Volume 84, Issue 7 p. 1451-1461
RESEARCH ARTICLE

Pollen micromorphology of eastern Chinese Polygonatum and its role in taxonomy by using scanning electron microscopy

Maroof Ali

Maroof Ali

College of Life Science, Anhui Normal University, Wuhu, China

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Yu-Jun Liu

Yu-Jun Liu

Anhui Academy of Science and Technology, Hefei, China

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Qi-Ping Xia

Qi-Ping Xia

College of Life Science, Anhui Normal University, Wuhu, China

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Saraj Bahadur

Corresponding Author

Saraj Bahadur

College of Forestry, Hainan University, Haikou, China

Correspondence

Saraj Bahadur, College of Forestry, Hainan University, Haikou, China.

Email: [email protected]

Jian-Wen Shao, College of Life Science, Anhui Normal University, Wuhu 241000, China.

Email: [email protected]

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Abrar Hussain

Abrar Hussain

Centre of Physics, The University of Science and Technology of China, Hefei, China

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Jian-Wen Shao

Corresponding Author

Jian-Wen Shao

College of Life Science, Anhui Normal University, Wuhu, China

Correspondence

Saraj Bahadur, College of Forestry, Hainan University, Haikou, China.

Email: [email protected]

Jian-Wen Shao, College of Life Science, Anhui Normal University, Wuhu 241000, China.

Email: [email protected]

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Muhammad Shuaib

Muhammad Shuaib

School of Ecology and Environmental Science, Yunnan University, Kunming, China

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First published: 13 February 2021
Citations: 16

Maroof Ali and Yu-Jun Liu authors contributed equally to this work.

Review Editor: Paul Verkade

Funding information: China's National Basic Science and Technology Program, Grant/Award Number: 2019FY101810

Abstract

Although considerable progress has recently been made in the taxonomic study of Asparagaceae, but the Polygonatum remains one of the most poorly investigated genus. Therefore, the present study was designed with the aim, to document the pollen micromorphology of closely related Polygonatum taxa and its taxonomic significance. Pollen micro-morphological features were observed using scanning electron microscopy—SEM). The pollen grains are monad, navicular, monocolpate, and radially symmetrical. A significant variation was observed in the exine sculpturing. Moreover, most of the Polygonatum taxa have perforate pollen while some of them were mixed with psilate to perforate, perforate to microreticulate, sometimes scabrate, gemmate with baculate. Hence, this study documented the pollen morphology of Polygonatum taxa and strengthens the taxonomic identification of the genus Polygonatum based on pollen characters, which helps and can be used as an additional tool for the correct identification and discrimination of the species of Polygonatum at generic and species level.

CONFLICT OF INTEREST

The authors declare no potential conflict of interest.

DATA AVAILABILITY STATEMENT

Data available on request due to privacy/ethical restrictions.