Pollen Morphology of Plants from the Hengduan Mountains and Their Ecological Significance

doi:10.7677/ynzwyj201515044

Abstract

Abstract:

Pollen morphology of selected taxa from the Hengduan Mountains, Southwest China are investigated in the present study. Fortyeight taxa (flowering in the summer, 46 species and 2 varieties) of 43 genera belonging to 27 families were observed by light and scanning electron microscopy. Pollen morphology is described in detail. Two pollen shapes are mainly found in these species: subprolate to prolate (271%) and prolate (25%). Spheroidal, subspheroidal to subprolate, suboblate and tetrad shapes can also be found in some species. Aperture type is mostly tricolporate, with a percentage of 438, and also contains tricolpate, pantoporate, stephanocolpate, 3colporoid, 6 colpate, monocolpate. The most common ornamentation is finely reticulate, with a percentage of 50. Other exine ornamentations, such as coarsely reticulate, finely granulate, smooth, spinulose are also observed. The palynological documentation of these species will provide the modern palynological basis for paleopalynological studies of the Quaternary Strata. On the basis of pollen morphology characters, identification features of some species in the same families were discussed according to the results of cluster analysis used by SPSS. The ecological significance was also discussed based on the ecological properties of these taxa.

Key words: Pollen morphology, Ecological significance, Hengduan Mountains

CLC Number:

Q 944

ZHENG Xin-, MIN Yun-Jiang-, XU Bo-, SUN Hang-, ZHOU Zhong-Ze. Pollen Morphology of Plants from the Hengduan Mountains and Their Ecological Significance[J]. Plant Diversity, 2015, 37(06): 657-682.

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