NUMERICAL TAXONOMIC STUDIES OF GENUS PYRUS USING BOTH CHEMICAL AND BOTANICAL CHARACTERS
NUMERICAL TAXONOMIC STUDIES OF GENUS PYRUS USING BOTH CHEMICAL AND BOTANICAL CHARACTERS
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DOI：
10.1111/j.1095-8339.1973.tb01734.x
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发表时间：
1973-01-01
影响因子：
2.4
通讯作者：
WESTWOOD, MN
中科院分区：
文献类型：
--
作者：
CHALLICE, JS;WESTWOOD, MN
根据29个化学性状、22个植物学性状和51个性状的综合分类结果，对梨属植物进行了计算机分类，其中化学性状和植物学性状的综合分类结果与已知的地理分布最吻合。在化学或植物学特征被分别使用的地方，分类包含了严重错位的物种。根据所有51个性状进行的数量分类支持将该属划分为4个主要种群：东亚豌豆梨、果实较大的东亚梨、北非梨和欧洲及西亚梨。鸭梨被认为是东亚豌豆梨、东亚大果梨和欧洲及西亚梨之间的联系纽带。并对梨属种间的系统发育关系作了一些推测。
Of three computer-generated classifications ofPyrusspecies, produced respectively from 29 chemical characters, 22 botanical characters and all 51 characters taken together, the classification based upon both chemical and botanical characters agrees best with the known geographical distributions of the species. Where either chemical or botanical characters are separately employed, the classifications contain seriously misplaced species. The numerical classification based upon all 51 characters lends some support to the division of the genus into four principal groups of species: the East Asian pea pears, the larger-fruited East Asian pears, the North African pears and the European and West Asian pears.P. longipes, P. betulifoliaandP. cordataare considered as being connecting links between the East Asian pea pears, the larger-fruited East Asian pears and the European and West Asian pears. Some speculations are made on the phylogenetic relationships amongPyrusspecies.