Department of Horticulture, Purdue University, Lafayette, Indiana 47907.
Plant Physiol. 1973 Dec;52(6):683-4. doi: 10.1104/pp.52.6.683.
The calcium content and distribution across the abscission zones of (2-chloroethyl) phosphonic acid-treated bean (Phaseolus vulgaris L. var. Contender) leaves were lower and not uniformly distributed as compared to the control. Calcium chloride-treated bean leaves had a higher calcium content, with more calcium localized in the potential abscission layer. Ethephon treatment promoted abscission in both debladed and nondebladed plants; there was a corresponding decrease in calcium in the abscission zone just prior to separation. Deblading of bean leaves under a calcium solution increased the calcium level in the abscission zone and delayed abscission.
（2-氯乙基）膦酸处理的菜豆（Phaseolus vulgaris L. var. Contender）叶片的离区钙含量和分布低于对照，且分布不均匀。氯化钙处理的菜豆叶片钙含量较高，更多的钙定位于潜在的离层。乙烯利处理促进了去叶和不去叶植株的脱落；在分离前，离区的钙含量相应减少。在钙溶液下去除菜豆叶片可增加离区的钙水平并延迟脱落。
