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GERMINATION OF SACHA INCHI, PLUKENETIA VOLUBILIS L. (MCBRIDE, 1951) (MALPIGHIALES, EUPHORBIACEAE) UNDER FOUR DIFFERENT CONDITIONS

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Author(s): RAFAEL LA ROSA | JANE QUIJADA

Journal: The Biologist (Lima)
ISSN 1816-0719

Volume: 11;
Issue: 1;
Start page: 9;
Date: 2013;
Original page

Keywords: germination | in vitro | in vivo | Sacha Inchi | testa

ABSTRACT
Seeds of Plukenetia volubilis L. “Sacha Inchi” have a great economic value because oilseeds have a higher content of unsaturated fatty acids, being especially rich in omega 3, which is important for health and nutrition. Given this, the objective of the present study was to determine the conditions appropriate for the germination and development of P. volubilis. We tested four treatments, three of which were under in vivo conditions. The first treatment used fine moss as a substrate, sand, agricultural soil and humus for the second treatment, sand, sawdust and filter paper for the third treatment, and in vitro conditions for the fourth treatment. We used 40 seeds from Ucayali, Perú and 40 from Tarapoto, Perú for each treatment, dividing 20 seeds for extraction and 20 without extraction of the seed coat. We evaluated percentage of germination, the degree of contamination, and the index of germination rate. We found the best values in the first treatment, both with and without scarification; for fourth treatment better results were for seeds without a seed coat. Moreover, we found that germination in all treatments was better in seeds without seed coat. There is a negative effect of the seed coat in germination, as it acts as a barrier in water absorption and gas exchange.
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