Authors: Qing Liu; Nan-Xian Zhao; Gang Hao

Source: Grana, Volume 43, Number 4, December 2004 , pp. 238-248(11)

Publisher: Taylor and Francis Ltd

Abstract:

Pollen grains of 57 species (representing 42 genera) of the Chloridoideae have been investigated using light, scanning and transmission electron microscopy. Two aperture patterns and nine exine patterns are distinguished using SEM and TEM. These are categorized into five pollen types. Two pollen types are previously not recorded in Gramineae. A key for the identification of these pollen types is presented. Generally, pollen characters have limited systematic value in recognizing taxa at generic level or above in the Chloridoideae. An evolutionary trend is proposed that awaits verification by further systematic study. Pollen characters can be used as indicators for the areas of origin and distribution of the Chloridoideae.

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Document Type: Research article

DOI: http://dx.doi.org/10.1080/00173130410000776

Publication date: 2004-12-01

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