Journal of Northern Agriculture ›› 2024, Vol. 52 ›› Issue (3): 108-113.doi: 10.12190/j.issn.2096-1197.2024.03.12

• Plant protection•Horticulture • Previous Articles     Next Articles

Study on supercooling capacity and low-temperature survival rate in Atractomorpha burri

LI Wenbo1, HAIDER BASHIR NAWAZ1, WANG Zijie2, TANG Jiawei3, YANG Shuang1, CHEN Huanhuan1, TIAN Ruilin4   

  1. 1. College of Biological Resource and Food Engineering,Qujing Normal University,Qujing 655011,China;
    2. Jiamusi Branch,Heilongjiang Academy of Agricultural Sciences,Jiamusi 154007,China;
    3. Pony Testing International Group Co.,Ltd.,Changchun 130103,China;
    4. College of Life Science and Technology,Inner Mongolia Normal University,Hohhot 010022,China
  • Received:2024-03-21 Online:2024-06-20 Published:2024-09-13

Abstract: 【Objective】 To clarify the cold tolerance of Atractomorpha burri population.【Methods】 The supercooling capacity of each stage of Atractomorpha burri and the survival rate of young and old nymphs at low temperature conditions were determined by using the supercooling point tester in Qujing City,Yunnan Province.【Results】 There were significant differences in the supercooling point and freezing point of different stages of Atractomorpha burriP<0.05). The supercooling point and freezing point of egg stage were the lowest,which were -16.16,-8.13 ℃,respectively. The supercooling point and freezing point of the 3rd instar nymphs were the highest,which were -8.35,-5.20 ℃,respectively. The supercooling point and freezing point of male adults were -10.26,-7.18 ℃,respectively,which were lower than -9.00,-7.00 ℃ of female adults. The variation of supercooling point and freezing point of different individuals in the same stage conformed to normal distribution. Under low temperature conditions,the temperature of more than 50% mortality of the 3rd and 5th instar nymphs was -7.00,-9.00 ℃,respectively.【Conclusion】The cold tolerance of the egg stage of Atractomorpha burri was the strongest,the 5th instar nymphs had stronger low temperature tolerance,and the cold resistance of male adults was stronger than that of female adults.

Key words: Atractomorpha burri, Supercooling capacity, Low temperature, Survival rate

CLC Number: 

  • Q969.26