ONLINE IMAGE COLLECTION

Click on Image for JPG rendition
Image Title: Developing pollen grains at the microspore stage
Image Credit: Carlos A. Pèrez-Munoz, University of California
AJB Editor: Nels R. Lersten, Iowa State University
Intended End User: Teacher, Student
License Details: BSA - Terms for Image Use
Copyright held by: Carlos A. Pèrez-Munoz, BSA
For Larger Version (click here)

About the Image

Transverse section, one locule of vigna vexillata (Fabaceae) anther. The three developing pollen grains are at the microspore stage; each has ektexine ridges overlying a thick inner exine wall (endexine). An additional plug of wall material (Zwischenkörper) is visible at top of right microspore. Microspore nucleus has migrated to the cell periphery prior to mitosis.

Link to the AJB Abstract for the article:

Pollen wall development in Vigna vexillata I. Characterization of wall layers

National Science Foundation  Development Supported by the National Science Foundation