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

Citation
F. Pupilli et al., The chromosome segment related to apomixis in Paspalum simplex is homoeologous to the telomeric region of the long arm of rice chromosome 12, MOL BREED, 8(1), 2001, pp. 53-61
Citations number
50
Categorie Soggetti
Plant Sciences","Animal & Plant Sciences
Journal title
MOLECULAR BREEDING
ISSN journal
13803743 → ACNP
Volume
8
Issue
1
Year of publication
2001
Pages
53 - 61
Database
ISI
SICI code
1380-3743(200108)8:1<53:TCSRTA>2.0.ZU;2-1
Abstract
Apomixis is a form of asexual reproduction that in plants leads to the prod uction of seed progeny that are exact copies of the mother individual. A ma pping population generated by backcrossing a sexual with an apomictic genot ype of Paspalum simplex, both at the tetraploid level, was used to find mar kers 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 a rm of rice chromosome 12, showed tight linkage with apomixis. Genetic and m olecular data strongly indicate that the potentiality to express apomixis i n P. simplex is given by a relatively large chromosome segment that is inhe rited as a single genetic unit.