Evaluation of Domestication Loci Associated with Awnlessness in Cultivated Rice, Oryza sativa.

ABSTRACT: BACKGROUND:Awns are bristle-like organs at the tips of the glumes. Wild rice has maintained long awns for successful seed propagation through seed dispersal. Seed awning is an interesting trait in rice domestication. Long awns might have been beneficial for seed gatherers in the initial phase of domestication; however, awnless phenotypes were preferably selected in a later phase with non-seed-shattering plants. Investigation of domestication loci associated with awnlessness in cultivated rice will be useful in clarifying the process and history of rice domestication. RESULTS:Quantitative trait locus (QTL) analysis for seed awning was carried out using a BC3F2 population between Oryza sativa IR36 (a cultivated donor parent with awnless phenotype) and O. rufipogon W630 (a wild recurrent pare

SUBMITTER: Amarasinghe YPJ 

PROVIDER: S-EPMC7188743 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature