Detailed studies were carried out using 00 insects in various temperatures. The weighed arithmatical mean of egg-laying 从00头个体中加权法算出在不同温度下的卵历期.—.7天,若虫期.7—0.7天,成虫历期变幅较大.0— . 天。
Examination for the expression of actin genes showed that BPH A can be found from the rd instar nymph,BPH D in nymphaRT PCR检测表明 :BPH A从 龄开始到成虫期都有常量表达 ; BPH B、BPH C、BPH E从 龄开始到成虫期都有表达 ;
In Hyadaphis erysimi pseudobrassicae (Davis), the ratio ranged 8.-9.7 (9 per cent fiducial limit) or 8.9-0.0 (99 per ce菜缢管蚜有翅若蚜出现前—天其比值为8.—9.7(9％置信限)或8.9—0.0 (99％置信限)。
In laboratory condition of . 0 - . 0℃, the period of egg stage lasts an average of . - . 7 days. Development through t在实验室 .0～.0℃的平均温度下,卵期.—.7天,若虫期0.～ .天,世代历期0～8天,世代死亡率为. ％。
In nymphal stage, the temperature of developmental zero was . 77℃. The effctive accumulated temperature was 8. d.若虫发育的起点温度 ．77℃，有效积温8．日度；