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通过在琼脂培养基上调查培养材料小麦初生种子根的向地性遗传方式,并测定了农林58(根生长大倾角)和中国春(根生长小倾角)杂交组合F_1和F_2植株根生长倾角。结果表明,农林58、中国春和F_1植株根生长倾角平均数和标准离差分别为:68±21°、16±14°和15±21°.F_2植株相应值分布从0°到90°.F_2植株的小倾角(0—50°)和大倾角(60—90°)分离值符合3∶1比例。因此,与根生长小倾角相联系的有限向地性被认为由单显性基因控制。看来似乎影响根分布方式的根向地性品种间差异已经在小麦(Rufelt,1969,Oyanagi等,1991)和水稻(Ueno和Sato,1989)上观察到.并报道水稻冠根向地性由2个隐性基因控制(Ueno,1989)。然而,小麦种子根向地性遗传方式尚未见报道.本研究观察了琼脂培养基上来自农林58(表现大值)和中国春(表现小值)杂交组合F_1和F_2植株初生种子根生长倾角.
The geotrophic mode of primary wheat seedling roots was investigated on agar medium, and the root dip of plant growth of F_1 and F_2 was determined in the cross between Agri-forestry 58 (large root growth) and Chinese spring (small root growth). The results showed that the mean and standard deviation of root growth inclination were 68 ± 21 °, 16 ± 14 ° and 15 ± 21 °, respectively, and the corresponding values of distribution of F2 plants ranged from 0 ° to 90 °. The separation of F_2 plants from small dip (0-50 °) and large dip (60-90 °) fitted the 3: 1 ratio. Therefore, the limited locality associated with a small root growth angle is considered to be dominated by monogenic genes. Differences in root-appearing species that appear to affect root distribution seem to have been observed in wheat (Rufelt, 1969, Oyanagi et al., 1991) and rice (Ueno and Sato, 1989) Two recessive gene control (Ueno, 1989). However, it has not been reported that the genetic basis of wheat germplasm (Genetics and Genetics) has been reported.In this study, the growth dip of primary seed roots from F_1 and F_2 hybrids on agar medium was observed.