加拿大魁北克玉米群体杂交选系性状评价及遗传优势研究 [2]
论文作者:英语论文网论文属性:职称论文 Scholarship Papers登出时间:2012-02-15编辑:kalila点击率:6203
论文字数:6654论文编号:org201202151015089171语种:英语 English地区:加拿大价格:免费论文
关键词:玉米加拿大群体杂交SSR标记遗传maizecanada populationderived linessr markergenetic diversityheterosis
摘要:加拿大魁北克玉米群体杂交选系性状评价及遗传优势研究-Study on Trait Evaluation, Genetic Diversity and the Heterotic Relationship of Hybrid Selections of Canada Maize Population.
ed into 6 clusters based on two methods named Genetic Similarity Efficient and Model, namely, Reid population,such as SW1183(B73×EP8);Lancaster population, such as SW1084(MO17×EP3); PA population, such as SW1249(dong237×EP9); Dian11A population, such as SW1236(dian11A×EP3); Dahuang population,such as SW1202(dong46×EP7); Tangsipingtou population, such as SW1289(huangzaosi×EP7).5、the derived lines with excellent GCA effect of 13 agriculture traits and traits related to production included SW1183(B73×EP8),SW1030(8112×EP7)and so on;The combination with higher SCA effect of single plant production were JinQi×SW1030(8112×EP7), Dong46×SW1183(B73×EP8) and so on.6、The stronger heterosis in production of single plant existed between 49 derived lines and partial early elite inbreds in Heilongjiang province.The combination with single plant production over CK Kedan10 accounted for 24.5% of all the combinations, combinations over Suiyu7 maize 19.6%, combinations over Demeiya 1 14.5%. Combinations with single plant production heterosis under the condition of circumstances included dong46×SW1183(B73×EP8)、dian11A×SW1052(dan340×EP15)、合344×SW1052(dan340×EP15)、jingqi×SW1030(8112×EP7)、合344×SW1289(huangzaosi×EP7)、K10×SW1271(huangzaosi×EP14)、dian11A×SW1175(huangzaosi×EP1)、KL298×SW1289(huangzaosi×EP7)、dian11A×SW1072(MO17×EP6)、K10×SW1064(longkang11×EP15)。7、49 lines derived from Canada populations were classificated into 7 clusters according to the SCA effect of average single plant production at two locations, namely, Lancaster population including SW1084(MO17×EP3);Reid population including SW1030(8112×EP7);Tangsipingtou population including SW1289(huangzaosi×EP7); Nvdahonggu population including SW1052(dan340×EP15); PA population including SW1210(dong237×EP23); Dian11A population including SW1236(dian11A×EP3); Dahuang population including SW1156(dong46×EP11);. The classification was consistent with the digree of derived lines.8、According to the analysis of heterosis relationship, main utilization path of heterosis for the lines derived from Canada had Dian11A population×SW1052(Dan340×EP15),SW1175(Huangzhao4×EP1),SW1072(MO17×EP6),Reid×SW1271(Huangzhao4×EP14),SW1064(Longkang11×EP15), Lancaster×SW1289(Huangzhao4×EP7), SW1052(Dan340×EP15). 9、Innovation of this research was as follows: the resistance to maize head smut and northern leaf blight of 151 lines derived from Canada maize populations were evaluated with artifical innoclution in the first time in China; main agricultrue traits and traits related to production of 151 derived lines were evaluated compositively for the first time, and 40 excellent derived lines with good agriculture and production performance were obtained; 151 derived lines with unknown digrees were clustered in the first time; the combining ability and the path of utilizing heterosis of 49 derived lines were investigated and two derived lines which resisted head smut and northern leaf blight synchronously with good agriculture traits and high combining ability were explored from 151 lines derived from Canada maize populations, namely, SW1084(MO17×EP3)and SW1064(Longkang11×EP15).
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