Vol. 47

Title:
Chionanthus virginicus: Embryo Culture vs. Traditional Germination

Authors:
Charlotte R. Chan and Robert D. Marquard

pp: 610-612

Abstract:
INTRODUCTION

Chionanthus virginicus is traditionally propagated by seed sown outdoors, with germination taking 2 years to break double dormancy. Cuttings have not been as successful (Dirr, 1987; Nicholson, 1990), and grafting to Fraxinus excelsior rootstock (Dirr,1994) or F. ornus (Fagan,1980; Young, 1992) has met with limited success. Work with embryos cultured on a gibberellic-acid-enhanced medium (Redcay and Frett, 1990) and with removal of the epidermis, pericarp, and endocarp to accelerate germination (Carpenter et.al.,1991) suggested a possible method to overcome the dormancy and to compress the time to obtain marketable plants. The objective of this investigation was to compare traditionally propagated and embryo-cultured C. virginicus for percent germination, plant size, and vigor over a duration of 2 years.

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