The Stomata of Ginkgo biloba L., with Comments on some Noteworthy Features


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Kausik FLS, S.B. (1974) The Stomata of Ginkgo biloba L., with Comments on some Noteworthy Features. Botanical Journal of the Linnean Society, 69 (2). pp. 137-146. ISSN 1095-8339

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The stomata of Ginkgo biloba L. are haplocheilic and perigenous, as described and confirmed by Pant & Mehra in 1964, but there are several striking differences in the structure of the stomatal apparatus between their descriptions and the findings recorded in the present paper. According to the present observations, the stomata are amphicyclic (usually incompletely), not monocyclic as they stated. There are 5 to 7 subsidiary cells (not 4 to 6); and a clear distinction into lateral and polar subsidiary cells is visible during most of the developmental stages at least, a fact that was not mentioned by Pant & Mehra. The papillae of the subsidiary cells arise from the outer free walls, not from the inner (centripetal) walls as they claimed. Further, these papillae do not conceal the stomatal pore as completely as was indicated previously: they extend only partially towards the opening of the epistomal chamber. These and other differences from published accounts are dealt with briefly and commented upon in the paper. Some notes are also included on the occurrence of amphistomatic leaves, and on the occurrence and nature of twin stomata.

Item Type: Article
Subjects: Faculty of Science > Environmental and Biological Sciences > Botany
Divisions: Jnana Bharathi / Central College Campus > Department of Botany
Depositing User: Mrs Sushma H R
Date Deposited: 11 May 2016 07:26
Last Modified: 11 May 2016 07:26

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