Phenotypic characterization and genetic analysis of a partially female-sterile mutant in Brassica napus
| Autor: | Xin-Jun Chen, Chun-Hong Li, Cun-Kou Qi, San-Xiong Fu |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Gynoecium
Plant Infertility Mutant Stamen Genes Recessive Plant Science Flowers Pollen Tube Biology medicine.disease_cause Genes Plant Anthesis Pollen Botany Genetics medicine Brassica napus food and beverages General Medicine Phenotype Vacuolization Germination Mutation Seeds Pollen tube Agronomy and Crop Science |
| Zdroj: | Plant science : an international journal of experimental plant biology. |
| ISSN: | 1873-2259 |
| Popis: | mfs is a partially female-sterile Brassica napus mutant derived from a spontaneous mutation. When the mutant is crossed as a female, very poor seed set is obtained, whereas it is fertile as a pollen donor. The floret of the mutant consisted of almost equal-length stamens, a short pistil, a flat style and ovary, and the stigma was chapped. Measures of pollen viability and pollen tube growth in vitro indicated that the mutation enhanced pollen viability. The papillae of mfs consisted of two conjoint bilobed domes, and the papillar cells were sparse, oblate and large at anthesis, but become withered and senesced quickly afterward. Pollen grains could germinate over the papillar cells, but pollen tubes could not penetrate into it. After flower opening, the number of organelles in mfs papillar cell decreased, the structure of it distinctly degenerated, and vacuolization was abnormally high. Genetic analysis of 3 F2 populations and 3 BC1F1 populations suggested that the mutant trait was controlled by two recessive genes. |
| Databáze: | OpenAIRE |
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