中国生态农业学报2017，Vol.25Issue(2)：166-171,6.DOI:10.13930/j.cnki.cjea.160663
不同光周期条件下绿色型豌豆蚜性蚜分化规律研究
Differentiation regularity of Acyrthosiphon pisum (green form) sexual morphs in relation to photoperiods
摘要
Abstract
In order to clarify population reproduction strategy and differentiation regularity of Acyrthosiphon pisum (green form) sexual morph in relation to photoperiods,the pea aphid sexual morphs were observed after 2 continuous generations at different photoperiods (8L ∶ 16D,10L ∶ 14D,12L ∶ 12D and 14L ∶ 10D)in the lab.The results showed that the ovipara of pea aphid in Lanzhou area were wingless,while males were winged.Photoperiod had a significant effect on the differentiation of pea aphid sexual morphs (P ＜ 0.05).No sexual morph was produced at 14L ∶ 10D photoperiod,but a lot were differentiated under the other photoperiods (8L ∶ 16D,10L ∶ 14D and 12L ∶ 12D).In the shorter photoperiod conditions for the 3rd generation,percent male sexual morphs gradually diminished while percent ovipara gradually increased with decreasing illumination time.Percent male was highest (30.39％) at 12L ∶ 12D photoperiod,while percent ovipara was lowest (55.67％) at that photoperiod.At 10L ∶ 14D photoperiod,percent vivipara was highest while percent sexual morphs was lowest.Then at 8L ∶ 16D photoperiod,no male was produced and percent ovipara was highest (90.76％) in the 3rd generation.The reproductive period of the 1st generation also had a significant effect on the differentiation of sexual morphs in the 3rd generation under similar short illumination conditions (P ＜ 0.05).Meanwhile,there was a certain time sequence in which pea aphid sexual morphs were differentiated (first ovipara and last males) with some vivipara transitioning to sexual morphs.Hence the critical photoperiod of green pea aphid was between 12 to 14 hours of illumination.A relatively longer illumination was advantageous to the differentiation of males,while short illumination favored higher proportion of ovipara.The results suggested that change in photoperiod was a critical factor of reproductive plasticity.The reproduction of pea aphid sexual morphs and the illumination length maternal pea aphid experienced influenced sexual differentiation of offsprings.关键词
豌豆蚜/绿色型/光周期/雄蚜/性雌蚜/胎生蚜Key words
Acyrthosiphon pisum (Harris)/Green form/Photoperiod/Male aphid/Ovipara/Vivipara分类
农业科技引用本文复制引用
张廷伟,陈万斌,刘长仲,崔少伟,饶福强..不同光周期条件下绿色型豌豆蚜性蚜分化规律研究[J].中国生态农业学报,2017,25(2):166-171,6.基金项目
国家自然科学基金项目(31260433)和甘肃农业大学盛彤笙创新基金项目(GSAU-STS-1419)资助The study was supported by the National Natural Science Foundation of China (31260433) and the SHENG Tongsheng Science and Technology Innovation Foundation of Gansu Agricultural University (GSAUoSTS-1419). （31260433）
