Pollen Morphology and Generic Phylogenetic Relationships in Ophiopogonoideae (Liliaceae)

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Pollen Morphology and Generic Phylogenetic Relationships in Ophiopogonoideae (Liliaceae)

Liang Song-Yun, Dai Lun-Kai

Received:1900-01-01 Revised:1900-01-01 Online:1992-09-10 Published:1992-09-10
Contact: Liang Song-Yun

Abstract

Abstract:

In the present work, pollen grains of 3 species of Liriope, 24 species

of Ophiopogon and 2 species of Peliosanthes were examined under scanning electron

microscope, Among them 4 species were also observed under transmission electron

microscope.

The observation (Table 3)shows that Liriope and Ophiopogon distinctly differ

from Peliosanthes in the exine ornamentation and structure, They may be divided

into two types: 1. Rugulate-perforate, ektexine with perforate tectum in Liriope

and Ophiopogon. 2. Verrucate, Verracae unequal in size, ektexine intectate in

Peliosanthes. Pollen morphology shows the close affinity between Liriope and

Ophiopogon, but they are very far from Peliosanthes. The correlation between pol-

len and gross morphology in Liriope, Ophiopogon and Peliosanthes are stated and

their evolutionaly trends are discussed in this paper. The pollen characters support

the placement of Liriope and Ophiopogon in one tribe—Ophiopogoneae, and

Peliosanthes in another tribe—Peliosantheae. Peliosanthes is more advanced

than Liriope and Ophiopogon.

Key words: Liriope, Ophiopogon, Peliosanthes, Pollen morphology, exine ultrastructure

Liang Song-Yun, Dai Lun-Kai. Pollen Morphology and Generic Phylogenetic Relationships in Ophiopogonoideae (Liliaceae)[J]. .

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Pollen Morphology and Generic Phylogenetic Relationships in Ophiopogonoideae (Liliaceae)

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