Ultrastructural characteristics of pollen development in <i>Vitis vinifera</i> L. (cv. Sangiovese)

Authors

  • M. Cresti
  • F. Ciampoloni

DOI:

https://doi.org/10.5073/vitis.1999.38.141-144

Keywords:

Vitis vinifera, Sangiovese, pollen grain, microsporogenesis

Abstract

Ultrastructural studies on the development of microspores to ripe pollen (cv. Sangiovese) showed that the diploid microsporocyte undergoes meiosis in order to form a tetrad of microspores sticked together by a callose wall. After callose digestion, 4 independent microspores were released. With successive growth, the single nucleus of each microspore undergoes an asymmetrical division forming the bicellular pollen grain (vegetative cells containing the generative cells). Only after pollination and pollen tube growth the two sperms will be formed. The mature pollen of Sangiovese is tricolpate; the exine is scabrate-verrucate in the equatorial zone and foveolate in the polar region.

Downloads

Published

2015-07-30

Issue

Vol. 38 No. 4 (1999): Vitis

Section

Article

License

The content of VITIS is published under a Creative Commons Attribution 4.0 license. Any user is free to share and adapt (remix, transform, build upon) the content as long as the original publication is attributed (authors, title, year, journal, issue, pages) and any changes to the original are clearly labeled. We do not prohibit or charge a fee for reuse of published content. The use of general descriptive names, trade names, trademarks, and so forth in any publication herein, even if not specifically indicated, does not imply that these names are not protected by the relevant laws and regulations. The submitting author agrees to these terms on behalf of all co-authors when submitting a manuscript. Please be aware that this license cannot be revoked. All authors retain the copyright on their work and are able to enter into separate, additional contractual arrangements.