Demographic Genetics of Some Japanese Liliaceous Species

对日本百合科5种植物的田间种群的种群统计学-遗传结构进行了研究，山刺桐，贝母（Fritillaria koidzumiana Ohwi）、大百合（Cardiocrinum cordatum（Thunb.）Makino（包括变种glehni（Fr. Schm.）Hara）（一次结实多年生植物）、无柄盘花草D. Don和Disporum smilacimum A.灰色（均为一次结实假一年生植物），在本州富山县的几个地方进行了调查。对于所有五个物种，规模级结构的人口进行了调查，根据叶面积的每一个单独的植物中存在的单位抽样地块。然后，用等电聚焦法分析了各种群的过氧化物酶同工酶谱。用相异性指数法分析了在pH值3.5 ~ 9.6范围内的所有过氧化物酶带。值从野生种群的Erythronium japonicum和贝母koidzumiana，而有些偏态分布格局中检测到的心百合，繁殖植物通过生产女儿小鳞茎。另一方面，具有完全不同的种群结构的一次结实假一年生植物-一箭花，结果表明，植物种群的D.I值呈极偏态分布，所有这些不同的种群统计遗传结构都是由繁殖方式决定的（无论主要是两性融合还是无融合生殖）和育种系统（无论是主要的远系繁殖还是近亲繁殖）。

The demographic-genetic structures of field populations of five Japanese liliaceous species, i.e., Erythronium japonicum Decne., Fritillaria koidzumiana Ohwi (both typical polycarpic outbreeding perennials), Cardiocrinum cordatum (Thunb.) Makino (incl. var. glehni (Fr. Schm.) Hara) (a monocarpic perennial), Disporum sessile D. Don and Disporum smilacimum A. Gray (both monocarpic pseudo-annuals), were investigated in several localities of Toyama Prefecture, Honshu. For all five species, size-class structures of populations were investigated based on the leaf area of each individual plant present in the unit-sampling plots. Then, peroxydase isozyme patterns of each population were analyzed by the isoelectric focusing method using a thin plate of ampholine. All peroxydase bands which were detected in a pH range of 3.5 to 9.6 of ampholine were analyzed based on the dissimilarity index.Typical normal curves of the D.I. values were obtained from wild populations of Erythronium japonicum and Fritillaria koidzumiana, whereas a somewhat skewed distribution pattern was detected in those of Cardiocrinum cordatum, which propagates vegetatively by producing daughter bulblets. On the other hand, Disporum smilacinum, a monocarpic pseudo-annual with entirely different population structures, exhibited exceedingly skewed distribution patterns of the D.I values.All such different demographic-genetic structures of plant populations are most strongly determined by the method of reproduction (whether predominantly amphimictic or apomictic) and by the breeding system (whether predominantly outbreeding or inbreeding) of the particular species in question.