Observation of pollen morphology of 16 Vicia accessions using scanning electron microscopy

doi:10.11686/cyxb20150114

Abstract

Abstract: Plants of the genus Vicia are readily cultivated in alpine and high-altitude areas, such as the Tibetan plateau in China, where they are used as a source of protein. There are about 190 species in this genus, and four subgenera: Vicia, Cracca, Ervum and Faba. We studied 16 Vicia accessions sourced from China, USA, Turkey, Syria, and 7 other countries. The pollen morphology of the 16 accessions was observed by scanning electron microscopy. Pollen of Vicia is single-grained, with three lobes and a triangular outline in polar view. The pollen studied ranged in shape from prolate-spheroidal to prolate andoblate in equatorial view with three channel apertures reaching both poles. Polar axis length was (9.60±1.52)-(30.40±2.07) μm, and equatorial axis length was (11.80±0.84)-(38.20±0.84) μm. Three types of pollen surface ornamentation were observed: reticulate, brain-like and warty. Furthermore, depending on the degree of protrusion, the reticulation type can be divided into coarse and fine reticulation sub-types. In this study,the pollen morphologies of 16 Vicia accessions were observed in detail, and their taxonomic characteristics are discussed as a basis for categorising the diversity in the Vicia genus.

LIU Peng, MA Lichao, WANG Yu, LIU Zhipeng. Observation of pollen morphology of 16 Vicia accessions using scanning electron microscopy[J]. Acta Prataculturae Sinica, 2015, 24(1): 107-114.

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