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Marker-Assisted Breeding

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Several traits (i.e., powdery mildew resistance and seedlessness) are genetically tractable and can be used in marker-assisted breeding. Currently existing markers (see table below) can be used to select individual seedlings carrying desirable traits. However, we aim to identify and validate new markers throughout the course of this project.

Examples of known markers available and relevant for application in marker-assisted breeding

Symbol	Trait/Allele	Chromosome	Origin	Selected Referecnes
SdI	seedlessness	18	V. vinifera	Doligez et al. 2002; Cabezas et al. 2006
Sex	hermaphroditism	2	V. vinifera	Dalbò et al. 2000; Lowe and Walker 2006; Riaz et al. 2006
Ufgt	berry color	16		Fischer et al. 2004
Mtc	monoterpene content	5	V. vinifera	Battilana et al. 2009; Duchene et al. 2009
Lin	Linalool content	10	V. vinifera	Battilana et al. 2009; Duchene et al. 2009
5-gt	anthocyanin 3,5-diglucosides	9	V. labrusca	Janvary et al. 2009
MybA	berry skin color	2	V. vinifera
Be size	berry size (berry weight)	18	V. vinifera	Doligez et al. 2002; Mejia et al. 2007
Ver	véraison	16		Fischer et al. 2004; Costantini et al. 2008
Pdr1	Pierce's disease	14	V. arizonica	Riaz et al. 2006, 2008
Rpv1	Downy mildew	12	V. rotundifolia	Merdinoglu et al. 2003
Rpv2	Downy mildew	18	V. rotundifolia	Bellin et al. 2009
Rpv3	Downy mildew	18		Welter et al. 2007
Rpv4	Downy mildew	4		Welter et al. 2007
Rpv5	Downy mildew	9	V. riparia	Marguerit et al. 2009
Rpv6	Downy mildew	12	V. riparia	Marguerit et al. 2009
Rpv7	Downy mildew	7		Bellin et al. 2009
Rpv8	Downy mildew	14	V. amurensis	Blasi et al. 2011
Rpv10	Downy mildew	9	V. amurensis	Schwander et al. 2011
Ren1	Powdery mildew	13	V. vinifera	Hoffman et al. 2008
Ren2	Powdery mildew	14	V. cinerea	Dalbò et al. 2001
Ren3	Powdery mildew	15	V. hybrid	Welter et al. 2007
Ren4	Powdery mildew	18	V. romanetii	Mahanil et al 2011
Run1	Powdery mildew	12	V. rotundifolia	Barker et al. 2005
Run2	Powdery mildew	18	V. rotundifolia	Riaz et al. 2011
Rdv1	Phylloxera	13	V. cinerea	Zhang et al. 2009
Xir1	Nematode: Xiphinema index	19	V. arizonica	Xu et al. 2008

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Funding for VitisGen "Accelerating grape cultivar improvement via phenotyping centers and next generation markers" is provided by a Specialty Crop Research Initiative Competitive Grant, Award No. 2011-51181-30635, of the USDA National Institute of Food and Agriculture. This site is hosted at Cornell University. Copyright © 2015.