Abstract
Cryptovivipary was studied in the mangrove Aegiceras corniculatum (L.) Blanco from western India. Na, K, Ca, Cl, Mg and P were measured in seedling parts at three developmental stages. Chloride ion uptake and distribution was followed by use of the radioisotope 36Cl, taken up through the plant stem. Photosynthate distribution was followed from leaves to fruits and seedling parts using the radioisotope 14C, applied to an adjacent leaf as a buffered bicarbonate solution.
It was found that the cryptoviviparous seedlings of A. corniculatum were nutritionally dependent on the parent and that this dependence was greatest during early seedling development. At all stages the translocated carbon was most concentrated in the embryo. Evidence from 36Cl experiments indicated that there are tissue barriers on the ion transport at two sites: between the stalk/calyx and the fruit, and between the seed coat and embryo. Chloride analyses of seedlings in nature supported the 36Cl uptake studies. Translocation of Cl to the seedlings was maximal toward maturity when they are developing salt tolerance against the time when they are shed and must grow on saline soil.
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Bhosale, L.J., Shinde, L.S. (1983). Significance of cryptovivipary in Aegiceras corniculatum (L.) Blanco. In: Teas, H.J. (eds) Biology and ecology of mangroves. Tasks for vegetation science, vol 8. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-0914-9_14
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DOI: https://doi.org/10.1007/978-94-017-0914-9_14
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