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Structure and ontogeny of stomata in vegetative and floral organs of some Apocynaceae
Author(s) -
Inamdar J. A.,
Patel R. C.,
Mohan J. S. S.
Publication year - 1991
Publication title -
feddes repertorium
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.24
H-Index - 25
eISSN - 1522-239X
pISSN - 0014-8962
DOI - 10.1002/fedr.19911020515
Subject(s) - biology , anatomy , apocynaceae , ontogeny , cuticle (hair) , botany , plant anatomy , plant morphology , genetics
The organs investigated are either hypo‐, amphi‐ or astomatic. The epidermal cells are polygonal, isodiametric or elongated with thick straight, arched, sinuous or articulated anticlinal walls. The epidermal cells are septate in the stem of Catharanthus pusillus . Cuticle is papillate or striated. Epidermal cells of the ovary of Thevetia peruviana have minimum length and breadth. Stomata are mostly distributed in between the veins either close to each other or widely separated from each other. The orientation of stomata may either in any direction or parallel to and in the direction of long axes of the organs. The mature stomata are paracytic, anomocytic, anisocytic or with a single subsidiary cell. In the foliar organs great majority of the stomata are paracytic while in the other organs, the percentage of anomocytic stomata is greater. The special features noticed are: arrested development, cytoplasmic connection between near‐ by stomata and contiguous stomata. The ontogeny of anomocytic stomata is haplocheilic or perigeneous, that of paracytic and with a single subsidiary cell syndetochelic or mesogenous while that of anisocytic haplo‐syndetocheilic or mesoperigenous.