Comparison of Mating System in Populations of Gleditsia japonica var. koraiensis

다국어 초록 (Multilingual Abstract)

The mating systems of two groups of natural populations of Gleditsia japonica var. koraiensis inKorea were determined using allozyme analysis. The result suggests that G. japonica var. koraiensis is pre-dominantly outcrossing. The tm values of eight populations in Korea varied from 0.667 (Mdh-1) to 0.938 (Idh-1), giving an average 0.820. Population and individual outcrossing estimates were associated with flowering tree density or degree of spatial isolation. The reason for relatively low outcrossing rates of some populations could be atributed to reduction of efective population sizes of sib for the medicine, small population size, and isolation of flowering mature tres. The heterozygote exceses were observed in some natural populations, whereas other populations exhibited varying degrees of inbreeding a nd heterozygotes deficit. Thus, selection against homo-zygotes operated in the progeny populations throughout the life cycle.

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