Electrophoretic Studies in Riccia Subgenus Riccia (Hepaticopsida: Ricciaceae)
Electrophoretic Studies in Riccia Subgenus Riccia (Hepaticopsida: Ricciaceae)
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Riccia 亚属 Riccia（肝叶纲：Ricciaceae）的电泳研究
DOI：
10.2307/3242774
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发表时间：
1988
期刊：
影响因子：
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通讯作者：
Richard M. Dewey
中科院分区：
文献类型：
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作者：
Richard M. Dewey
本文报道了美国产里恰亚属里恰14个种间和种内苹果酸脱氢酶（MDH）和过氧化物酶（PER）的电泳变异。这些物种中有13个表现出独特的电泳表型。不同的MDH和PER表型和不同的倍性水平支持R。dictyospora（n = 8）和R. mcallisteri（n = 16）为独立种。种内MDH和PER的变异性一般较低，但差异较大。基于地理的遗传差异在三个物种中是明显的。里恰湖由小的叶状苔类和高度退化的孢子体组成。两个亚属：里恰亚属（A. Br.）布雷，是公认的。里恰亚属的种是陆生的，通常栖息在阳光充足的地方，这些地方由于土壤浅、干旱或周期性干扰而开阔。
Electrophoretic variability in malate dehydrogenase (MDH) and peroxidase (PER) was surveyed among and within 14 described species of Riccia subgenus Riccia in the United States. Distinctive electrophoretic phenotypes were exhibited by 13 of these species. Distinctive MDH and PER phenotypes and contrasting ploidy levels support the recognition of R. dictyospora (n = 8) and R. mcallisteri (n = 16) as distinct species. Generally low but nevertheless contrasting levels of intraspecific MDH and PER variability exist among species. Geographically based genetic differ- entiation is evident in three species. Riccia L. is composed of small thallose liverworts with highly reduced sporophytes. Two subgenera, Riccia and Ricciella (A. Br.) Boulay, are generally recognized. Species of subgenus Riccia are terrico- lous and often inhabit sunny sites that are open due to shallow soil, aridity, or periodic disturbances.