The Stomatal Ontogeny and Structure of the Liassic Pteridosperm Sagenopteris (Caytoniales) from Hungary

Maria Barbacka; Károly Bóka

doi:10.1086/314240

The Stomatal Ontogeny and Structure of the Liassic Pteridosperm Sagenopteris (Caytoniales) from Hungary

International Journal of Plant Sciences ◽

10.1086/314240 ◽

2000 ◽

Vol 161 (1) ◽

pp. 149-157 ◽

Cited By ~ 14

Author(s):

Maria Barbacka ◽

Károly Bóka

Keyword(s):

Stomatal Ontogeny

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Stomatal ontogeny in vegetative and floral organs ofHippeastrum equestre Herb. (Amaryllidaceae)

Feddes Repertorium ◽

10.1002/fedr.4910950915 ◽

1984 ◽

Vol 95 (9-10) ◽

pp. 675-678

Author(s):

Y. Y. Karatela ◽

L. S. Gill

Keyword(s):

Floral Organs ◽

Stomatal Ontogeny

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Stomatal ontogeny of the vegetative and floral organs of some Papilionaceae

Australian Journal of Botany ◽

10.1071/bt9690081 ◽

1969 ◽

Vol 17 (1) ◽

pp. 81 ◽

Cited By ~ 10

Author(s):

GL Shah ◽

BV Gopal

Keyword(s):

Vigna Unguiculata ◽

Subsidiary Cell ◽

Epidermal Cells ◽

Vegetative Organs ◽

Floral Organs ◽

Leaf Petiole ◽

Different Types ◽

Anomocytic Stomata ◽

Subsidiary Cells ◽

Stomatal Ontogeny

The structure and development of stomata on the vegetative and floral organs of Vigna unguiculata Walp., and the vegetative organs of Phaseolus radiatus L. and P. aconitifolius Jacq. are described. Paracytic, anisocytic, and anomocytic stomata are present on the same surface of different organs of the plants investigated except on the stem and petiole of V. unguiculata, the bract of P. radiatus, and the petiole, stipule, and stipel of P. aconitifolius where the last type is absent. Stomata with only one subsidiary cell are found on the leaf, petiole, sepal, and petal of V. unguiculata. Diacytic stomata occur on the stipel of P. radiatus and the stem, stipule, and stipel of P. aconitifolius. Paracytic stomata are by far the commonest on each organ. The frequency of different types of stomata on different organs in the plants investigated is tabulated. The ontogeny of different kinds of stomata on each organ is mesogenous, but the perigenous type may be found on the petal and pericarp of V. unguiculata and the stipule of P. radiatus. The variation in stomata is due to: (a) a diversity in stomatal types even on the same surface, and (b) an increase in the number of subsidiary cells. The subsidiary cells divide, or additional subsidiary cells are derived from adjacent epidermal cells. The present study also supports the inclusion of the species concerned in the tribe Phaseolae.

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