【摘要】 以对大豆食心虫不同抗感材料8004、合丰25、8604、1068、9001、85164、黄宝珠和国育100-4大豆品种(系)为亲本,组配抗×中(8004×合丰25)、中×感(9001×85164)和感×抗(黄宝珠×国育100-4)杂交组合,对F2代性状的相关性[x1]分析结果表明,大豆食心虫虫食率与虫食粒数、节数、单株粒数、单株粒重、百粒重和茎杆强度呈极显著正相关。中×感(9001×85164)、感×抗(黄宝珠×国育100-4)杂交组合中虫食率与荚皮颜色呈极显著的正相关,在感×抗(黄宝珠×国育100-4)杂交组合中发现,虫食率与茸毛密度正相关性极强。由此表明,矮杆主茎节数少、单株粒数少、籽粒小、直立性强不倒伏、荚皮颜色浅、茸毛密度小的大豆品种不利于大豆食心虫的产卵和危害,有降低虫食率的趋势。更多还原

【Abstract】 Three hybridized combinations of soybean,whose parents come from 8004,Hefeng 25,9001,85164,Huang Baozhu and Guoyu 100-4,were studied on genetic variation of characters in F₂ generation.The results showed that the percentage of damaged seeds had significant positive correlation with the number of damaged seeds,the number of nods in main stem,the number of seeds per plant,the seed weight per plant,the weight of 100 seeds and the intensity of haulm;that the percentage of damaged seeds had significant positive correlation with the color of pod coat in hybridized combinations of 9001×85164 and Huang Baozhu×GuoYu100-4;that the percentage of damaged seeds had significant positive correlation with the density of pubescence in hybridized combinations of Huang Baozhu×GuoYu100-4.So we could make a conclusion that the kind of soybean which had dwarf haulm,minor nods in main stem,small seeds,strong erect trait and lodging resistance,light color of pod coat,low density of pubescence,didn’t facilitate egg deposition and damage of soybean pod borer,and reduced the percentage of damaged seeds effectively.更多还原