Analysis of Natural Hybrid Between Nepenthes gymnamphora Reinw. ex Nees with Nepenthes inermis Danser Based On Geometric Morphometrics

Firham Yasra, Syamsuardi Syamsuardi, Nurainas Nurainas


Abstract - Recently, based on preliminary observations in the field of Nepenthes populations found in Mount Kunyit, Kerinci Regency, Sumatra, several Nepenthes species were found to live sympatrically, namely N. gymnamphora with N. inermis. On the other hand, a population of Nepenthes that is assumed to be a natural hybrid of the two species was also found. This unidentified taxon is very different from other Nepenthes in the habitat because it has intermediate pitcher characters with its parents. However, it is not yet known which taxon is the parent. In this study, the approach used was geometric morphometric analysis. The images were photographed from two different views, i.e., top view (lid) and front view (body with peristome). A total of 17 images (5 images from N. gymnamphora, 6 images from N. inermis and 6 images from its natural hybrid. All analyses used Momocs Package in R Statistical Software. The results of this study are variations in the shape of the pitcher of putative natural hybrids between N. gymnamphora and N. inermis species in the shape of the pitcher in front view and the size of the pitcher lid in lid view. Nepenthes individuals that have intermediate shape characters with both parents (N. gymnamphora and N. inermis) are natural hybrid individuals.


Key words - Geometric morphometrics, intermediate, Natural hybrid, Nepenthes, PCA.

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