| 大麦早熟突变系高产基因型特征 |
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| 引用本文： | 陈秀兰,韩月澎,何震天,杨鹤峰.大麦早熟突变系高产基因型特征[J].核农学报,2000,14(3):129-133. |
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| 作者姓名： | 陈秀兰 韩月澎 何震天 杨鹤峰 |
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| 作者单位： | 江苏里下河地区农科所,江苏,扬州,225002 |
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| 摘 要： | 运用通径分析和逐步回归相结合的统计方法 ,研究迟熟品种苏农 90 5 2的 3 6个早熟突变系的 8个农艺性状之间的遗传相关和各自的遗传参数 ,以及高产基因型特征。结果表明 :1 生育期较亲本提早的幅度为 2～ 1 3d,产量性状的突变范围较大 ;2 生育期与每穗粒数呈极显著遗传相关 ;3 影响单株产量的因子 ,按直接作用大小排列为 :单株有效穗 >千粒重 >每穗总粒数 >结实率 ,即早熟突变系高产基因型特征首先是多穗 ,其次是大粒 ,早熟高产品种的选育必须采取两高 (穗数、粒重 )一低 (粒数 )育种策略 ;4 早熟突变系的千粒重和生育期有较高的广义遗传力 ,单株有效穗和单株产量广义遗传力较小 ,遗传变异系数和遗传进度较大
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| 关 键 词： | 大麦 早熟突变 高产基因型特征 通径分析 |
| 收稿时间： | 2009-12-31 |
| 修稿时间： | 1999-11-22 |
THE CHARACTERISTICS OF HIGH\|YIELD GENOTYPE OF EARLY\|MATURE MUTANT LINES IN BARLEY |
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| CHEN Xiu-lan,HAN Yue-peng,HE Zhen-tian,YANG He-feng.THE CHARACTERISTICS OF HIGH\|YIELD GENOTYPE OF EARLY\|MATURE MUTANT LINES IN BARLEY[J].Acta Agriculturae Nucleatae Sinica,2000,14(3):129-133. |
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| Authors: | CHEN Xiu-lan HAN Yue-peng HE Zhen-tian YANG He-feng |
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| Abstract: | The correlation and genetic parameters of eight agronomic traits of 36 early mature mutant lines induced from barley Sunong 9052 were studied by stepwise regression and path analysis.The results showed that:(1)the growing period of early mutants was shortened 2～13 days from that of their parent and the trait of yield had a great mutation range;(2)the number of grain per panicle significantly correlated with the days from sowing to heading;(3)according to direct path coefficients,the main characters related with individual plant\|yield were in order of productive panicle per plant>1000\|grain\|weight>number of grain per panicle>fertility,the high\|yield genotype had more productive panicle and higher 10000\|grain\|weight,and to increase the yield in the breeding of early mature mutation was to select the lines with more tillers and productive panicles,higher 1000\|grain\|weight and lower number of grain per panicle;(4)the higher broad\|sense heritability and genetic variation coefficient were found in 1000\|grain\|weight and the days from sowing to heading. |
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| Keywords: | barley early mature mutant high yield genotype path analysis |
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