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TERMINAL PHLOEM IN VASCULAR BUNDLES OF LEAVES OF CAPSICUM ANNUUM AND PHASEOLUS VULGARIS
Author(s) -
Morretes Berta Lange
Publication year - 1962
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1962.tb14981.x
Subject(s) - phloem , phaseolus , xylem , biology , botany , vascular bundle , sieve tube element , vascular cambium , capsicum annuum , vascular tissue , horticulture , cambium , pepper
Morretes, Berta Lange de. (U. Sao Paulo, Brazil.) Terminal phloem in vascular bundles of leaves of Capsicum annuum and Phaseolus vulgaris. Amer. Jour. Bot. 49(6): 560–567. Illus. 1962.—The terminations of vascular bundles in the mesophyll of Capsicum annuum and Phaseolus vulgaris were studied in mature leaves. In Capsicum , both the principal and the lateral vein endings contain phloem and, generally, the xylem and the phloem end together; in some bundles, however, the last xylem element extends slightly beyond the last sieve element. In Phaseolus , main and lateral vein endings may terminate with both xylem and phloem, or xylem only. Some lateral endings contain no sieve elements; in such endings, parenchyma may occupy the position of the phloem. The sieve elements of the vein endings contain slime bodies. In both species the companion cells of terminal phloem are wider than the sieve elements, have dense cytoplasm, and rich granulation.