Browsing by Author "Joshi, A.C."
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PublicationNote A case of reversed polarity in the embryo-sac(1935) Joshi, A.C.; Venkateswarlu, J.[No abstract available]PublicationArticle A note on the determination of sex of plantain flowers(1939) Joshi, A.C.The sex of the flowers of plantain depends upon the amount of nourishment available. When there is plenty of nourishment, female flowers and fruits are formed. When the plants are exhausted and only a small amount of nourishment is available for the growing flowers, the latter differentiate as male flowers. © 1939, Indian Academy of Sciences. All rights reserved.PublicationNote A note on the structure and development of the embryo-sac, ovule, and fruit of tamarix dioica roxb(1936) Joshi, A.C.; Kajale, L.B.[No abstract available]PublicationLetter PublicationLetter PublicationArticle Contributions to the embryology of the Menispermaceæ - I. Cocculus villosus DC.(1937) Joshi, A.C.The structure and development of the gynœcium, ovule and embryosac of Cocculus villosus DC. has been studied. There are generally three fertile carpels in a flower, but a fourth one is frequently present. The extra carpel is generally abortive. The carpels are arranged in a spiral manner on the floral axis. In the beginning two ovules develop in each carpel. Later the lower one of these is suppressed. These observations show that the few-carpellary gynoecium of Coccufnts villosus has been derived by reduction from a multicarpellary structure and the uni-ovular carpel from a bi-ovular type. The functional ovule is amphitropous up to the development of the embryo-sac, but becomes campylotropous during the formation of the endosperm. There are two integuments, which remain free from each other and the nueellus up to the mature embryo-sac stage. The micropyle is formed only by the inner integument. The nueellus is characterised by the development of a small epidermal cap. The primary archesporium is restricted to a single cell. A primary wall cellos cut off. The megaspore mother cell gives rise to a linear tetrad of megaspores. The chalazal megaspore alone is functional. The development of the embryo-sac corresponds to the normal type. The polar nuclei fuse at an early stage. The synergids possess small hooks and show a clear filiform apparatus in the later stages. The antipodal cells develop large vacuoles. © 1937 Indian Academy of Sciences.PublicationArticle Embryological studies in the lythraceae - II. Lagerstrœmia Linn(1935) Joshi, A.C.; Venkateswarlu, J.[No abstract available]PublicationArticle Embryological studies in the Lythraceæ - I. Lawsonia inermis Linn(1935) Joshi, A.C.; Venkateswarlu, J.[No abstract available]PublicationArticle Embryological studies in the Lythraceæ.-III(1936) Joshi, A.C.; Venkateswarlu, J.[No abstract available]PublicationLetter Exceptional behaviour of the synergids in the embryosac of angiosperms [8](1933) Joshi, A.C.; Venkateswarlu, J.[No abstract available]PublicationArticle Fertilisation and seed development in Amarantaceae(1937) Joshi, A.C.; Kajale, L.E.[No abstract available]PublicationArticle PublicationLetter PublicationArticle PublicationLetter PublicationArticle Secondary thickening in the stem and root of Stellera Chamaejasmae Linn(1935) Joshi, A.C.[No abstract available]PublicationNote Some abnormal flowers of argemone mexicana and their bearing on the morphology of the gynoecium of papaveraceae(Oxford University Press, 1939) Joshi, A.C.Abnormal flowers of Argemone mexicana are described in which the gynoecium has been transformed into a cup with lobed margin or into free leafy carpels. The number of lobes or leafy carpels in such gynoecia is found to vary from three to five. This agrees with the general view of systematists regarding the number of carpels composing the gynoecium in this species, and is against the views of Saunders and Dickson who postulate twice as many carpels. © 1939 Oxford University Press.PublicationArticle PublicationNote The nature of the ovular stalk in polygonaceae and some related families(Oxford University Press, 1938) Joshi, A.C.[No abstract available]PublicationLetter Vascular supply of the stamens and ovules of Gloriosa superba [8](1939) Joshi, A.C.[No abstract available]
