completed in maize ( Zea mays L.) basic population and SC 1 The yield and agronomic traits were analyzed according to the investigation results The experimental results showed that over one selection cycle with 30% selection intensity yield of population, FC 2 and FC 3 increased by 25 93%, 35 38% in contrast to basic population Genetic gains for grain weight per plant, ear weight per plant, ear thickness, ear row number, kernel number per row, 100 kernel weight were 12 57, 13,06, 1 23, 6 77, 1 54 and 2 71 respectively Most of maize traits after improvement were improved to be more favorable for increasing yield The number of grains, ear length and plant type must be focused in the future selection |
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| Keywords: | maize population improvement selection intensity genetic gain |
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