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[Studies on the Significance of Vegetative Nuclei and Their Nucleoli in Pollen Grains and Pollen Tubes]

Overview
Journal Theor Appl Genet
Publisher Springer
Specialty Genetics
Date 2014 Jan 18
PMID 24435284
Citations 2
Authors
R Herich
Affiliations
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Abstract

The communication deals with a study of the significance of vegetative nuclei of pollen grains. The study of vegetative nuclei was performed with pollen grains and pollen tubes of a tulip (Tulipa gesneriana, var. Bellona).The conclusions are summarized as follows: 1. The vegetative nucleus does not participate directly in the regulation of growth of the pollen tubes. 2. Stimulation of the growth of pollen tubes induced by means of boric acid is not accompanied by a simultaneous stimulation of spiralization of chromosomes in the generative nucleus or by its division. 3. The vegetative nucleus and its nucleolus take part in the division of the generative nucleus. 4. In the course of spiralization of the chromosomes of the generative nucleus, the nucleolus disappears from the vegetative nucleus. The vegetative nucleus, however, persists in spite of a decrease in DNA content. 5. The vegetative nucleus disappears after formation of spermatic nuclei.

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[The development of pollen grains and formation of pollen tubes in higher plants : I. Quantitative measurements of the DNA-content of generative and vegetative nuclei in the pollen grain and pollen tube of Petunia hybrida mutants].

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