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作物学报 ›› 2010, Vol. 36 ›› Issue (1): 28-35.doi: 10.3724/SP.J.1006.2010.00028

• 作物遗传育种·种质资源·分子遗传学 • 上一篇    下一篇

四个热带亚热带玉米群体开花期性状对混合选择的直接选择响应

张德贵1,2,李新海2,李明顺2,谢传晓2,郝转芳2,白丽2,张世煌2   

  1. 1四川农业大学玉米研究所，四川雅安625014；2中国农业科学院作物科学研究所，北京100081
  • 收稿日期:2009-07-22 修回日期:2009-10-08 出版日期:2010-01-12 网络出版日期:2009-11-17
  • 通讯作者: 潘光堂, E-mail: pangt@sicau.edu.cn
  • 基金资助:

    本研究由引进国际先进农业科学技术计划（948计划）项目资助。

Direct Selection Response for Flowering Traits in Four Tropical and Subtropical Maize Populations by Mass Selection

ZHANG De-Gui1,2,LI Xin-Hai2,LI Ming-Shun2,XIE Chuan-Xiao2,HAO Zhuan-Fang2,BAI Li2,ZHANG Shi-Huang2,PAN Guang-Tang1*   

  1. 1Maize Research Institute，Sichuan Agricultural University，Ya’an 625014，China；2Institute of Crop Sciences，Chinese Academy of Agricultural Sciences，Beijing 100081，China
  • Received:2009-07-22 Revised:2009-10-08 Published:2010-01-12 Published online:2009-11-17
  • Contact: PAM Guang-Tang, E-mail: pangt@sicau.edu.cn

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摘要：

通过两年两点试验，对4个热带亚热带群体的原始群体C0和经适应性改良后的各轮次群体(C1~C4)开花期性状的选择响应进行了研究。结果表明，海南点不同轮次多数开花性状差异不显著；在北京点，热带群体POB43和SUWAN-1的抽丝期分别从99.2 d和90.7 d缩短为79.5 d和76.2 d，平均每轮提前4.9 d和3.6 d，散粉期从90.8 d和77.8 d缩短为76.7 d和74.7 d，平均每轮提前3.5 d和0.8 d，抽丝散粉间隔(ASI)分别从8.3 d和12.8 d缩短为2.8 d和3.5 d，平均每轮缩短1.4 d和2.3 d；亚热带群体POB69和POB70的抽丝期分别从78.3 d和81.8 d缩短为69.2 d和69.0 d，平均每轮提前2.3 d和3.2 d，散粉期分别从71.0 d和72.5 d缩短为67.5 d和68.0 d，平均每轮提前0.9 d和1.1 d，抽丝至散粉间隔(ASI)分别从7.3 d和9.3 d缩短为1.7 d和2.7 d，平均每轮缩短为1.4 d和1.7 d。抽丝期和散粉期的选择响应幅度不同，散粉期提前的幅度较小，因而散粉至抽丝间隔(ASI)缩短。开花期性状的选择响应和RD值随改良轮次增加而减少，说明控制双亲授粉的混合选择法有效地改良了供试群体在温带的适应性。

关键词: 热带群体, 亚热带群体, 混合选择, 选择响应, 光周期敏感性

Abstract:

Selection responses were characterized among 4 circles in 2 tropical populations and 2 subtropical populations at two locations during 2006–2007. Analysis of variance indicated that the difference for most flowering traits was not significant among different cirles in the same population in Hainan, while significant progress (P<0.05) was available among populations for flowering traits under evaluation in Beijing. The mean days to silking for tropical POB43 and SUWAN-1 advanced respectively from 99.2 and 90.7 to 79.5 and 76.2, with average of 4.9 and 3.6 in advance per circle, days to anthesis advanced respectively from 90.8 and 77.8 to 76.7 and 74.7, with average of 3.5 and 0.8 in advance per circle, and the mean ASI advanced respectively from 8.3 and 12.8 days to 2.8 and 3.5, averaged 1.4 and 2.3 days in advance per circle. The mean days to silking for subtropical POB69 and POB70 advanced respectively from 78.3 and 81.8 to 69.2 and 69.0, with average of 2.3 and 3.2 in advance per circle, days to anthesis advanced respectively from 71.0 and 72.5 to 67.5 and 68.0 with average of 0.9 and 7.0 days in advance per circle, and the mean ASI advanced respectively from 7.3 and 9.3 days to 1.7 and 2.7 days, averaged 1.4 and 1.7 days in advance per circle. The selection responses obtained in this paper indicated that controlling bi-parental mass selection effectively improved the adaptability of the four tropical and subtropical maize populations.

Key words: Tropical maize, Subtropical maize, Mass selection, Selection response, Photoperiod-sensitive

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