The chromosome segment related to apomixis in Paspalum simplex is homoeologous to the telomeric region of the long arm of rice chromosome 12

Apomixis is a form of asexual reproduction that in plants leads to the production of seed progeny that are exact copies of the mother individual. A mapping population generated by backcrossing a sexual with an apomictic genotype of Paspalum simplex, both at the tetraploid level, was used to find mar...

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Bibliographic Details
Published in:Molecular breeding 2001-08, Vol.8 (1), p.53-61
Main Authors: Pupilli, Fulvio, Labombarda, Paola, Caceres, Maria E, Quarín, Camilo L, Arcioni, Sergio
Format: Article
Language:English
Subjects:
Apomixis
Asexual reproduction
Chromosome 12
Chromosomes
Gene mapping
Genetic analysis
Genotypes
Mapping
Markers
Molecular biology
Oryza
Oryza sativa
Paspalum
Paspalum simplex
Plant biology
Progeny
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Summary:Apomixis is a form of asexual reproduction that in plants leads to the production of seed progeny that are exact copies of the mother individual. A mapping population generated by backcrossing a sexual with an apomictic genotype of Paspalum simplex, both at the tetraploid level, was used to find markers co-segregating with apomixis. Genetic analysis showed that apomixis is under the control of a single dominant allele assuming a random chromatid assortment. Five rice markers, mapped in the telomeric region of the long arm of rice chromosome 12, showed tight linkage with apomixis. Genetic and molecular data strongly indicate that the potentiality to express apomixis in P. simplex is given by a relatively large chromosome segment that is inherited as a single genetic unit.
ISSN:1380-3743
1572-9788
DOI:10.1023/A:1011966922301