• Yash Dave

      Articles written in Proceedings – Plant Sciences

    • Structural design of the developing and mature pericarp ofHibiscus sabdariffa L.

      Yash Dave T (xxxV) Ramana Rao J A Inamdar

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      The pericarp ofHibiscus sabdariffa can be differentiated into epicarp, mesocarp and endocarp. The epicarpic cells are vacuolated, compressed and tangentially elongated. The mesocarp becomes 5–7 layered thick and the vacuolation and disorganization of its cells are simultaneous with the fruit development. Three to five layered endocarp at mature stage possesses sclereids and fibers of diverse shapes. The dehiscence ofHibiscus sabdariffa fruit is loculicidally columnicidal.

    • Structure and development of stomata on the fruit wall ofCalotropis procera (Ait.) R. Br.

      Yash Dave P M Kuriachen

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      The epidermal characters ofCalotropis procera (Ait.) R. Br. fruit have been investigated. Stomata being present only in the outer epidermis of the epicarp, the fruit is called exostomatic. Only the perigenous type of stomata are present on the fruit wall. Stomatal abnormalities like single guard cell, aborted guard cell, contiguous stomata, paired stomata, unequal guard cells, stomatal connection with distinct tube and stomata with large meristemoid are observed. Inner epidermis shows a ‘parquetry pattern’ of its cells. The outer epidermis is hairy but the inner epidermis is atrichomal and nonstomatiferous. The cuticle is thick, with numerous striations.

    • Structure and development of fruit wall ornamentations inPergularia daemia (Forsk.) Chiov (Asclepiadaceae)

      P M Kuriachen Yash Dave

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      The follicle ofPergularia daemia (Forsk.) Chiov is ornamented with large number of branched and unbranched soft spines. The spine initiate before anthesis. It develops from the epidermal and subepidermal (ground tissue) layers of the ovary wall. A mature spine consists of an epidermis enclosing parenchymatous ground tissue with vascular strands and laticifers. Two types of trichomes, uniseriate multicellular and multiseriate multicellular, are present on the spine and fruit surface. The cuticle on the fruit surface is thick with a waxy coating. Stomata present on the fruit surface are slightly raised.

    • Histological structure of the pericarp ofAbelmoschus esculentus L. (Moench) in relation to growth and dehiscence

      J A Inamdar T V Ramana Rao Yash Dave

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      The pericarp ofAbelmoschus esculentus is differentiated into 3 distinct zones—the epicarp, mesocarp and endocarp. The epicarp is a product of outer epidermis and hypodermal parenchyma of the ovary wall. The growth of epicarp results from increase in the volume of cells of the periphery below the outer epidermis. In a mature pericarp the epicarpic cells become enlarged, vacuolated, thick walled and resemble collenchyma. The parenchymatous mesocarp is derived from the inner zone of ground parenchyma of the ovary wall. The large and vacuolated parenchyma of the developing mesocarp appear disorganised at maturation of the fruit. An interwoven pattern of endocarp is composed of sclerenchyma and develops from the inner epidermis together with inner sub-epidermis of the ovary wall. The dehiscence of ripe capsule ofAbelmoschus esculentus is the result of differentiation of mechanically weak cells in the median plane of each carpel, as well as in the central column and porus endocarp.

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