Calcium Distribution in the Abscission Zone of Bean Leaves | Zendy

B. W. Poovaiah | Zendy; H. P. Rasmussen | Zendy

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Calcium Distribution in the Abscission Zone of Bean Leaves

Author(s) -

B. W. Poovaiah,

H. P. Rasmussen

Publication year - 1973

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.52.6.683

Subject(s) - abscission , phaseolus , calcium , ethephon , botany , chemistry , biology , horticulture , agronomy , biochemistry , ethylene , organic chemistry , catalysis

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.

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