Study on Cold hardiness of adults of Monolepta occifuvis and the initial temperature and Effective accumulated temperature of eggs

Chinese Agricultural Science Bulletin ›› 2009, Vol. 25 ›› Issue (2): 196-198.

• 植物保护科学 • Previous Articles Next Articles

Study on Cold hardiness of adults of Monolepta occifuvis and the initial temperature and Effective accumulated temperature of eggs

Yang Lang,zhen-hua xian,guo-rong deng,li-fei huang

Received:2008-10-16 Revised:2008-11-27 Online:2009-01-20 Published:2009-01-20

Abstract

Abstract: Supercooling points and freezing points of adults of Monolepta occifuvis (Gressitt et Kimoto) were measured in laboratory from Nanning, Guangxi Province. The mean supercooling points of the female and male adults were －10.75℃ and －8.88℃ respectively, while their freezing point were －6.5℃ and －3.80 ℃.The results revealed stronger cold hardness in female adults than in male adults. Initial temperature and Effective accumulated temperature of eggs were measured under natural temperature. The results showed that the developmental threshold temperature and the effective accumulative temperature for the egg were estimated to be15.8±0.7℃ and 142.5±9.5 degree days, respectively

CLC Number:

S433

Yang Lang,zhen-hua xian,guo-rong deng,li-fei huang. Study on Cold hardiness of adults of Monolepta occifuvis and the initial temperature and Effective accumulated temperature of eggs[J]. Chinese Agricultural Science Bulletin, 2009, 25(2): 196-198.

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Study on Cold hardiness of adults of Monolepta occifuvis and the initial temperature and Effective accumulated temperature of eggs

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