| 西南春玉米MCO-3群体主要农艺性状遗传增益分析 |
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| 引用本文： | 邱贵兰,李燕,李红梅,何立群,胡美琳,赵后娟,杜林,李晓叶,吴元奇,马孝玲,唐海涛.西南春玉米MCO-3群体主要农艺性状遗传增益分析[J].玉米科学,2023,31(2):9-15. |
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| 作者姓名： | 邱贵兰 李燕 李红梅 何立群 胡美琳 赵后娟 杜林 李晓叶 吴元奇 马孝玲 唐海涛 |
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| 作者单位： | 四川省农业科学院作物研究所, 成都 610066;四川农业大学玉米研究所, 成都 610066;景洪市种子管理站, 云南 景洪 666100;西双版纳傣族自治州农业科学研究所, 云南 景洪 666100;西双版纳州农产品质量安全检测中心, 云南 景洪 666100 |
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| 基金项目： | 四川省重点研发项目“突破性玉米及高粱育种材料和方法创新及新品种选育-育种攻关项目”(2021YFYZ0017)、四川省农业科学院种源卡脖子“1+3”关键技术攻关项目-环境友好型绿色玉米新品种培育及产业化、现代农业产业技术体系四川玉米创新团队“适宜夏播机械化生产玉米杂交种选育”、粮油作物绿色种质创新与遗传改良四川省重点实验室项目 |
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| 摘 要： | 以西南生态区9个骨干自交系为材料，建立西南春玉米基础群体MCO-0，用测交法和后代鉴定法对其进行改良，对其不同世代的群体产量及产量性状、穗部性状、株型性状增益分析。结果表明，以MCO-0为基础群体，经过两轮的改良，MCO-2群体主要目标性状单株产量、穗行数等均有所增益，穗长、轴粗等为负增益。MCO-2经过一轮改良后的MCO-3群体株高、穗位高等有所增益，穗长、穗粗等为负增益。以MCO-1相比，MCO-3主要目标性状单株产量、秃尖长、ASI均有所增益，其余性状有的轮次有所增益，有的轮次为负增益。
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| 关 键 词： | 玉米 群体改良 变异系数 遗传增益 |
| 收稿时间： | 2022/3/24 0:00:00 |
Genetic Gain Analysis of Main Agronomic Characters of Southwest Spring Maize MCO-3 Population |
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| QIU Gui-lan,LI Yan,LI Hong-mei,HE Li-qun,HU Mei-lin,ZHAO Hou-juan,DU Lin,LI Xiao-ye,WU Yuan-qi,MA Xiao-ling,TANG Hai-tao.Genetic Gain Analysis of Main Agronomic Characters of Southwest Spring Maize MCO-3 Population[J].Journal of Maize Sciences,2023,31(2):9-15. |
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| Authors: | QIU Gui-lan LI Yan LI Hong-mei HE Li-qun HU Mei-lin ZHAO Hou-juan DU Lin LI Xiao-ye WU Yuan-qi MA Xiao-ling TANG Hai-tao |
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| Institution: | Crop Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu 610066;Maize Research Institute, Sichuan Agricultural University, Chengdu 610066;Jinghong Seed Management Station, Jinghong 666100;Institute of Agricultural Science, Xishuangbanna Dai Autonomous Prefecture, Jinghong 666100;Agricultural Products Quality and Safety Inspection Center, Xishuangbanna Prefecture, Jinghong 666100, China |
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| Abstract: | The nine inbred lines were used as materials to establish the basic population MCO-0 of southwest spring maize, which was improved by cross test and progeny identification. The population yield and yield traits, ear traits and plant type traits of different generations were analyzed. The results showed that MCO-0 was used as the basic population, and after a round of improvement, the main target characters of MCO-2 population including yield per plant, rows per ear, grains per row, anthesis-silking interval(ASI), etc. were all improved, while ear length, axis diameter, growth period, etc. were negative gains. After a round of improvement of MCO-2, the plant height, ear height, ASI, etc. were increased, while the ear length, ear diameter, number of grains per row, etc. were negative gains. After a round of improvement of MCO-2, the plant height, ear height, ASI, etc. were increased, while the length of ear, the thickness of ear, the number of grains per row, and the number of rows per ear were decreased. Compare with MCO-1, the main target traits of MCO-3 yield per plant, bald head length and ASI were all increased, and some of the other traits were increased or decreased in some rounds. |
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| Keywords: | Maize Population improvement Coefficient of variation Genetic gain |
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