Open AccessIdentification and mapping of a new recessive dwarfing gene dw9 on the 6RL rye chromosome and its phenotypic effects
Author(s) -
Agnieszka Grądzielewska,
Paweł Milczarski,
Katarzyna Molik,
Edyta Pawłowska
Publication year - 2020
Publication title -
plos one
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.99
H-Index - 332
ISSN - 1932-6203
DOI - 10.1371/journal.pone.0229564
Subject(s) - dwarfing , dwarfism , biology , genetics , gene , phenotype , chromosome , genetic analysis , quantitative trait locus
The introduction of high-yielding semi-dwarf varieties of wheat into cultivation has led to a "green revolution." This has required intensive research into various sources of dwarfism in wheat. However, there has been very little advancement in research on dwarfing genes in rye in comparison to wheat or barley. So far, three dominant dwarfing genes ( Ddw 1, Ddw 3, and Ddw 4) and three recessive genes ( ct 1, ct 2, and np ) have been characterized and precisely mapped in rye. There is no complete catalog of dwarfing genes available in rye. This paper presents an identification of the source of dwarfism and preliminary characterization of the new recessive gene dw 9 from the BK-1 line. The gene was mapped on the long arm of the 6R chromosome and belongs to the GA-insensitive group. The initial characterization of the influence of this gene on morphological traits shows that it significantly affects the decrease of yielding trait parameters. A full evaluation can be performed after detailed breeding studies.