南方农业学报Issue(2)：199-203,5.DOI:10.3969/jissn.2095-1191.2015.2.199
花粉直感效应对桂单0810百粒重的影响
Xenia effects of several maize cultivars on 100-grain weight of Guidan 0810
摘要
Abstract
Objective]The xenia effects of different maize cultivars on 100-grain weight of Guidan 0810 was stud-ied in order to lay the foundation on enhancing yield potential of Guidan 0810 . [Method]With randomized completed block design ( RCBD ) , 8 maize cultivars were used as male parent to cross with maize cultivar Guidan 0810 . Mean-while, self- and sib-pollination were conducted on all the 9 maize cultivars, respectively. After harvesting, the 100-grain weight(HGW) of self-, sib-, cross-pollination cobs was measured, respectively. [Result]There existed varying degrees differences in HGW between self- and sib-pollination cob for the same cultivar. The self-pollination HGW of two cultivars viz., Yahang 639 and Pacific 98 were 5.47% and 5.36% higher than that of sib-pollination(P<0.01), respectively. The self-pollination HGW of Chenyu 969 , Guidan 0810 and Dekarl 008 were increased by 0.35%-2.64%as compared to their sib-pollination. The self-pollination HGW of other varieties were decreased by 0.19%-2.11% as compared to sib-pollination. All the 8 maize cultivars showed the positive xenia effect and could enhance the HGW of Guidan 0810. Out of which, 5 cultivars viz., Zhengda 808, Pacific 98, Xianda 901, Chenyu 969 and Yahang 639, could extremely significantly increase the HGW of Guidan 0810. The F0 heterosis(1.31%-12.70%) was found in HWG among different crossing combinations of Guidan 0810 , and mid-parent heterosis were found in 7 crossing com-binations. The combination Guidan 0810×Zhengda 808 presented the best heterosis, its HWG was 12.70% and 15.68%higher than that of female parent Guidan 0810 and male parent Zhengda 808 , and the mid-parent heterosis was found the highest (14.17%).[Conclusion]Maize cultivar Guidan 0810 could easily fertilize with pollen grains from external maize cultivars. Its grain weight could be increased resulting from xenia effect , and showed the F0 heterosis and hetero-beltiosis; this xenia effect was depended on male parent genotype.关键词
桂单0810/花粉直感效应/百粒重/当代杂种优势/超亲优势/中亲优势Key words
Guidan 0810/xenia effect/100-grain weight/F0 heterosis/heterobeltiosis/mid-parent heterosis分类
农业科技引用本文复制引用
何静丹,仁来,苏月贵,田树云,何雪银,苏义成..花粉直感效应对桂单0810百粒重的影响[J].南方农业学报,2015,(2):199-203,5.基金项目
广西科学研究与技术开发计划项目（桂科转1346004-16）；广西农业科学院科技发展基金项目［桂农科2014JQ14，桂农科2013YZ25，农成转201303（A），桂农科2013JQ29］ （）
