Cold Resistance Effect and Mechanism of Mixed Carboxymethyl Chitosan and Salicylic Acid on Rice Seedlings During Transplanting and Rehabilitation Period

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Online published: 2015-07-20

Abstract

The effect and some physiological index were investigated in 3 rice varieties(combination), Hualiangyou 3, Guinongzhan and Tianyou 998, treated with mixed carboxymethyl chitosan and salicylic acid (MCCSA) with 5 dose levels, which then were subjected to 10℃ low temperature for 4 days in climatic chamber. The results showed that leaf’s discoloration degree, damage degree and MDA content of seedlings declined sharply reduced after sprayed different doses of MCCSA, meanwhile the concentration of proline declined slightly, however, the activity of SOD increased, but activity of POD decreased. The doses of MCCSA in T2 and T3 could increas resistance significantly of rice seedling to low temperature, Tianyou 998 showed strongest resistance to cold in 3 rice varieties after sprayed with MCCSA.

Cite this article

MA Wei-1, HUO Zhi-Guo-2, JI Jing-Hua-1, HU Fei-1* . Cold Resistance Effect and Mechanism of Mixed Carboxymethyl Chitosan and Salicylic Acid on Rice Seedlings During Transplanting and Rehabilitation Period[J]. China Rice, 2015 , 21(4) : 150 -154 . DOI: 10.3969/j.issn.1006-8082.2015.04.034

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