Histochemical studies on male gametophyte of Adansonia digitata Linn. - An endangered species of Karnataka, India.

Chaitra B. Negalur

Abstract


The distribution of proteins in the developing anthers of Adansonia digitata Linn. was investigated. The results indicate that the possible importance of histochemical substances which are present in the tapetum and meiocytes and their derivatives in pollen formation has been correlated. The proteins and their metabolism seems to be essential for the development of fertile pollen. The anthers are tetrasporangiate. The development of anther wall follows the basic type, the epidermis, endothecium, 2-3 middle wall layers and tapetum. The tapetum is bilayered and glandular with multinucleate structure shows rich content of proteins at all stages of its development. At early meiotic of the anther development the meiocytes are rich in total proteins. The cytokinesis is of simultaneous type which results in the formation of tetrahedral tetrads. At subsequent stages of meiosis, the concentration of protein in the meiocytes reduces. The early microspores the quantity of proteins decline and subsequently at pollen grain stage, proteins gradually increase and persists in the mature pollen. The present work seems to be is first contribution to the knowledge of protein composition in the developing anther of Adansonia digitata Linn.

Keywords


Adansonia digitata Linn.; Microsporogenesis; Meiocytes; Proteins; Tapetum; Tetrads; Pollen grains.

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DOI: https://doi.org/10.21746/aps.2016.01.001

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