| 高产水稻品种主要经济性状遗传分析及其超高产育种策略的探讨 |
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| 引用本文： | 徐大勇,刘洪福,杜永,徐敏权,陈焕淦.高产水稻品种主要经济性状遗传分析及其超高产育种策略的探讨[J].扬州大学学报(农业与生命科学版),2000,21(1):12-15. |
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| 作者姓名： | 徐大勇 刘洪福 杜永 徐敏权 陈焕淦 |
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| 作者单位： | 1. 江苏省连云港市农业技术推广中心,江苏连云港 222001
2. 江苏省岗埠农场农科所,江苏东海 222300 |
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| 基金项目： | 连云港市科委重点攻关项目. |
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| 摘 要： | 利用20个高产水稻品种(系),研究了与产量有关的12个经济性状的基本遗传参数,并进行了主成分分析.结果表明穗数/m2、产量、株高、千粒重的遗传力较高,结实率、干物重、颖花量相对较低;剑叶面积、穗下节长、穗数/m2、颖花量、实粒数/穗、单株产量、单株干重和千粒重均与产量呈显著或极显著相关关系;入选品种主要特征性状为产量、实粒数/穗、单株穗数、株高、穗数/m2.以上结果说明,在淮北地区气候条件下,超高产育种应采取在单位面积足穗基础上,提高每穗粒数和千粒重的育种策略.
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| 关 键 词： | 水稻 经济性状 遗传分析 超高产育种 |
| 文章编号： | 1000-2049(2000)-01-0012-04 |
| 修稿时间： | 1999年10月26 |
GENETIC ANALYSIS OF THE MAJOR ECONOMICAL CHARACTERSIN THE HIGH-YIELD RICE CULTIVARS AND THESUPERHIGH-YIELD BREEDING |
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| XU Da\|yong\,LIU Hong\|fu\,DU Yong\,XU Min\|quan\,CHEN Huan\|gan\.GENETIC ANALYSIS OF THE MAJOR ECONOMICAL CHARACTERSIN THE HIGH-YIELD RICE CULTIVARS AND THESUPERHIGH-YIELD BREEDING[J].Journal of Yangzhou University:Agricultural and Life Science Edition,2000,21(1):12-15. |
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| Authors: | XU Da\|yong\ LIU Hong\|fu\ DU Yong\ XU Min\|quan\ CHEN Huan\|gan\ |
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| Institution: | XU Da\|yong\ 1 LIU Hong\|fu\ 2 DU Yong\ 1 XU Min\|quan\ 1 CHEN Huan\|gan\ 1 |
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| Abstract: | The genetic parameters of the 12 economical characters for 20 high\|yield cultivars were estimated in 1997 and their principal components were analysed. The results indicated: the heritabilities in the broad sense of the ears/m\ 2, yield/plot, plant height, weight/1000 grains were comparative high, those of the spikelet numbers/ear, dry weight/plant and ripped grains percentage were low. The yield was found to have extremely significantly or significantly correlation with flag leaf area, length of uppermost internode, ear numbers/m\ 2, spikelete numbers/ear. Filled grain numbers/ear, yield/plant, dry weight/plant and weight/1000 grains. The selected principal factors were yield, filled grain numbers/ear, ear numbers/plant, plant height, ear numbers/m\ 2. The results suggested that the selection of the superhigh\|yield rice varieties should increase the grain numbers/ear and weight/1000 grains, based on the more ears/m\ 2. |
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| Keywords: | rice economical characters genetic analysis superhigh\|yield breeding |
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