PJB-2025-74
Segregation of Polygonum (Tourn) L. from Persicaria (Tourn) L. using morphological characteristics
Usama K. Abdel-Hameed
Abstract
The subdivision of the heterogeneous genus Polygonum s.l. into smaller units has been necessary for a long time. The main objectives of the present study are to assess the ability of morphological characters to contribute to the segregation of Polygonum (Tourn) L. from Persicaria (Tourn) L., in addition to conduct principal component analysis to know the most valuable morphological characters that may be used for this separation. The morphological characters of four species of Persicaria and six species of Polygonum were extracted and subjected to phenetic analyses and principal component analysis that was performed for detecting the most important characters differentiating the studied taxa. It is concluded that the chosen morphological characters were important in species delimitation where about half (45.35%) of the total morphological variations were explained by the first two principal components indicating that the morphological characters showed high variability, which is useful for discrimination, and these characters shared in drawing the phenetic relationships within the genera of Polygonum and Persicaria .
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