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在对有关形态特征进行分析之后.作者发现具三浅裂或三深裂基生叶,和较薄、脱落萼片的脱萼鸦跖花是鸦跖花属的原始种,而具五角形,三深裂基生叶的变叶三裂碱毛莨和裂叶碱毛莨是碱毛莨属的原始分类群.写出新修订的我国碱毛莨属属下分类群检索表;作者认为聚合果的形状是碱毛莨属的重要特征,并用来将此属的种分为二群,描述了碱毛莨属2新组,2新变种,水毛莨属1新变种.做出碱毛莨属2新组合报导了水毛莨属二种的新分布。 相似文献
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国产毛莨属11种及其4个近缘属5种植物的细胞学研究 总被引:3,自引:0,他引:3
研究了国产毛莨属RanunculusL.11种及其4个远缘属-美花草属CollianthemunC.A.Meyer,侧金盏花属AdonisL.、碱毛莨属Halerpestes E.Greene,水毛莨属BatrachiumS.F.Gray5种植物的洒色体数目和形态。发现美花草C.pinpinelloides(D.Don)Hook.f.et THoms.,川滇毛莨R.potaninii Kom.,深齿毛莨R.popovii var.stracheyanus(Maxim.)W.T.Wang,高原毛莨R.tanguticus(Maxim.)Ovcx., 石龙芮R.sceleratusL.,西南毛莨R.ficariifolius Levl.et Vant.、褐鞘毛莨R.sinovaginatus W.T.Wang、三裂碱毛莨H.tricuspis(Maxim.)Hand.-Mazz.和碱毛莨H.sarmentosa(Adams)Kom.9种植物为染色体基数x=8的四倍体(2n=4x=32);短注侧金盏花A.brevistyla Franch.、丝叶毛莨R.nematolobus Hand.-Mass.、棱喙毛莨3R.trigonus Hand.-Mazz.、 茴茴蒜R.chinensis Bunge4种植物为染色体基数x=8的二倍体(2n=2x=16);毛莨R.japonicus Thunb.、黄毛莨R.laetus Wall.2种植物为染色体基数x=7的二倍体(2n=2x=14);水毛莨B.bungei(Steud.)L.Liou有二倍体(2n=2x=16)和三倍体(2n=3x=24)两种细胞型。根据染体资料,讨论了上述5属的属间关系和毛莨属中一些种的种间关系。 相似文献
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在对有关形态特征进行分析之后.作者发现具三浅裂或三深裂基生叶,和较薄、脱落萼片的脱萼鸦跖花是鸦跖花属的原始种,而具五角形,三深裂基生叶的变叶三裂碱毛莨和裂叶碱毛莨是碱毛莨属的原始分类群.写出新修订的我国碱毛莨属属下分类群检索表;作者认为聚合果的形状是碱毛莨属的重要特征,并用来将此属的种分为二群,描述了碱毛莨属2新组,2新变种,水毛莨属1新变种.做出碱毛莨属2新组合报导了水毛莨属二种的新分布。 相似文献
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Yu-Hang Wang Jin-Ming Chen Chao Xu Qing-Feng Wang Timothy J. Motley 《Aquatic Botany》2010,92(3):221-225
Inter-simple sequence repeat (ISSR) markers were used to investigate the genetic variation of 14 populations of Batrachium bungei (Ranunculaceae) from the Hengduan Mountains of China, which is a global biodiversity region that is poorly studied. A total of 75 bands with 52 polymorphic loci were generated from the ten primers used in this study. A total of 155 different genotypes or clones were identified among the 442 samples. A low level of genetic diversity within population and high genetic differentiation among populations were revealed in this study. Factors, such as inbreeding, clonal growth, bottlenecks, population isolation and founder events during postglacial recolonizations, might have played important roles in shaping the population structure of B. bungei. 相似文献
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