Stomata in Trifolium repens

Leaf cuticular variations in Trifolium repens L. as indicators of environmental pollution

Sharma G. K., Butler J. (1973)

G. K. Sharma, Joe Butler,

Department of Biological Sciences, University of Tennessee at Martin, Tennessee, USA

Environ. Pollut. 5(4): 287-293 – https://doi.org/10.1016/0013-9327(73)90005-0 –

https://www.sciencedirect.com/science/article/abs/pii/0013932773900050

Abstract

Two populations of white clover (Trifolium repens L.) were studied from selected rural and urban areas of Tennessee, USA, to determine the relationship between variation in flower production, leaf cuticular features, and the environmental pollution in the area.

Stomatal frequency values were low in populations from areas of high pollution. Trichome frequency and length increased in polluted areas. Trichome type was also affected. Floral productivity decreased in polluted areas. Stomatal size range and the number of subsidiary cells remained the same in both populations.

Stomata of leaves

Epidermal and cuticular studies of leaves

Sinclair C. B., Sharma G. K. (1971)

J. Tenn. Acad. Sci. 46: 2-11 –

https://www.tennacadofsci.org/journal/articles/vol46/JTAS46-1-2.pdf

Stomatal size, density and environmental pollution

 

 

Environmental pollution.  Leaf cuticular patterns in Trifolium repens L.

by Sharma G. K., Butler J. (1975)

in Ann. Bot. 39: 1087-1090 – DOI: 10.1093/oxfordjournals.aob.a085028 –

https://www.jstor.org/stable/42756344?seq=1#page_scan_tab_contents

Abstract

Red clover populations collected from the polluted environments of Memphis, Nashville, and Knoxville (Tennessee) showed decreased floral production, low stomatal frequency, high trichome density, and longer trichomes.

The results for plant population collected from a less polluted, rural Reelfoot Lake area were quite the opposite. Subsidiary cell complex remained the same in all the populations, while stomatal size range showed little variation.

Stomata in Liquidambar styraciflua (Altingiaceae)

 

Photo credit: Google

Sweet Gum during autumn along Lower Ferry Road in Ewing, New Jersey

Geographic leaf cuticular and gross morphological variations in Liquidambar styraciflua L. and their possible relationship to environmental pollution

by Sharma G. K., Tyree J. (1973)

University of Tennessee, Martin, Tennessee, USA

G. K. Sharma

Jane Tyree

in Bot. Gaz. 134(3): 179-184