Stomata of monocots

 

Abnormal and cytoplasmic connection of guard cells of stomata of leaves of six species of the monocots

by Hashemloian B. D., Azimi A. A. (2014)

Babak Delnavaz Hashemloian, Azra Ataei Azimi

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in Journal of Plant Sciences 2(6): 334-338

Abstract:

The present investigation describes abnormal stomata and cytoplasmic connections between guard cells of neighboring stomata in mature leafs of six species of the monocots.

The study is made on leaves of Amaryllis reticulata L. Her., Narcissus pseudonarcissus L., Iris langport Wern., Crocus sativus L., Ixiolirion tataricum (Pall.) and Allium cepa L. anomocytic stomata type was observed in all species.

Several stomata abnormally include single guard cells, aborted guard cells arrested developments and cytoplasmic connection between guard cells of neighboring stomata was common to all species except in Allium cepa wasn’t observed cytoplasmic connection.

Read the full article: Science

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Stomata of Poaceae and Cyperaceae (monocots)

 

STUDIES ON STOMATA OF SOME SELECTED GRASS SPECIES OF POACEAE AND CYPERACEAE

by Babu R. H., Savithramma N. 

R. Hari Babu R. H., N. Savithramma N.

in World Journal of Pharmacy and Pharmaceutical Sciences: 3(7): 1268-1279

ABSTRACT

Stomata are pores on leaf surfaces through which plant exchange CO2, water vapour and other constituents. The present study focus on the intrinsic variation in stomatal index and frequency was assumed in thirty Poaceae and Cyperaceae grass species.

Quantitative microscopy of leaves, stomatal number, stomatal index, stomatal frequency and epidermal cell number were examined. Results of quantitative microscopy had show that stomata number, epidermal cell number, stomatal index and stomatal frequency 42, 184, 23 and 507 respectively in Poaceae grass species. While in Cyperaceae grass species showed highest in 28, 108, 20 and 308 respectively.

Stomatal characters are among the epidermal characteristic, which have been very useful in taxonomic delimitation apart from the functional relevance of epidermal structures.

Stomata of Gramineae / Poaceae (monocots)

 

Epidermal structure and development of stomata in some Gramineae

by Inamdar J. A.(1970)

in Bulletin de la Société Botanique de France: Volume 117, Issue 7-8, 1970

Summary

The present investigation describes the epidermal structure and development of stomata in 24 genera and 42 species of the Gramineae.

The mature stomata are typically paracytic with two lateral subsidiary cells placed parallel to the pore. Rarely the subsidiary cells are absent. The ontogeny of paracytic stomata is through only one mitotic division of the GMC and is haplocheilic or perigenous from organ to organ. The development of the stomata from initiation to maturity is studied through its successive stages.

Superimposed twin stomata are seen. Unicellular, bicellular trichomes and calcium oxalate crystals are noticed. The epidermal cells are mostly elongated, arranged in vertical rows and have straight or sinuous radial walls.

Read more: Taylor and Francis Online

 

Stomata of Vanilla (monocots)

 

Dermal morphology of Vanilla planifolia Andr. and V. wightii Lindl

by Nayar B. K., Rai R., Vatsala R. (1976)

in Proceedings of the Indian Academy of Sciences – Section B

November 1976, Volume 84, Issue 5, pp 173-179

Abstract

In contrast to other Orchidaceae, the stomata in Vanilla planifolia and V. wightii are predominantly of the para-mesoperigenous type, but the meristemoid is squarish as in other members of the family. 16% of the stomata in V. planifolia and the stomata on the scale-leaves of V. wightii are of the aperigenous type.

In V. planifolia, a few stomata (8%) are aniso-mesogenous (meristemoid triangular) and others (2%) hemipara-mesoperigenous. In V. wightii subsidiary cells of the para-mesoperigenous cauline stomata divide secondarily to form 5–7 subsidiary cells.

Stomata are abundant on the stem of V. wightii (stomatal index-3·4), but sparse in V. planifolia (index-0·57). There is a progressive increase in stomatal index from base to apex of the leaf of V. planifolia.

About 80% of the the stomata in mature leaves of V. planifolia degenerate, as leaves get older.

The epidermis is devoid of trichomes in both species. In V. planifolia, each epidermal cell has a large crystal included in it. It is suggested that the stomatal types in Vanilla indicate the relationship of Orchidaceae to Hypoxidaceae, through Curculigo, which also has para-mesoperigenous stomata.

 

Stomata in Monocots

 

Abnormal and Cytoplasmic Connection of Guard Cells of Stomata of Leaves of Six Species of the Monocots

by Hashemloian B. D., Azimi A. A. (2014)

Babak Delnavaz Hashemloian, Azra Ataei Azimi,

===

in Journal of Plant Sciences. 2(6): 334-338. – doi: 10.11648/j.jps.20140206.21

Abstract

The present investigation describes abnormal stomata and cytoplasmic connections between guard cells of neighboring stomata in mature leafs of six species of the monocots.

The study is made on leaves of Amaryllis reticulate L. Her., Narcissus pseudonarcissus L., Iris langport Wern., Crocus sativus L., Ixiolirion tataricum (Pall.) and Allium cepa L.

Anomocytic stomata type was observed in all species. Several stomata abnormally include single guard cells, aborted guard cells arrested developments and cytoplasmic connection between guard cells of neighboring stomata was common to all species except in Allium cepa wasn’t observed cytoplasmic connection.

Stomata in Monocots

 

 

STOMATAL TYPES OF MONOCOTS WITHIN FLORA OF KARACHI, PAKISTAN

by Rubina A., Sharmeen S., Perveen A. (2007)

RUBINA ABID, SARA SHARMEEN, ANJUM PERVEEN,

Department of Botany, University of Karachi, Karachi-75270, Pakistan.

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in Pak. J. Bot., 39(1): 15-21

Abstract

Stomata of 54 monocot species belonging to 42 genera in 10 families were examined by light and scanning electron microscopy.

Three types of stomata viz., tetracytic, paracytic and anomocytic were recognized.

In the family Commelinaceae tetracytic type is present and in the family Liliaceae both tetracytic and anomocytic types are found, while,Typhaceae, Gramineae, Cyperaceae, Palmae and Juncaceae are characterized by paracytic type.

In the remaining three families i.e., Potamogetonaceae, Najadaceae and Hydrocharitaceae stomata are absent.