NDLI: Pollen heteromorphism is pervasive in Thalictrum (Ranunculaceae)

Content Provider	Springer Nature Link
Author	Humphrey, Rebecca P.
Copyright Year	2016
Abstract	Among the angiosperms, features of pollen morphology such as grain size, aperture number and surface ornamentation display striking variation. It is less well appreciated that pollen morphology may vary within and among populations of the same species as well as within individual plants. In some species, individual plants produce multiple types of fertile pollen grains (called pollen heteromorphism). Aspects of pollen morphology, such as aperture number, are likely to affect fertilization success with different morphologies favored in different local competitive and ecological environments. This study surveys variation in pollen grain morphology among species throughout the genus Thalictrum. Pollen from individuals of 36 species was rehydrated from herbarium specimens, and light microscopy was used to quantify pollen grain aperture number and size. I find that pollen aperture-number heteromorphism is present within all Thalictrum species studied, and distributions of aperture-number morphs vary both within and among species. This study provides an example of significant pollen heteromorphism within a genus that also varies widely for pollination mode and sexual system.
Starting Page	1171
Ending Page	1177
Page Count	7
File Format	PDF
ISSN	03782697
Journal	Plant Systematics and Evolution
Volume Number	302
Issue Number	8
e-ISSN	21996881
Language	English
Publisher	Springer Vienna
Publisher Date	2016-05-06
Publisher Place	Vienna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Pollen grain aperture Pollen grain size Pollen heteromorphism Thalictrum Plant Sciences Plant Ecology Plant Anatomy/Development Plant Systematics/Taxonomy/Biogeography
Content Type	Text
Resource Type	Article
Subject	Plant Science Ecology, Evolution, Behavior and Systematics

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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