title: Towards an understanding of the control of 'crumbly' fruit in red raspberry.
abstract: The genetic disorder known as 'crumbly' fruit is becoming a serious problem in the European raspberry industry. The study set out to examine the crumbly phenotype in a red raspberry mapping population under two environments (field and polytunnel) across six seasons in an effort to understand variability of the syndrome and to examine whether genetic factors were important and if so, whether QTL associated with the phenotype could be identified. This highlighted that seasonal, environmental (field or polytunnel) and genetic factors all influence the condition. Two QTL that are important for the genetic control of the condition have been located on linkage groups one and three, and an association with ripening time has been identified.
authors.affiliation: James Hutton Institute, Dundee, Scotland DD2 5DA UK.
authors.forename: J
authors.initials: J
authors.lastname: Graham
authors.affiliation: James Hutton Institute, Dundee, Scotland DD2 5DA UK.
authors.forename: K
authors.initials: K
authors.lastname: Smith
authors.affiliation: James Hutton Institute, Dundee, Scotland DD2 5DA UK.
authors.forename: S
authors.initials: S
authors.lastname: McCallum
authors.affiliation: James Hutton Institute, Dundee, Scotland DD2 5DA UK.
authors.forename: P E
authors.initials: PE
authors.lastname: Hedley
authors.affiliation: James Hutton Institute, Dundee, Scotland DD2 5DA UK.
authors.forename: D W
authors.initials: DW
authors.lastname: Cullen
authors.affiliation: James Hutton Institute, Dundee, Scotland DD2 5DA UK.
authors.forename: A
authors.initials: A
authors.lastname: Dolan
authors.affiliation: James Hutton Institute, Dundee, Scotland DD2 5DA UK.
authors.forename: L
authors.initials: L
authors.lastname: Milne
authors.affiliation: Biomathematics and Statistics Scotland, Dundee, Scotland DD2 5DA UK.
authors.forename: J W
authors.initials: JW
authors.lastname: McNicol
authors.affiliation: Biomathematics and Statistics Scotland, Dundee, Scotland DD2 5DA UK.
authors.forename: C A
authors.initials: CA
authors.lastname: Hackett
keywords: Crumbly fruit; QTL mapping; Raspberry