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木瓜属及其近缘属的花粉形态及系统学意义(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2014年增刊
Page:
13-16
Column:
研究论文
publishdate:
2014-10-29

Article Info:/Info

Title:
Pollen morphology and phylogenetic significance of Pseudocydonia and related genera
Article ID:
1000-2006(2014)S1-0013-04
Author(s):
ZANG Dekui MA Yan
Forestry College, Shandong Agricultural University, Taian 271018, China
Keywords:
Pseudocydonia Chaenomeles Cydonia pollen morphology phylogenetic significance
Classification number :
Q948
DOI:
10.3969/j.issn.1000-2006.2014.S1.003
Document Code:
A
Abstract:
The pollen morphology of Pseudocydonia, Chaenomeles and Cydonia were studied with the aid of scanning electron microscope(SEM). Pollen grains were N3 P4 C3 type according to G. Erdtman’s N. P. C system, radio symmetric prolate or rarely perprolate, with the sizes of 33.24-48.27 μm(P)×18.93- 25.58 μm(E)in Chaenomeles, 37.15-42.50 μm(P)×21.74-24.86 μm(E)in Pseudocydonia, and 36.85-43.95 μm(P)×19.63-22.83 μm(E)in Cydonia. The exine sculpture was striate in Chaenomeles and Pseudocydonia (stripes irregular in the former but nearly parallel in the latter), while nearly smooth in Cydonia. The results demonstrated that palynological characters were valuable in recognition of taxa in specific and genera level and agreed with the separation of Chaenomeles and Pseduocydonia. The pollen submicroscopic characters of six species in three genera were described, and a key was compiled for them.

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Last Update: 1900-01-01