摘要
运用经典的杂交法，采用剂量对数-死亡概率值回归分析法，利用室内选育的抗性倍数为65．96的桔小实蝇抗敌百虫品系和敏感品系，研究桔小实蝇对敌百虫的抗性形式遗传．结果表明，杂交F1代的显性度均在0～1的范围内，说明桔小实蝇对敌百虫的抗性由不完全显性基因控制；遗传因子数测定以及进一步的卡方检验可知∑xF2^2和∑xBG3^2值分别为20．964和19．684，均大于x0.05,9^2（16．919），表明桔小实蝇对敌百虫的抗性属多基因控制；杂交后代其雌雄性比近似保持在1：1，说明桔小实蝇对敌百虫的抗性属常染色体控制．
The inheritance mode of Bactrocera dorsalis （Hendel） resistance to trichlorphon was evaluated by log dosage-probit mortality curves constructed from the response of adult to trichlorphon treatment. The insects used for study were taken from laboratory reared susceptible and resistant strains. The resistant strain exhibited over 65.96-fold of resistance to trichlorphon as compared with the susceptible strain. The results of genetic analysis indicated that the dominance degrees of F1 generation were 0 to 1, which suggested that the major gene involved was incompletely dominant. The results from x^2 analysis showed that the resistance of the insect to trichlorphon appeared to be controlled by two or more autosomal genes. The sex ration of Fl generation was about 1： 1, which showed that the resistant genetics to trichlorphon was autosomal.
出处
《华南农业大学学报》
CAS
CSCD
北大核心
2008年第1期39-43,共5页
Journal of South China Agricultural University
基金
广东省科技计划项目(2002B21602032004A20401002)
农业部项目(农农植保字[2006]003号)
广东省桔小实蝇为害控制专项(粤财农[2003]97[2004]92[2005]358)
关键词
桔小实蝇
敌百虫
抗药性
不完全显性
遗传
Bactrocera dorsalis
trichlorphon
resistance
imcomplete dominance
inheritance
