Translocation and Persistence of 1,2‐14C‐(2‐Chloroethyl)‐phosphonic Acid (Ethephon) in Thompson Seedless Grapes
作者:
ROBERT J. WEAVER,
HESHAM A. ABDEL‐GAWAD,
GEORGE C. MARTIN,
期刊:
Physiologia Plantarum
(WILEY Available online 1972)
卷期:
Volume 26,
issue 1
页码: 13-16
ISSN:0031-9317
年代: 1972
DOI:10.1111/j.1399-3054.1972.tb03538.x
出版商: Blackwell Publishing Ltd
数据来源: WILEY
摘要:
AbstractApplications of 1,2−14C‐(2‐chloroethyl)phosphonic acid (ethephon) were made to the surface of matureVitis viniferacv. Thompson Seedless berries. After 7 days, 62 % of the recovered radioactivity was still on the outside surface and was easily washed off. Within the berry, radioactivity was present only in the carbon‐labeled ethephon fraction, as revealed by chromatographic analysis. Similar results were obtained when the compound was injected directly into the berries. Application of ethephon to the first leaf above the cluster, or to a berry pedicel or a peduncle, failed to result in measurable movement of the compound into the berries. Autoradiographic studies with young shoots indicated that ethephon translocated in the phloem in a source to sink relat
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