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为了育成抗黑尾叶蝉的粳型品种,有必要与抗性基因源的籼型品种进行多次回交。育成初期所获得的品系对黑尾叶蝉的抗生作用——虫的生存率、羽化率、虫体重下降,若虫期的延长等——比基因源弱,因此有必要弄清楚如果连续回交的话,抗生作用的程度会不会明显下降。此外,似乎抗生作用弱的品系,其具有抗BPL_1和bPL_2基因的品系之间有差异,这一点也需要证实,所以用含有近似等基因品系的各种育成阶段的品系,对两个基因型分不同要素来探讨对黑尾
In order to develop japonica rice varieties resistant to black-leafhopper, it is necessary to carry out multiple backcrossings with the indica-type varieties of resistant gene sources. The antiseptic effect of the line obtained from early breeding on the black-tailed leafhopper, such as the survival rate of the insect, the emergence rate, the drop in body weight, the prolongation of the nymphal stage, etc., is weaker than that of the gene source. Therefore, it is necessary to find out if the line , The extent of antibiotic effects will not significantly decline. In addition, it seems to be corroborated by the fact that lines that appear to be weakly resistant to antibiotics, which have lines with resistance to the BPL_1 and bPL_2 genes, need to be validated, so lines of various genotyping stages with similar isogenic lines Different elements to explore the black tail