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【目的】为明确二斑叶螨Tetranychus urticae Koch对不同品种茄子的选择性与适合度。【方法】通过二斑叶螨对不同品种茄子的田间选择性试验以及在室内不同品种茄子对二斑叶螨种群数量、个体生长发育和繁殖的影响试验,分析了二斑叶螨对9个茄子栽培品种和1个野生茄子品种的寄主选择性,以及在不同品种上的种群动态、发育历期和繁殖力。【结果】二斑叶螨对野生品种蒜芥茄Solanum sisymbriifolium的选择性最差,在该品种上除卵可以正常孵化外其他时期均不能存活。在茄子S.melongena品种间,二斑叶螨对京茄6号和日友长直壮青长茄的选择性最强,分别达到195和183头/株,对布利塔和长竹丝茄的选择性最差,分别为63.5和59.75头/株。接入20对成螨后第28天,紫龙王4号上的数量最多(1 009头/株),京茄6号和嫁接的京茄6号上的数量次之(分别为981和909头/株)。二斑叶螨在京茄6号上的发育历期最短,为9.31 d;在长丰2号上发育历期最长,为11.08 d。京茄6号、京茄黑霸和嫁接的京茄6号上二斑叶螨开始产卵的前5 d内单雌产卵量分别为35.92,33.20和31.34粒/头,是产卵量较多的3个品种,且3个品种之间差异不显著;紫龙王4号、茄砧1号、布利塔和长丰2号上的产卵量较少,分别为18.56,19.24,22.26和23.36粒/头,且4个品种之间差异不显著。【结论】二斑叶螨对紫黑圆茄类的京茄6号的选择性较强、适合度较高,对紫黑长茄布利塔的选择性和适合度为中等,对野生品种蒜芥茄的选择性和适合度表现为最差。
【Objective】 To determine the selectivity and fitness of Tetranychus urticae Koch to different eggplant varieties. 【Method】 The field test of two kinds of spider mites on different varieties of eggplant and the effects of different indoor eggplant varieties on the population, development and reproduction of two-spotted spider mites were studied. The effects of two-spotted spider mites Host selection of cultivars and one wild eggplant variety, as well as population dynamics, developmental duration and fecundity on different varieties. 【Result】 Two-spotted spider mite had the worst selectivity to the wild variety Solanum sisymbriifolium. In this variety, the ovum could not survive except the eggs could hatch normally. Among the S. melongena cultivars, the two-spotted spider mites had the strongest selectivities to the two cultivars, Jing 195 and 183, respectively, The worst selectivity, respectively 63.5 and 59.75 head / plant. On the 28th day after access to 20 pairs of mites, the number on Zilongwang 4 was the highest (1 009 plants per plant), followed by the number of plants on Jingzao 6 and grafted Qinhou 6 (981 and 909 respectively / Strain). The developmental duration of Tetranychus urticae was the shortest at 9.31 days in Jing-zhao 6 and the longest in Changfeng-2 was 11.08 days. The number of ovipositional fecundity was 35.92, 3.20 and 31.34, respectively, in the first 5 days of the first generation of spider mites, There was no significant difference among the three cultivars. The numbers of eggs laid on Zilongwang 4, No.3, No.3, Breitao and Changfeng No.2 were less, which were 18.56, 19.24, 22.26 and 23.36 There was no significant difference between the four cultivars. 【Conclusion】 Tetranychus urticae showed strong selectivity and adaptability to the purple tomato of Jiaozuo No.6. The selectivity and suitability of the two-spotted spider mite to the purple tower was medium, The selectivity and fitness of mustard is the worst.