| 大豆主要农艺性状的遗传解析 |
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| 引用本文： | 刘东,齐婉冬,冯燕,赵青松,张孟臣,杨春燕,杨永庆,廖红.大豆主要农艺性状的遗传解析[J].大豆科学,2018(2):165-172. |
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| 作者姓名： | 刘东 齐婉冬 冯燕 赵青松 张孟臣 杨春燕 杨永庆 廖红 |
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| 作者单位： | 华南农业大学根系生物学研究中心,广东广州510000;福建农林大学根系生物学研究中心/作物科学学院,福建福州350002
河北省农林科学院粮油作物研究所/河北省作物遗传育种实验室/国家大豆改良中心石家庄分中心/农业部黄淮海大豆生物学与遗传育种重点实验室,河北石家庄,050035
福建农林大学根系生物学研究中心/作物科学学院,福建福州,350002 |
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| 基金项目： | 国家重点研发计划，国家产业技术体系，河北省重点研发计划 |
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| 摘 要： | 利用亲本冀豆12(高蛋白)和冀nf58(高油)及其175份F_(9∶11)重组自交系(RIL)材料,对大豆12个主要农艺性状进行了相关性和遗传分析,以期初步解析影响产量的主要因素。结果显示:亲本在株高、主茎节数、分枝数、百粒重、油分含量、蛋白含量和单株粒重7个性状上具有显著差异。在RIL群体中,12个农艺性状均表现为典型的数量性状特征,且具有相对较高的遗传率。其中,株高的遗传率最高(0.98),茎干重最低(0.63)。除3个性状(油分、蛋白含量和百粒重)外,其它9个性状之间呈现极显著的正相关,相关系数为0.30~0.90;蛋白含量与6个性状显著负相关,但与百粒重显著正相关。各性状与单株粒重相关性依次为:单株粒数单株荚数叶干重株高分枝数叶片数茎干重、主茎节数百粒重蛋白含量油分含量。选取19个单产最高的家系材料进一步分析表明,所测试的9个农艺性状主要遗传于母本冀豆12,而株高和主茎节数受到父本冀nf58的改良,说明通过聚合不同品种优异性状仍有提高品种产量的潜力。本研究结果可为培育高产优质大豆品种提供理论基础。
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| 关 键 词： | 遗传率 RIL群体 相关性 高产家系 数量性状 Heritability RIL population Correlation High-yielding family Quantitative traits |
Characterization of the Genetic Basis of Main Agronomic Traits in Soybean |
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| LIU Dong,QI Wan-dong,FENG Yan,ZHAO Qing-song,ZHANG Meng-chen,YANG Chun-yan,YANG Yong-qing,LIAO Hong.Characterization of the Genetic Basis of Main Agronomic Traits in Soybean[J].Soybean Science,2018(2):165-172. |
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| Authors: | LIU Dong QI Wan-dong FENG Yan ZHAO Qing-song ZHANG Meng-chen YANG Chun-yan YANG Yong-qing LIAO Hong |
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| Abstract: | In order to determine the main factors affecting soybean yield,two soybean genotypes,Jidou 12 (high protein content) and Ji nf58 (high oil content),and their 175 F9∶11 recombinant inbred lines (RILs) were evaluated for the inheritance and correlation among 12 main agronomic traits.The results indicated that the parents significantly differed in plant height,node number,branch number,grain yield,oil content,protein content and seed weight per plant.Among RILs,12 agronomic traits showed typical properties as quantitative traits with high heritability,and the hb2 of plant height was the highest as 0.98,while the h2b of stem dry weight was the lowest as 0.63.Except for three traits (protein,oil content and 100-seed weight),the other nine traits significantly positively correlated to each other with the correlation efficiency ranged from 0.30 ～ 0.90.Protein content significantly negatively correlated to 6 traits,but significantly positively correlated to 100-seed weight.The traits successively correlated to grain yield were:seed number ＞ pod number ＞ leaf dry weight ＞ plant height ＞ branch number ＞ leaf number ＞ stem dry weight and node number ＞ 100-seed weight ＞ protein content ＞ oil content.Further analysis using 19 lines with the highest yield found that nine tested agronomic traits inherited from Jidou 12,but plant height and node number were improved by Ji nf58,suggesting that there were potentials to increase yield by integrating excellent characteristics from different varieties.The results could provide a theoretical basis for breeding high yield and high quality soybean cultivars. |
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