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- Title
Relationships between reactive oxygen metabolism and endodormancy release of peach bud under shortterm heating.
- Authors
Wang Xiao-di; Wang Hai-bo; Gao Dong-sheng; Li Jiang; Wang Bao-liang; Liu Feng-zhi
- Abstract
Taking the 6-year old peach "Shuguang" as test object, this paper studied the effects of short-tern: heating at 40 °C, 45 °C, and 50 °C on the bud livability, bud burst, reactive oxygen content, and activities of related enzymes in peach bud, aimed to investigate the regulation effect of short-term heating on the endodormancy release of peach bud. The results indicated that the effects of short-term heating on the endodormancy release of peach bud were advanced by the postponement of treatment date the increase of treatment temperature, and the prolonging of treatment time. On November 30, the regulation effect of heating at 40 °C was negative. Comparing with those under no-heating (CK), the date of endodormancy release was postponed, the bud burst, the O2, and · OH production rates, the H2 O2 content, and the activities of CAT and POD were lowered, and the SOD activity was improved. It a an adverse under heating at 45 °C and 50 °C. On December 10, heating at 40 °C nearly had no obvious effect on the endodormancy release, a while heating at 45 °C and 50 °C had the same effect as that on November 30, with the former being more superior to the latter. Correlation analysis indicated that the rapid increase of reactivity oxygen might be the critical reason for the endodormancy release of peach bud.
- Subjects
EFFECT of temperature on plants; PEACH; BUDS; HIGH temperature (Weather); REACTIVE oxygen species; PLANT metabolism; DORMANCY in plants
- Publication
Chinese Journal of Applied Ecology / Yingyong Shengtai Xuebao, 2010, Vol 21, Issue 11, p2749
- ISSN
1001-9332
- Publication type
Article