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Scholarly Journal of Agricultural Science Vol. 8(1), pp. 1-6 March, 2018
Available online at http
://
www.scholarly-journals.com/SJAS
ISSN 2276-7118 © 2018 Scholarly-Journals


Comparision of the leaf Stomatal characteristics between Brassica campestris and B. napus (Brassicaceae: Brassica)

Zill-E-Huma.
1, Ishfaq, H.2, Uzma, S.2, Jin-Ming, C.3 and Qing-Feng, W.3

1Department of Botany, University of Peshawar, Pakistan
2Department of Botany, University of Chitral, Pkistan
3Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China

Abstract :

 

Stomata are consequential as gaseous and dihydrogen monoxide exchange organs for most of the plants and are proximately cognate to photosynthesis, respiration and transpiration. In this study, we compared the stomatal characteristics of epidermis of leaves of Brassica campestris and B. napus, two economically consequential plant species in Brassica (Brassicaceae). Leaves of both species are dorsoventral. Types of stomata observe on upper surface of B. campestris leaf were diacytic, anisocytic, holoparacytic, hemiparacytic and anomocytic and on lower epidermis were hemiparacytic, anomocytic and anisocytic stomata. Stomatal types observe on upper epidermis of B. napus were anomocytic, desmocytic, hemiparacytic and anisocytic and on lower epidermis of B. napus were anomocytic anisocytic and diacytic. In B. campestris the highest stomatal density was recorded on the adaxail side while in case of B. napus it was highest on the abaxial surface. Percentage of closed stomata was more on the abaxial side of both species as compared to the adaxial side. There were diminutive distinctions between mean length and width of the stomatal pores and sentinel cells of the adaxial and abaxial surfaces of the both plant species. There was a positive paramount cognation between the epidermis and stomata of the same leaf surface in both plant species. It is concluded from the present study stomata on the leaves surfaces are bio-designators. Their numbers, arrangement, types, distribution, indices, densities and frequencies pellucidly show the type of the environment in which the study plants grow.

 

Key words: BN = Brassica napus, BC = Brassica campestris, L = Lower epidermis, U = Upper epidermis, U = Upper epidermis.

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