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Adventitious rooting in shoot cuttings of Azadirachta indica and Pongamia pinnata

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Abstract

Adventitious rooting in shoot cuttings of neem (Azadirachta indica) and karanj (Pongamia pinnata) was investigated in different seasons. The influence of auxins and B-vitamins (neem only) was evaluated. Maximum rhizogenesis coincided with the emergence of new sprouts i.e. February (neem) and March (karanj). Considering both rooting percentage and root biomass, IBA was the most effective auxin tested. Compared to auxin free controls, IBA (1000 ppm in neem and 800 ppm in karanj) significantly increased adventitious rooting percentage (80 to 100 % respectively), the numbers of roots and root biomass for both species. In neem, B-vitamin treatment yielded 40–50% rooting for cuttings. This was significantly greater than rooting for controls but equivalent to IAA treatments. In neem, some of the cuttings treated with 2000–3000 ppm IBA had well developed root systems without any sprouts. In karanj, all auxin treatments promoted sprouting. The level of total soluble sugars in the rooting zone of neem and karanj was higher in non-rooted than rooted cuttings.

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Authors and Affiliations

  1. Tropical Forest Research Institute, Mandla Road, Jabalpur –, 482 021, India

    K. Palanisamy, S. A. Ansari, Pramod Kumar & B. N. Gupta

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  1. K. Palanisamy
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  2. S. A. Ansari
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  3. Pramod Kumar
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  4. B. N. Gupta
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Palanisamy, K., Ansari, S.A., Kumar, P. et al. Adventitious rooting in shoot cuttings of Azadirachta indica and Pongamia pinnata . New Forests 16, 81–88 (1998). https://doi.org/10.1023/A:1006586603388

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  • DOI: https://doi.org/10.1023/A:1006586603388

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