Biosystematic studies on Adenophora potaninii Korsh.complex(Campanulaceae) V.A taxonomic treatment  

作　　者：Song GE De-Yuan HONG 

机构地区：[1]State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China

出　　处：《Journal of Systematics and Evolution》2010年第6期445-454,共10页植物分类学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (39600009)

摘　　要：Adenophora is an extremely variable genus, and its taxonomy is very controversial. Of the genus, Adenophora potaninii complex, including A. potaninii, A. bockiana, A. wawreana, A. lobophylla, A. biformifolia, A. polydentata, and A. wawreana var. lanceifolia, is a typical group with different taxonomical treatments due to high level of morphological diversity. We carried out extensive biosystematic studies based on population sampling, transplantation experiments and offspring tests, cluster analysis, and a crossing experiment. The results reveal four main findings. （i） Leaf forms of the A. potaninii complex were extremely polymorphic; the leaf form of A. potaninii and A. bockiana, and that ofA. wawreana and A. biformifolia could be found, respectively, on a single population or among the offsprings of a single plant. （ii） Cluster analysis and a crossing experiment indicated that A. bockiana and A. polydentata could not be separated from A. potaninii, nor A. biformifolia from A. wawreana. （iii） Adenophora potaninii and A. wawreana were gradational in morphology and their compatibility value was slightly reduced compared to that within each entity. （iv） Adenophora lobophylla was distinct from the other members of the complex in shape and size of corolla, relative length of style, and shape of capsule. This species was incompatible reproductively with the other members of the complex, but partly compatible with A. stenanthina, a species in another section. Therefore, we recognized only one species with two subspecies in the complex, A. potaninii subsp. potaninii and subsp, wawreana, moved A. lobophylla out of the complex, and reduced all the other names as new synonyms.Adenophora is an extremely variable genus, and its taxonomy is very controversial. Of the genus, Adenophora potaninii complex, including A. potaninii, A. bockiana, A. wawreana, A. lobophylla, A. biformifolia, A. polydentata, and A. wawreana var. lanceifolia, is a typical group with different taxonomical treatments due to high level of morphological diversity. We carried out extensive biosystematic studies based on population sampling, transplantation experiments and offspring tests, cluster analysis, and a crossing experiment. The results reveal four main findings. （i） Leaf forms of the A. potaninii complex were extremely polymorphic; the leaf form of A. potaninii and A. bockiana, and that ofA. wawreana and A. biformifolia could be found, respectively, on a single population or among the offsprings of a single plant. （ii） Cluster analysis and a crossing experiment indicated that A. bockiana and A. polydentata could not be separated from A. potaninii, nor A. biformifolia from A. wawreana. （iii） Adenophora potaninii and A. wawreana were gradational in morphology and their compatibility value was slightly reduced compared to that within each entity. （iv） Adenophora lobophylla was distinct from the other members of the complex in shape and size of corolla, relative length of style, and shape of capsule. This species was incompatible reproductively with the other members of the complex, but partly compatible with A. stenanthina, a species in another section. Therefore, we recognized only one species with two subspecies in the complex, A. potaninii subsp. potaninii and subsp, wawreana, moved A. lobophylla out of the complex, and reduced all the other names as new synonyms.

关 键 词：Adenophora potaninii BIOSYSTEMATICS POPULATIONS species complex taxonomy. 

分 类 号：S567.502[农业科学—中草药栽培] Q19[农业科学—作物学]