Pollen micromorphology of selected Caesalpinioideae taxa and its taxonomic role
Genetic Resources and Crop Evolution(2024)
Abstract
This study presented the pollen micromorphology of some Caesalpinioideae species sampled from different geographical regions of Hainan Island south China and Pakistan and observed under scanning electron microscope (SEM). The multivariate principal component analysis (PCA) was performed by using five variables to show the relationship among the species. The results showed that heteromorphy in pollen features; i.e., small and large size pollen, outline (circular, triangular, elliptical), shape (spheroidal, sub-spheroidal, oblate, prolate), detail of the apocolpium region (small, large), type of endoapertures and exine sculpturing (reticulate, finely reticulate, macro-reticulate, perforate, psilate) can help significantly in the discrimination of taxa. The PC-1 showed significant variation (60.06
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Key words
Caesalpinioideae,Palynotaxonomy,Scanning electron microscopy,Multivariate analysis
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