A reference genetic linkage map of apomictic Hieracium species based on expressed markers derived from developing ovule transcripts.

ABSTRACT:

Background and aims

Apomixis in plants generates clonal progeny with a maternal genotype through asexual seed formation. Hieracium subgenus Pilosella (Asteraceae) contains polyploid, highly heterozygous apomictic and sexual species. Within apomictic Hieracium, dominant genetic loci independently regulate the qualitative developmental components of apomixis. In H. praealtum, LOSS OF APOMEIOSIS (LOA) enables formation of embryo sacs without meiosis and LOSS OF PARTHENOGENESIS (LOP) enables fertilization-independent seed formation. A locus required for fertilization-independent endosperm formation (AutE) has been identified in H. piloselloides. Additional quantitative loci appear to influence the penetrance of the qualitative loci, although the controlling genes remain unknown. This s

SUBMITTER: Shirasawa K 

PROVIDER: S-EPMC4343286 | biostudies-literature | 2015 Mar

REPOSITORIES: biostudies-literature