Seedless fruit in Annona squamosa L. is monogenic and conferred by INO locus deletion in multiple accessions.

ABSTRACT:

Key message

Inheritance of the presence/absence of seeds in Annona squamosa is mediated by a single fully recessive gene and is caused by a deletion of the INNER NO OUTER (INO) locus. For some fruits, seedless varieties are desirable for consumption and processing. In the sugar apple tree (Annona squamosa L.), the seedless trait in the Thai seedless (Ts) and Brazilian seedless (Bs) accessions was associated with defective ovules and an apparent deletion of the INNER NO OUTER (INO) ovule development gene locus. Segregation analysis of F₂ and backcross descendants of crosses of Bs to fertile wild-type varieties in this species with a multi-year generation time showed that seedlessness was recessive and controlled by a single locus. Comparison of whole genome sequence of a

SUBMITTER: Rodrigues BRA 

PROVIDER: S-EPMC11180160 | biostudies-literature | 2024 Jun

REPOSITORIES: biostudies-literature