Home > Iowa Academy of Science > Journals & Newsletters > Proceedings of the Iowa Academy of Science > Volume 32 (1925) > Annual Issue
Document Type
Research
Abstract
A pure line of Hubbard squash was used for the investigation. In the development of the anther the pollen mother cells are formed from a single longitudinal row of cells of the primary sporogenous layer in each anther lobe. During early diakinesis a perinuclear zone is formed. From the perinuclear zone as well as from the interior of the nucleus fibers are formed which constitute the multipolar spindle. There are twenty bivalent chromosomes at the heterotypic division. Counts in root tip cell showed forty somatic chromosomes. During diakinesis a callose wall is secreted around the mother cell. When the heterotypic division has been completed a special wall composed of callose is formed just inside of the original mother cell wall. Quadripartition of the mother cell is effected by partition walls which originate on the inner surface of the special wall and grow centripetally.
Publication Date
1925
Journal Title
Proceedings of the Iowa Academy of Science
Volume
32
Issue
1
First Page
265
Last Page
266
Copyright
©1925 Iowa Academy of Science, Inc.
Language
en
File Format
application/pdf
Recommended Citation
Castetter, Edward F.
(1925)
"Microsporogensis in Cucurbita maxima,"
Proceedings of the Iowa Academy of Science, 32(1), 265-266.
Available at:
https://scholarworks.uni.edu/pias/vol32/iss1/36