Cytogenetics of F1 hybrids between Cajanus and Atylosia species and its phylogenetic implications

R P Pundir; R B Singh

doi:10.1007/BF00252058

Cytogenetics of F1 hybrids between Cajanus and Atylosia species and its phylogenetic implications

Theor Appl Genet. 1985 Dec;71(2):216-20. doi: 10.1007/BF00252058.

Authors

R P Pundir¹, R B Singh

Affiliation

¹ Department of Genetics and Plant Breeding, Banaras Hindu University, 221 005, Varanasi, India.

PMID: 24247385
DOI: 10.1007/BF00252058

Abstract

Cytogenetic relationships between two cultivars of Cajanus cajan and six species of Atylosia were investigated. Of the 12 cross combinations obtained, only seven could be studied. Meiotic chromosome pairing, pollen and ovule fertility in parental species and four F1 hybrids were near normal. Some meiotic abnormalities were observed in the Fls: A. lineata x A. scarabaeoides, A. scarabaeoides x A. sericea and C. cajan (UPAS 120) x A. trinervia, indicating varying degrees of chromosomal and genic differences between these species. These observations suggested that A. cajanifolia is the closest wild relative of C. cajan, followed by A. scarabaeoides, A. albicans and A. trinervia. Among the Atylosia species, A. sericea was closer to A. scarabaeoides than to A. lineata.