WU Yu-shan,GONG Wan-zhuo,TAN Qian-jun,et al.Grey Correlation Degree Analysis of High Yield and High Quality Breeding of Soybean in Relay Strip Intercropping[J].Soybean Science,2015,34(04):565-570.[doi:10.11861/j.issn.1000-9841.2015.04.0565]
套作大豆高产优质育种的灰色关联分析
- Title:
- Grey Correlation Degree Analysis of High Yield and High Quality Breeding of Soybean in Relay Strip Intercropping
- Keywords:
- Soybean; Relay strip intercropping; Germplasm; Grey correlation degree analysis; High yield breeding; Quality breeding
- 文献标志码:
- A
- 摘要:
- 通过模拟“玉米-大豆”带状套作，采用灰色关联分析法分别分析了高产材料（≥1 500 kg.hm-2）的产量、高蛋白材料（≥50%）的蛋白质含量、高脂肪材料（≥20%）的脂肪含量与农艺性状的相关性。结果表明：3种类型大豆材料中，有6个农艺性状的变异系数都大于10%，特别是高脂肪材料的底荚高、分枝数和单株荚数的变异系数均大于30%，说明通过农艺性状的选择，提高大豆产量、蛋白质含量和脂肪含量的潜力较大。套作下高产材料、高蛋白材料和高脂肪材料与农艺性状的关联顺序分别为：生育期＞株高＞分枝数＞底荚高＞单株荚数＞百粒重＞主茎节数；生育期＞主茎节数＞株高＞底荚高＞分枝数＞百粒重＞单株荚数；生育期＞底荚高＞百粒重＞株高＞主茎节数＞分枝数＞单株荚数。套作下，高产材料的产量与蛋白质含量呈极显著正相关（r=0.873**），与脂肪含量呈显著负相关（r=-0.709*）；高蛋白材料的产量与蛋白质含量、高脂肪材料的产量与脂肪含量相关均不显著。以上结果表明，选择生育期长的品种可提高套作大豆产量、蛋白质及脂肪含量；选择分枝数、单株荚数较多和株高适中的品种可以同时提高套作大豆产量与蛋白质含量；加强对底荚高和百粒重的选择有望提高套作大豆脂肪含量。
- Abstract:
- Relationship between agronomic traits and yield, protein content and fat content is beneficial to screening high yield and quality soybean cultivars in relay strip intercropping.A field experiment was conducted on sixty-eight soybean germplasms by growing under shade (simulated the relay strip intercropping system), grey relational analysis were used to analyze the relationship between agronomic characteristics and yield, protein and fat contents of sixty-eight soybean germplasms.Variability analysis demonstated that the potential to increase yield, protein content and fat content was limited with the variation coefficient was less than 5%, respectively. There were six agronomic traits which the variation coefficient was greater than 10% in the rest of the eight agronomic traits. Especially the variation coefficient of the bottom of the pod, branch number and pod number per plant of high fat varieties was greater than 30%.The potential to increase soybean yield, protein content and fat content through the choice of agronomic traits was larger.Associated order of high yield varieties, high-protein varieties high-fat varieties and agronomic traits was as follows: Growth period＞ plant height＞ branches＞ bottom pod height＞ pod number＞ grain weight＞ nodes on main stem; Growth period＞ nodes on main stem ＞ plant height ＞ bottom pod height＞ branches＞ grain weight ＞ pods per plant; Growth period＞ bottom pod height ＞ grain weight ＞ plant height ＞ nodes on main stem ＞ branches＞ pods per plant. Correlation analysis showed that the yield of high yield varieties was significant positive correlated with protein content and significant negative correlation with fat content. There is no significant correlation between yield of high protein content varieties and protein content.And also there is no significant correlation between yield of high fat content varieties and fat content.These results suggest that soybean germplasms with long maturity groups can improve yield, protein content and fat content respectively. High yield and high protein can simultaneously be satisfied for soybean breeding with better adaptation to intercropping.Soybean germplasms with long maturity groups, more branch number and pod number, and moderate plant height can be used to breed high yield and high protein varieties. Selecting varieties with better suitable height of bottom pod and 100-seed weight is expected to increase soybean fat content.This research provides the basis theory for high yield and high quality breeding of soybean in relay strip intercropping.
参考文献/References:
［1］李文静.大豆进口步入6时代：2013进口6340万吨创纪录［N/OL］每日经济新闻，2014.01.17http://www-nbd-com-cn/articles/2014.01.17/804059-html(Li W J Soybean imports into the 6 era: 2013 imported a record 63-4 million tons［N/OL］ Daily Economy News, 2014.01.17)
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备注/Memo
基金项目：国家自然科学基金面上项目（31171476）。