Histological aspects of microsporogenesis in fertile, cytoplasmic male sterile and restored fertile Petunia hybrida

A comparative histological study is made of microsporogenesis in fertile, cytoplasmic male sterile and restored fertile Petunia . Microsporogenesis in sterile anthers proceeds normally until leptotene. The development of the restored fertile type at 25 degree C is normal until the tetrad stage. In b...

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Bibliographic Details
Published in:Theoretical and applied genetics 1985-01, Vol.69 (4), p.423-428
Main Author: Bino, R.J
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
Biological and medical sciences
Chorology
cytoplasm
Economic plant physiology
Europe, azores, near east
fertility
Flowering, floral biology, reproduction patterns
Fundamental and applied biological sciences. Psychology
Growth and development
histology
hybridization
male sterility
Petunia hybrida
plant breeding
Plant cytology, morphology, systematics, chorology and evolution
reproduction
seeds
sporulation
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Summary:A comparative histological study is made of microsporogenesis in fertile, cytoplasmic male sterile and restored fertile Petunia . Microsporogenesis in sterile anthers proceeds normally until leptotene. The development of the restored fertile type at 25 degree C is normal until the tetrad stage. In both types sporogenesis arrests and the meiocytes, c.q. microspores ultimately degenerate. The absence of an increase in callase activity possibly explains the remnants of callose found at late stages of development. The failure of callose wall dissolution appears to be the result of metabolic abnormalities in the tapetum and is regarded as an indirect effect of sterility.
ISSN:0040-5752
1432-2242
DOI:10.1007/bf00570912