烟蚜生长发育与温度的关系研究

Effect of Temperature on Growth, Development, Reproduction and Survive of Myzus persicae

在10组温度组合条件下研究烟蚜有效积温、发育起点温度、生殖率等生物学特性,结果表明,第一代若虫期从8℃下的32.54d到26℃下的5.43d。28℃以上,发育受到高温的抑制作用,发育速率降低,28℃、30℃和32℃下若蚜的发育历期依次为6.24、6.68、7.19d。通过直线回归分析,得出烟蚜全代最低发育起点温度为4.86℃,其中若虫和成虫的发育起点分别为5.15℃、3.67℃;并通过非线性回归迭代,得出全代最高发育上限温度为28.47℃,其中若虫和成虫分别为28.05℃、27.17℃;有效积温为142.86日度,其中若虫和成虫分别为121.95、22.32日度。温度在8～30℃变化时,若虫期的存活率为34.76%～72.92%,32℃存活率降至22.50%。成虫的平均寿命从8℃下的23.42d到32℃时的9.57d。平均生殖率26℃最高为34.56头/雌,32℃最低为13.71头/雌。对确定烟蚜迁飞规律提供有利的依据。

The biological character of Myzus persicae includes available accumulation temperature, starting development point and reproduction rate, et al, which were studied inl0 different temperature. The results showed that the first initial nymph stages was from 32.54 days to 5.43 days. Above 28℃, development of Myzus persicae was suppressed because of high tempreture. In 28℃, 30℃ and 32℃ the first initial nymph stages were 6.24, 6.68 and 7.19 days. The linear equation regression analytical results showed that the temperature of the lowest starting development point was 4.86℃ in total period, of which the first initial nymph and adult were 5.15℃ and 3.67℃. Simultaneously the equation of nonlinear regression analytical results showed that the temperature of the highest development point was 28.47℃ in total period, of which the first initial nymph and adult were 28.05℃and 27.17℃. The available accumulation temperature was 142.86℃,of which the first initial nymph and adult were 21.95℃ and 22.32℃. The survival rate of initial nymph were from 34.76% to72.92% when tempreture changed from 8℃ to 30℃. In addition, the survival rate of initial nymph was 22.50% in 32℃. The average life-span of adult were from 23.42 to 9.57 days. The highest average reproduction rate was 34.56 in 26℃, but the lowest was 13.71 in 32℃. The results were favorable to migration law of Myzus persicae.