Articles
BREEDING RUELLIA SPP. AT THE UNIVERSITY OF FLORIDA
Article number
1000_58
Pages
423 – 428
Language
English
Abstract
A breeding program was initiated at the University of Florida in Gainesville in 2007 with the aim of developing sterile cultivars of Ruellia in different flower colors and growth habits.
Breeding methods used include hybridizations, polyploidization, and induction of mutations.
Fifteen breeding lines of Ruellia were selected in 2011 after greenhouse trials and a preliminary early spring field trial was performed at Wimauma, FL. These lines were propagated vegetatively and transplanted in the field using a randomized complete block design with three replications and three plants per replicate at Northwestern Florida (Quincy), North central Florida (Citra), and Southeastern Florida (Fort Pierce). Plants were evaluated monthly for a period of 24 weeks for landscape value, flowering and fruiting.
Three breeding lines have been selected for cultivar release: purple R10-102, semi-dwarf pink R10-105 and white R10-108. These lines have significantly better landscape performance and flowering than the existing commercial cultivars, and less or no invasive potential from seed production.
These will be released and commercialized in early 2013. Additionally, other Ruellia breeding lines and low-maintenance foliage and flowering lines developed at the breeding program are currently in commercial trials.
Breeding methods used include hybridizations, polyploidization, and induction of mutations.
Fifteen breeding lines of Ruellia were selected in 2011 after greenhouse trials and a preliminary early spring field trial was performed at Wimauma, FL. These lines were propagated vegetatively and transplanted in the field using a randomized complete block design with three replications and three plants per replicate at Northwestern Florida (Quincy), North central Florida (Citra), and Southeastern Florida (Fort Pierce). Plants were evaluated monthly for a period of 24 weeks for landscape value, flowering and fruiting.
Three breeding lines have been selected for cultivar release: purple R10-102, semi-dwarf pink R10-105 and white R10-108. These lines have significantly better landscape performance and flowering than the existing commercial cultivars, and less or no invasive potential from seed production.
These will be released and commercialized in early 2013. Additionally, other Ruellia breeding lines and low-maintenance foliage and flowering lines developed at the breeding program are currently in commercial trials.
Authors
R. Freyre, A. Moseley , C. Reinhardt-Adams, A.G.W. Knox, S.B. Wilson, Z. Deng
Keywords
hybridization, mutagenesis, oryzalin, polyploidization
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