Effect of Root Temperature on Cytokinin Activity in Root Exudate of Vitis vinifera L.
Effect of Root Temperature on Cytokinin Activity in Root Exudate of Vitis vinifera L.
复制标题
根温对葡萄根系分泌物细胞分裂素活性的影响。
DOI：
10.1104/pp.42.8.1131
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发表时间：
1967
期刊：
影响因子：
7.4
通讯作者：
G. Kerridge
中科院分区：
文献类型：
--
作者：
K. Skene;G. Kerridge
Root exudates of plants of Vitis vinifera L. cv. Thompson Seedless, grown in nutrient cultures with root temperatures maintained at either 20 degrees or 30 degrees and with shoots at a common air temperature, were assayed for cytokinin activity. After chromatography of freeze-dried sap on paper with n-butanol/acetic acid/water (4:1:1). activity was detected with a soybean callus assay. For both root temperatures, major activity appeared between R(F) 0.6 and R(F) 0.8, at about the same concentration in each case. The major difference between the 2 samples was the presence of activity at R(F) 0.1 to 0.2 in the 20 degrees sample and its absence in the 30 degrees sample.The higher root temperature resulted in increased shoot and root elongation, increased dry matter accumulation by both shoots and roots, and also altered the morphological appearance of the roots.
