昆虫学报 ›› 2008, Vol. 51 ›› Issue (7): 774-777.

• 研究论文 • 上一篇    下一篇

苜蓿品种(系)对苜蓿斑蚜存活率和生殖力的影响

王森山,许永霞,曹致中,师尚礼,贺春贵   

  • 出版日期:2008-07-20 发布日期:2008-07-20
  • 通讯作者: 贺春贵

Effects of alfalfa varieties on the survival rate and fecundity of Therioaphis maculata (Buckton) (Hemiptera: Aphidae)

WANG Sen-Shan,XU Yong-Xia,CAO Zhi-Zhong,SHI Shan-Li,HE Chen-Gui   

  • Online:2008-07-20 Published:2008-07-20

摘要: 在田间抗蚜性鉴定的基础上,在室内25℃条件下,选用4个抗蚜性不同的苜蓿品种(系),测定了不同苜蓿品种(系)上苜蓿斑蚜Therioaphis maculate (Buckton)若虫存活率及生殖力的影响。结果表明: 苜蓿斑蚜在不同苜蓿品种(系)3、6叶期及成株期的存活率均以HA-3上最低,分别为8.00%±1.15%,21.27%±7.40%,17.07%±3.03%;Hu上最高,分别为25.63%±3.68%,42.27%±2.76%,55.10%±0.19%;且苗期显著低于成株期。以若虫存活率和内禀增长率作为测定抗生性的指标,供试品种(系)对苜蓿斑蚜抗生性的大小依次为HA-3>G3>JH>Hu,与田间抗性鉴定结果基本相近。

关键词: 苜蓿, 苜蓿斑蚜, 抗性, 存活率, 生殖力

Abstract:

Effects of four alfalfa varieties on survival rate and fecundity of Therioaphis maculata (Buckton) were investigated at 25℃ in the laboratory. The results showed that the survival rates of the aphid in the 3-leaf,6-leaf and adult stages were the lowest in HA-3 (8.00%±1.15%, 21.27%±7.40%, and 17.07%±3.03%, respectively), and the highest in Hu (25.63%±3.68%, 42.27%±2.76%, and 55.10%±0.19%, respectively). The survival rate was lower in seedling stage than in adult stage. The level of alfalfa resistance was in order of HA-3>G3>JH>Hu using the innate capacity of increase (rm) and the nymph survival rate as the indices of alfalfa antibiosis to the aphid,and this is correspondent well with that in fields.

Key words: Alfalfa, Therioaphis maculat, resistance, survival rate, fecundity