To understand physiological effects of rapid cold hardening (RCH) on the diapause larvae of the rice stem borer, Chilo suppressalis Walker, at physiological and biochemical levels, the contents of water, lipid, total sugar, lowmolecular weight carbohydrates and the actitives of SOD, POD, CAT in the diapause larvae were measured. The results showed that the content of water in RCHtreated larvae was significantly lower than that under the check at 0.05 probability level, while the activity of POD was in adverse. The contents of lipid, total sugars, trehalose, glucose, glycerol and the activities of SOD, CAT showed no significant difference. The content of water of larvae under nonrapid cold hardening(NRCH) was significantly lower than that under the check, while the acitivity of POD was in adverse and the rest showed no significant difference. The activities of POD of RCH larvae were just significantly higher than those of NRCHtreated larvae (P<0.05). Therefore, RCH could enhance physiological effects of water and POD on the diapause larvae.
QIANG Chengkui1,2,# , YU Lingya3,# , DU Yuzhou1,* , QIN Yuehua2 , ZHAO Hu2 , HU Changxiao2
. Physiological Effects of Rapid Cold Hardening on Diapause Larvae of Rice Stem Borers, Chilo suppressalis Walker (Lepidoptera: Pyralidae)[J]. Chinese Journal OF Rice Science, 2012
, 26(2)
: 251
-254
.
DOI: 10.3969/j.issn.10017216.2012.02.016
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