Stomata in Bougainvillea (dicots)

 

Epidermal studies in some Indian cultivars of Bougainvilleas

by Inamdar J. A., Gandadhara M., Avita Sr., Rao N. V. (1980)

in Feddes Repertorium Volume 91, Issue 4, 1980, 259–266 – DOI: 10.1002/fedr.19800910405 – 

http://onlinelibrary.wiley.com/doi/10.1002/fedr.19800910405/full

Abstract

Epidermal studies in fifteen Indian cultivars of Bougainvilleas are described.

The epidermal cells are polygonal isodiametric, or elongated with thick straight arched or slightly sinuous walls. Parallel culticular striations are radiating from guard cells.

The mature stomata are anomocytic, paracytic and with a single subsidiary cell.

The abnormal types noticed are: single guard cells with or without pores, arrested development, variously oriented contiguous stomata, cytoplasmic connections between nearby stomata and epidermal or subsidiary cells, and persistent stomatal cells.

The development of anomocytic stomata is perigenous while that of the other types is mesogenous.

Fifteen cultivars of Bougainvilleas are separated on the basis of bract colour, stomatal frequency and index per unit area.

Stomata in Centrospermae (dicots)

 

Epidermal structure and ontogeny of stomata in some Centrospermae

by Inamdar J. A., Gandadhara M., Morge P. G., Patel R.M. (1977)

in Feddes Repert. 88: 465-475. (1969) – DOI: 10.1002/fedr.19770880707 – 

http://onlinelibrary.wiley.com/doi/10.1002/fedr.19770880707/full

Abstract

The present paper deals with the epidermal structure, structure and ontogeny of stomata in 25 species of the Centrospermae.

The epidermal cells are polygonal, isodiametric or elongated in various directions with thick, either straight or arched or sinuous anticlinical walls. Simple uniseriate trichomes with terminal capitate cell, capitate eglandular, unicellular spiny, cylindrical and simple unicellular trichomes are noticed.

Anomocytic, paracytic, diacytic, anisocytic, transitional type between paracytic and diacytic, and stoma with a single subsidiary cell are the stomatal types observed.

Abnormalities such as single guard cells, degeneration of guard cells, arrested developments and cytoplasmic connections between adjacent stomata are observed.

The ontogeny of anomocytic stomata is perigenous, that of stoma with a single subsidiary cell is mesogenous, of paracytic, diacytic and transitional between paracytic and diacytic stomata is either mesogenous or mesoperigenous, while that of anisocytic stomata is mesoperigenous. Diacytic and paracytic stomata are structurally similar but have dissimilar ontogeny.

Division of the Centrospermae into four suborders is justified.