Apomeiotic pollen mother cell development in the apomictic Boechera species

K M Taskin, K Turgut, Roderick Scott

Research output: Contribution to journalArticle

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Abstract

Pollen mother cell (PMC) development in the apomictic Boechera species B. holboellii, B. gunnisoniana and B. divaricarpa were investigated by various cytological methods. In prophase I, in triploid species B. holboellii and B. gunnisoniana the individual chromosomes condensed into long strands within the nucleus. Then, in metaphase I, each PMC formed a restitutional nucleus thereby bypassing the rest of the first meiotic division. This is interpreted as representing apomeiosis. Subsequently, the restitution nuclei underwent a single cytokinesis as evidenced by the production of dyads. The cells within each dyad were separated by a callose wall. Most of the PMC in B. holboellii and B. gunnisoniana produced dyads, but a small proportion generated conspicuous tetrads. In contrast, diploid apomict B. divaricarpa produced only tetrads by simultaneous cytokinesis.
LanguageEnglish
Pages468-474
Number of pages7
JournalBiologia Plantarum
Volume53
Issue number3
DOIs
StatusPublished - Sep 2009

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Boechera
Boechera holboellii
cytokinesis
pollen
callose
prophase
cells
triploidy
metaphase
B-lymphocytes
diploidy
chromosomes
methodology

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Apomeiotic pollen mother cell development in the apomictic Boechera species. / Taskin, K M; Turgut, K; Scott, Roderick.

In: Biologia Plantarum, Vol. 53, No. 3, 09.2009, p. 468-474.

Research output: Contribution to journalArticle

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