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GERMINATION OF SEEDS OFAZADIRACHTA INDICAENHANCED BY ENDOCARP REMOVAL

William R. Chaney, Douglas M. Knudson

Open publisher page 5 citations

Abstract

SUMMARY Seeds of Azadirachta indica A. Juss. were collected from trees in Haiti and the effect of pre-germination treatments were investigated in the laboratory at the Instituto Superior de Agricultura, Santiago, Dominican Republic. Soaking seeds in water for up to 3 days had no effect on germination. Removal of the endocarp improved germination significantly even when seeds were air-dried. Possible physiological mechanisms for the loss of seed viability and the role of the endocarp are discussed including the development of a physical barrier to water and/or gas exchange, inhibitors, and metabolism of fatty acids in the seed.

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SUMMARY Seeds of Azadirachta indica A. Juss. were collected from trees in Haiti and the effect of pre-germination treatments were investigated in the laboratory at the Instituto Superior de Agricultura, Santiago, Dominican Republic. Soaking seeds in water for up to 3 days had no effect on germination. Removal of the endocarp improved germination significantly even when seeds were air-dried. Possible physiological mechanisms for the loss of seed viability and the role of the endocarp are discussed including the development of a physical barrier to water and/or gas exchange, inhibitors, and metabolism of fatty acids in the seed.

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Available abstract

SUMMARY Seeds of Azadirachta indica A. Juss. were collected from trees in Haiti and the effect of pre-germination treatments were investigated in the laboratory at the Instituto Superior de Agricultura, Santiago, Dominican Republic. Soaking seeds in water for up to 3 days had no effect on germination. Removal of the endocarp improved germination significantly even when seeds were air-dried. Possible physiological mechanisms for the loss of seed viability and the role of the endocarp are discussed including the development of a physical barrier to water and/or gas exchange, inhibitors, and metabolism of fatty acids in the seed.

Key concepts: Azadirachta, Germination, Horticulture, Biology, Botany

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