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中国农学通报

中国农学通报 ›› 2013, Vol. 29 ›› Issue (29): 6-13.doi: 10.11924/j.issn.1000-6850.2013-0515

• 畜牧 动物医学 蚕 蜂 • 上一篇    下一篇

25个饲草高粱恢复系主要农艺性状及其抗旱性的相关分析

吕鑫 张福耀 平俊爱 杜志宏 李慧明 田兆祥 杨婷婷 乔婧   

  • 收稿日期:2013-02-28 修回日期:2013-04-17 出版日期:2013-10-15 发布日期:2013-10-15
  • 基金资助:
    现代农业产业技术体系专项基金;山西省回国留学人员科研资助项目;山西省农科院院育种工程项目

Correlation Analysis of 25 Main Agronomic Characters and Drought Resistance in Forage Sorghum Restorer Lines

  • Received:2013-02-28 Revised:2013-04-17 Online:2013-10-15 Published:2013-10-15

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摘要： 为了在饲草高粱抗旱育种研究中，对现有饲草高粱种质进行抗旱性研究，选择产量高和稳产性好的同时，对其他性状的选择提供了科学依据和种质材料。对25份饲草高粱恢复系材料，采用对饲草高粱抗旱种质同时在水、旱地种植，对其进行抗旱性鉴定，并调查、计算比较出9个性状值水旱地之间的差异。结果表明，以生物产量作为最主要的指标，水旱地之间差值最大达到84700.00 kg/hm2，最小为6600.00 kg/hm2，旱地平均减产42259.20 kg/hm2。计算出8个性状值的抗旱系数和抗旱指数，生物产量抗旱系数范围0.4167~0.9603，抗旱指数范围0.2483~1.5084，为选择抗旱品种提供了科学依据。估算出在水、旱地中，生物产量分别和7个性状值之间的遗传相关系数：旱地中，生物产量与生育期、株高、茎粗、分蘖数等4个性状呈正相关，遗传相关系数为0.1576~0.5956，生物产量与穗长、穗宽和千粒重3个性状呈负相关，遗传相关系数为-0.2563~-0.0870；水地中，生物产量与生育期、株高、茎粗、分蘖数等4个性状呈正相关，遗传相关系数为0.1288~0.3984，生物产量与穗长、穗宽和千粒重3个性状呈负相关，遗传相关系数为-0.4485~-0.0098。通过试验研究得出以上数据，体现了在水旱地中生物产量与7个性状的关联性。

关键词: 种子发芽, 种子发芽

Abstract: These test data for forage sorghum restorer lines drought resisting breeding research to provide the scientific basis, especially the high biological yield in forage sorghum restorer lines, stable biological yield good, chooses other related character. 25 different forage sorghum restorer lines were selected as experimental material. Then planted them in irrigated and dry lands, and investigated 9 character values of forage sorghum restorer lines, compared with 9 character values in difference of irrigated and dry lands. Experimental results showed that, the biological yield was the uppermost index. The difference between irrigated and drought to the maximum was 84700.00 kg/hm2. And the smallest difference was 6600.00 kg/hm2. The average biological yield reduced 42259.20 kg/hm2 in drought land, obtained drought resisting coefficient and drought resisting index of 8 character values. The biological yield drought resisting coefficient scoped 0.4167-0.9603, drought resisting index scoped 0.2483-1.5084. All these provided the basis for the selection of drought tolerant varieties. Estimated value of 7 traits to the genetic correlation coefficient of irrigated and dry lands, the biological yield of dry land and growth period, plant height, stem diameter and tiller number other 4 traits of the genetic correlation coefficient was positive, correlation coefficient scope 0.1576-0.5956. The biological yield correlated negative with ear length, ear diameter and thousand seed weight of genetic traits. Correlation coefficient scoped -0.2563 - -0.0870. The biological yield of irrigated land and growth period, plant height, stem diameter and tiller number other 4 traits of the genetic correlation coefficient was positive, correlation coefficient scope 0.1288-0.3984. The biological yield correlated negative with ear length, ear diameter and thousand seed weight of genetic traits. Correlation coefficient scoped -0.4485 - -0.0098. All data between the biological yield and 7 characters reflected the relatedness of the irrigated and dry lands.

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