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KMID : 0903519830260020132
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Journal of the Korean Society of Agricultural Chemistry and Biotechnology
1983 Volume.26 No. 2 p.132 ~ p.136
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Changes in the Activity of IAA Oxidase during Chilling Pea Seedlings
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Park Ro-Dong
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Abstract
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The indole-3-acetic acid(IAA) oxidase activity of shoot and roof tips of etiolated pea seedlings(Pisum sativum L. var. Sparkle) during and after chilling was determined. The IAA oxidase level of root tips was 4 to 15 times as high as that of shoot tips. During chilling the seedlings apical and subapical 5㎜ shoot sections increased in IAA oxidase activity but apical and subapical 5 ㎜ root sections decreased. When chilled plants were returned to 25℃ to recover, the enzyme activity had a tendency to restore to the activity level of controlled plants.
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