| 美国玉米种质改良系的应用潜力研究 |
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| 引用本文： | 李继竹,胡洋,张焕欣,金晓蕾,吴玥,杨伟光.美国玉米种质改良系的应用潜力研究[J].吉林农业大学学报,2012,34(1):19-23. |
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| 作者姓名： | 李继竹 胡洋 张焕欣 金晓蕾 吴玥 杨伟光 |
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| 作者单位： | 吉林农业大学农学院,长春,130118 |
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| 基金项目： | 转基因生物新品种培育重大专项(2009ZX08003-024B)，农业部先进农业科学技术(2009-Z1)，吉林省农委农业新品种研发项目（2009年） |
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| 摘 要： | 采用NCⅡ设计,在6万株/hm2密度下,由5个美国种质的遗传改良系与旅大红骨群自交系配制25个玉米杂交组合,对其单株产量的杂种优势和穗部性状的配合力进行了研究.结果表明:J1218的单株产量一般配合力高,组配出4个高产组合,是改良成功的自交系.J1405和J1207单株产量的一般配合力较低,但各组配出1个高产组合,具有一定的利用价值.改良系×旅大红骨模式杂交种中有3个组合的产量比对照“郑单958”高10％以上,生育期均长于对照,说明该模式在高产密植型杂交种选育中具有较大应用潜力.在实际育种中PA种质可对美国玉米种质进行遗传改良.
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| 关 键 词： | 玉米 美国种质 改良系 应用潜力 |
| 收稿时间： | 2010-07-11 |
Study on Potential Utilization of Improved Maize lines of American Germplasm |
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| LI Ji-zhu
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HU Yang
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ZHANG Huan-xin
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JIN Xiao-lei
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WU Yue
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YANG Wei-guang.Study on Potential Utilization of Improved Maize lines of American Germplasm[J].Journal of Jilin Agricultural University,2012,34(1):19-23. |
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| Authors: | LI Ji-zhu HU Yang ZHANG Huan-xin JIN Xiao-lei WU Yue YANG Wei-guang |
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| Institution: | College of Agronomy,Jilin Agricultural University,Changchun 130118,China |
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| Abstract: | In the study,five improved maize inbreds were crossed with five testers which are key inbreds of Lvdahonggu group by NC-Ⅱ mating design.The potential utilization of improved lines was evaluated based on the analysis of heterosis and combining ability of ear traits in 60 000 plants per hectare.The results showed that inbred lines J1218 had higher general combining ability(GCA) on kernel yield per plant(KYPP),and it crossed four high yield hybridized combinations,and thus it was a successful improved line.The GCA of KYPP of J1405 and J1207 was lower,but they crossed a high yield combination respectively.Thus,the two lines may be of some value in use.The combination pattern of improved inbred×Lvdahonggu group was in accordance with the heterotic pattern of PA×Lvdahonggu group.It could be used to breed maize variety with high yield and dense planting.In breeding,the PA inbred could be used to improve America germplasm. |
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| Keywords: | maize American germplasm improved line potential utilization |
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