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Proceedings of the International Plant Propagator's Society

Vol. 46

Germination and Seedling Development in Pawpaw Asimina triloba

C.L.H. Finneseth, D.R. Layne and R.L. Geneve

pp: 605

Pawpaw [Asimina triloba (L.) Dunall is a small, deciduous fruit tree indigenous to most of the eastern United States. It is the only temperate member of the tropical Annonaceae or Custard Apple family. As a member of this primitive family, its large seeds have a characteristic ruminate endosperm and underdeveloped embryo.

Seed anatomy and seedling development have been outlined for a limited number in the Annonaceae, family (Corner, 1948, Hayat and Canright, 1968). Ovule and seed development as well as seed morphology have been described in pawpaw (Mohana Rao, 1982, Lampton, 1957), but there are no descriptions of morphological changes during seed germination or seedling development. This study was designed to describe important developmental stages during germination and seedling development of pawpaw.

Seeds were extracted from ripe fruit (Keedysville Orchard, University of Maryland, Keedysville, MD), packed in moist sphagnurn moss and stored in plastic bags at 4C until planting

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