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KMID : 0903619780190010078
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Journal of the Korean Society for Horticultural Science
1978 Volume.19 No. 1 p.78 ~ p.81
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Spring Mobilization of Storage 32P in Gingko Trees
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Abstract
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The labelled phosphorus was supplied to the roots of 1-year-old gingko (Gingko biloba L.) trees during dormant period in the glass house and the mobilization of stored ^(32)P determined in the following early growing season. ^(32)P was detected in all growing tissues, the level of radioactivity being greatest in the root tissues over the 4-week sampling period. At dormant period, only 0.44% of ^(32)P was found in storage tissues (bark, wood and bud) although the accumulation of ^(32)P occurred especially in root tissues. During early growing season, ^(32)P was transported from root tissues to new growing tissues (buds). Eight percent of the initial ^(32)P in storage tissues was transported to new growing tissues. During this period, the ^(32)P in the bud tissues increased about 12 fold.
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