Studies on Pollen Morphology of Taxaceae of China

Abstract

Abstract:

The present study deals with pollen morphology of 4 genera and l0 species

of Taxaceae in gymnosperms. Pollen grains of the family are spheroidal or subsphe-

roidal, 20.8μm in diameter and with laptoma or papilla in the distal face. Exine is

two-layered, with sexine equal to nexine in thickness, but sometimes the stratification is

indistinct. The surface is scabrous or slightly granular under LM. Coarse verrucae and

fine tuberculae on pollen surface are observed under SEM. From thin section, ende-

xine is shown to have lamellate structure, and ectexine is made of verrucate elements.

In Amentotaxus argotaenia, some pollen grains show remnant saccate.

According to pollen morphology, this family may be divided into two tribes: 1,

Pseudotaxeae (including Pseudotaxus only), and 2, Taxeae (including Taxus and Torre-

ya). Owirg to the special feature of pollen grains in Amentotaxus the present author

suggests that the genus be separated from Taxaceae and raised to the level of family,

Amentotaxaceae.

Key words: Pollen morphology, Taxaceae, Taxonomy, China

Xi Yi-Zhen. Studies on Pollen Morphology of Taxaceae of China[J]. .

[1]	LI Jia, TANG He, RAO Weilong, ZHANG Lan, SUN Wenke. Influence of South-to-North Water Transfer Project on the changes of terrestrial water storage in North China Plain [J]. , 2020, 37(6): 775-783.
[2]	GU Yongjian, LI Yumei, HAN Long, SU Xin. Relationships between surface soil magnetic susceptibility and modern climatic factors in eastern China and their environmental significance [J]. , 2019, 36(4): 498-509.
[3]	BI Kaiyi, NIU Zheng, HUANG Ni, KOU Peiying. Effects of road network on landscape ecological risk: a case study of “China and Indochina Peninsula economic corridor” [J]. , 2019, 36(3): 347-353.
[4]	YANG Zhen, LEI Jun. Spatio-temporal pattern and influencing factors of urbanization development of cities at prefecture level and above in China [J]. , 2019, 36(1): 82-92.
[5]	LIU Xianzhao, ZHANG Yong, SU Qing, LI Zhenguo, FENG Teng, SONG Yan. Gradient variation of δ¹⁵N values in herbs and its indication to environmental information in the agro-pastoral ecotone in the north of China [J]. , 2018, 35(6): 749-760.
[6]	JIA Xiaoting, LEI Jun, ZHANG Xiaolei. Social spatial structure of Urumqi City during the period of Republic of China [J]. , 2018, 35(6): 795-804.
[7]	WANG Linfeng, ZHANG Pingyu, LI He, LIU Shiwei. Vulnerability of social-ecosystem in agro-pastoral ecotone in western Northeast China [J]. , 2018, 35(3): 345-352.
[8]	XIONG Lin, ZHANG Pingyu, TAN Juntao, LIU Wenxin. Spatial-temporal coupling characteristics between population structure and economic development in Northeast China [J]. , 2017, 34(3): 342-350.
[9]	CHANG Le, QIAN An, YI Shuang, XU Changyi, SUN Wenke. Sea level change in China adjacent seas studied using satellite altimeter, satellite gravity, and thermohaline data [J]. , 2017, 34(3): 371-379.
[10]	SHENG Yanwen, MA Yanji. Output efficiency and economic contribution of scientific and technological resources in the three provinces of Northeast China based on panel data of 34 prefectural cities [J]. , 2016, 33(5): 632-640.
[11]	HUANG Yawen, HUA Lijuan, ZHONG Linhao, FENG Shide. Characteristics of mesoscale eddies in South China Sea [J]. , 2016, 33(1): 97-106.
[12]	MA Xiaolei, MA Yanji. Efficiency evaluation of equipment manufacturing industries in Northeast China based on DEA model [J]. , 2015, 32(5): 627-634.
[13]	LIN Xueyan, LIN Jingqiang, GUAN Le, WANG Lei. China standard cryptographic algorithm implementation in virtual desktop system [J]. , 2015, 32(5): 701-707.
[14]	CHEN Xiaoqing, YU Xiangwei. Relocation of earthquakes in North China using absolute and relative earthquake relocation methods [J]. , 2015, 32(2): 243-251,280.
[15]	XIE Zuxin, HAN Zhiwei. Investigation of interannual variations in anthropogenic emission in China based on several emission inventories [J]. , 2014, 31(3): 289-296.

Studies on Pollen Morphology of Taxaceae of China

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments