Inheritance of garden rose architecture and its association with flowering behaviour

Publication Overview
TitleInheritance of garden rose architecture and its association with flowering behaviour
AuthorsKawamura K, Oyant LH, Thouroude T, Jeauffre J, and Foucher F.
TypeJournal Article
Journal NameTree Genetics & Genomes
Volume11
Year2015
CitationKawamura K, Oyant LH, Thouroude T, Jeauffre J, and Foucher F. Inheritance of garden rose architecture and its association with flowering behaviour. Tree Genetics & Genomes 2015, 11:22

Abstract

Understanding the genetic basis of plant architecture is limited for woody plants due to the challenges of assessing the inheritance of their complex architecture. We aimed to evaluate the genetic variability of plant form and stature in a garden rose population, analyse the inheritance of plant architecture and its linkage with flowering behaviour and identify the quantitative trait loci (QTLs) controlling garden rose architecture. A total of 98 F1 hybrids were derived from the cross between two diploid roses, The Fairy (TF) and Rosa × wichurana (RW) that differed in stature and flowering behaviour. The TF exhibits continuous flowering (CF) and has erect stature. The RW is once flowering (OF) and prostrate in stature. Three clones per genotype were multiplied, and a total of 300 plants were cultivated in a field. Flowering behaviour, plant form, plant height, stem diameter and internode length were scored during each of 2 years. All architectural traits had significant genetic variances (29–61 % of their respective phenotypic variances), and their broad-sense heritability estimates were 0.76–0.92. The majority of CF progeny was erect, whereas the OF progeny was prostrate, suggesting a linkage between plant form and flowering behaviour. The QTL analysis identified eight major QTLs controlling architectural traits. Several candidate genes involved in gibberellin biosynthesis and auxin signalling were identified in the vicinity of the QTLs. High heritability estimates obtained for garden rose architecture indicated that architectural characteristics are feasible targets of rose breeding. Linkage of plant form and flowering behaviour, however, prevents independent selection of these traits. The candidate genes identified can be good targets for future physiological studies.
Projects
This publication contains information about 1 projects:
Project NameDescription
rose-architecture-Kawamura-2014
Features
This publication contains information about 16 features:
Feature NameUniquenameType
shoot habitqSHHBT.FW-ch3QTL
shoot habitqSHHBT.FW-ch2QTL
shoot habitqSHHBT.FW-ch5QTL
shoot habitqSHHBT.FW-ch6QTL
shoot habitqSHHBT.FW-ch4QTL
shoot habitqSHHBT.FW-ch7QTL
plant heightqPLHT.FW-ch6QTL
plant heightqPLHT.FW-ch2QTL
plant heightqPLHT.FW-ch7QTL
plant heightqPLHT.FW-ch5QTL
plant heightqPLHT.FW-ch4QTL
stem angleqSTANG.FW-ch3QTL
stem angleqSTANG.FW-ch5QTL
stem diameterqSTDIA.FW-ch6QTL
stem diameterqSTDIA.FW-ch2QTL
internode lengthqINL.FW-ch6QTL
Featuremaps
This publication contains information about 1 maps:
Map Name
Rose-FW-F1