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- W2029690831 abstract "The ontogeny of the septal nectary in Dipcadi montanum and Allium cepa is studied employing histochemical staining techniques for the localization of polysac-charides, nucleic acids and proteins. Morphologically, the septal nectary makes its appearance because of the incomplete union of the adjacent carpels at this region. To begin with, the nectary cells resemble their neighbouring cells of the septum in having low level of polysaccharides, but rich RNA and proteins. The starch grains accumulated in the nectary cells, at the 4-nucleate embryo sac stage, of D. montanum get degraded as the female gametophyte grows and attains maturity. The cytoplasmic RNA and proteins are at a higher level in the nectary cells than in their neighbouring cells, at 4-nucleate, 8-nucleate and mature embryo sac stages. These substances are diminished and lost completely in the cells of the septal nectary of the developing fruit. Thus the increase in the activity of the septal nectary seems to have a direct relation with the development of the female gametophyte and decreases gradually to cease finally in the post-fertilization stages of development. The secretion of nectar from the septal nectary and insect pollination are apparently biological coincidents." @default.
- W2029690831 created "2016-06-24" @default.
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- W2029690831 date "1976-01-01" @default.
- W2029690831 modified "2023-09-23" @default.
- W2029690831 title "A Histochemical Study of Floral Nectaries in <i>Dipcadi montanum</i> Dalz. and <i>Allium cepa</i> L" @default.
- W2029690831 cites W1855731855 @default.
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- W2029690831 doi "https://doi.org/10.1508/cytologia.41.453" @default.
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