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首页> 外文会议>5th International Workshop on Management of the Diamondback Moth and Other Crucifer Insect Pests(第五届小菜蛾及其他十字花科蔬菜害虫治理国际研讨会) >A host shift of diamondback moth from crucifers to peas：Life history traits and genetic mechanisms
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A host shift of diamondback moth from crucifers to peas：Life history traits and genetic mechanisms

机译：小菜蛾从十字花科到豌豆的宿主转移：生活史特征和遗传机制

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The diamondback moth(DBM)iS a well-known specialist on cruciferous plants.However，in 2001，a host shift to commercially-grown sugar pea was reported from Kenya. To study this phenomenon further，we compared five laboratory strains，including the pea-adapted strain from Kenya(DBM-P). In feeding trials on cabbage and pea，DBM-P larvae performed comparably well on the two hosts，whereas larvae of the other strains could not survive on pea. The genetic diversity within and between 10-12 individuals of the five strains was investigated using microsatellites and AFLPs.Statistical analyses of the AFLP data revealed hish genetic diversity between(FST=0.297)and within the strains. To study the inheritance of“pea-feeding”，we conducted single pair matings between DBM-P strain and a cabbage-adapted strain followed by a backcross to either the cabbage(BC Ⅰ)or the pea-adapted(BCⅡ)strain or by intercrossing the F1 to produce an F2. The results suggest recessive genes to be responsible for the trait“feeding ability on pea”.
机译：小菜蛾是著名的十字花科植物专家。但是，2001年，肯尼亚报道了一种向商业种植豌豆转变的宿主。为了进一步研究这种现象，我们比较了五个实验室菌株，包括肯尼亚的豌豆适应菌株（DBM-P）。在白菜和豌豆的饲喂试验中，DBM-P幼虫在两个寄主上的表现相当好，而其他菌株的幼虫无法在豌豆上存活。利用微卫星和AFLPs对5个菌株的10-12个个体之间及其之间的遗传多样性进行了研究。对AFLP数据的统计分析显示了（FST = 0.297）和菌株内部的his遗传多样性。为了研究“饲喂豌豆”的遗传，我们在DBM-P菌株和适应白菜的菌株之间进行单对交配，然后回交至甘蓝（BCⅠ）或适应豌豆（BCⅡ）的菌株或通过与F1交叉产生F2。结果表明隐性基因与“豌豆的摄食能力”有关。

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