Naturally occurring auxins and inhibitor and their role in fruit growth and drop of mango ‘Dashehari’ |
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Authors: | Satya Prakash Sant Ram |
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Institution: | Department of Horticulture, College of Agriculture, G.B. Pant University of Agriculture & Technology, Pantnagar (Nainital), U.P. India |
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Abstract: | The pattern of fruit growth in mango ‘Dashehari’ (Mangifera indica L.) was sigmoid. Pollinated ovaries and young fruits dropped in two main waves: 0–14 days and 28–35 days. A third wave, a mild one, was continuous and irregular from 35 days after pollination to maturity of the fruit.One acidic and one non-acidic auxin and one acidic inhibitor were detected in the immature fruit. The increase in the levels of auxin corresponded with a period of rapid fruit growth, while high levels of inhibitor tended to correspond with a high rate of fruit drop from pollination to 42 days. The auxins appear to play a major role in the growth of the fruit, whereas the inhibitor appears to cause fruit drop. |
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Keywords: | endogenous auxins endogenous inhibitor fruit drop fruit growth mango ABA Abscisic acid IAA Indoleacetic acid IAN Indoleacetonitrile LSD Least significant difference v/v volume/volume |
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