玉米Tuxpeno-Reid和Suwan-Lancaster合成群体相互轮回选择效果及杂种优势研究
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摘要
采用属Reid自交系和属Tuxpeno自交系形成墨瑞C0以及用属Suwan自交系、Mo17和78599形成苏兰C0。两个群体在4次遗传平衡后按半同胞相互轮回选择后分别形成改良一轮的墨瑞C1和苏兰C1。经多点产量比较,墨瑞C1×苏兰C1比墨瑞C0×苏兰C0的产量提高7.84%,达到极显著水平,而两个群体本身的产量变化不显著。群体间的平均杂种优势也从改良前的9.86%提高到改良后的16.29%。根据SSR标记计算,相互轮回选择对群体间的遗传距离略有提高。
Two populations of Tuxpeno-Reid and Suwan-Lancaster were developed from five Reid and four Tuxpeno inbreds, six Suwan inbreds, Mo17 and 78599 by four times random mating respectively. After one cycle of reciprocal recurrent selection, mean yield of Tuxpeno-Reid(C0)×Suwan-Lancaster(C0) was increased highly significant from 8.064 kg per plot to 8.696 kg of Tuxpeno-Reid(C1)×Suwan-Lancaster(C1), and mid-parent heterosis increased from 9.86% to 16.29%, and genetic distance by SSR between two populations increased slightly.
Two populations of Tuxpeno-Reid and Suwan-Lancaster were developed from five Reid and four Tuxpeno inbreds, six Suwan inbreds, Mo17 and 78599 by four times random mating respectively. After one cycle of reciprocal recurrent selection, mean yield of Tuxpeno-Reid(C0)×Suwan-Lancaster(C0) was increased highly significant from 8.064 kg per plot to 8.696 kg of Tuxpeno-Reid(C1)×Suwan-Lancaster(C1), and mid-parent heterosis increased from 9.86% to 16.29%, and genetic distance by SSR between two populations increased slightly.
引文
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[2]陈泽辉,祝云芳,王安贵,等.玉米Tuxpeno和Suwan种质的改良研究[J].贵州农业科学,2010(2):1-4.
[3]张世煌,田清震,李明顺.玉米种质改良与相关理论研究进展[J].玉米科学,2006,14(1):1-6.
[4]哈洛威A R.玉米轮回选择的理论与实践[M].北京:农业出版社,1989.
[5]杨爽,库丽霞,孟庆雷,等.豫综5号玉米群体产量性状轮回选择改良效果分析[J].河南农业大学学报,2010(1):1-6.
[6]祝云芳,陈泽辉,郭向阳,等.玉米Suwan-1/Mo17改良系的配合力研究[J].贵州农业科学,2010(7):5-7.
[7]Sriwatan pongse S S,Ji nahyon,Vasal S K.Suwan-1:Maize from Thai-land to the World[M].MexiCO,D.F:CIMMYT.1993.
[8]常华璋.利用Suwan1改良Mo17的效果研究[J].吉林农业科学,2000,25(1):20-22.
[9]Hallauer A R,Miranda J B.Quantitative genetics in maize breeding[M].Ames,Iowa:Iowa State University Press,1981.
[10]Hallauer A R,Carena M J,Miranda J B.Quantitative genetics in maize breeding[M].Springer Press,2010.
[11]黄素华,滕文涛,王玉娟,等.利用SSR标记分析玉米轮回选择群体的遗传多样性[J].遗传学报,2004,31(1):73-80.
[12]魏昕,荣廷昭,潘光堂.墨白964群体5轮混回选择遗传变异的分子生物学研究[J].中国农业科学,2006,39(2):237-245.