APPLE ROOTSTOCKS
G.11
SIZE CLASS 3-5
GENEVA 11 (G.11, CG.11)
Stoolbed
Branch
Leaf
Orchard Tree
Pedigree
1978 cross of M.26 and Robusta 5 Crabapple
Precocity
As good or better than M.26
Productivity
Quite exceptional - higher yield efficiency than many commercial rootstocks, including M.9 in trials.
Scion Fruit Size
Very large
Anchorage
Requires support in early years
Fire blight
Moderately resistant, G.11 rootstock infection is rare
Crown & Root Rots
Screened as seedling, currently testing
Woolly Apple Aphid Susceptibility
Moderate, needs testing
Powdery Mildew Resistance
None
Hardiness (Midwinter Chilling)
Currently testing
Suckering
Light
Burrknots
Uncommon
Stoolbed Performance
Moderate to good, liners are typically unbranched, rooting is only adequate
Virus sensitivities
None noted
Experience
Very limited, no major commercial sales in US until 2002 at earliest
Sources
Strains
Observations, suspicions, history
Misidentifications have hampered the US release of this very promising genotype. The best managed orchard trial of G.11 has resulted in extremely productive trees that are smaller than the Pajam 2 strain of M.9. The actual size class for this rootstock has yet to be finally determined.
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Apple Rootstocks Page
Page maintained by wcj4@cornell.edu.
Last modified September 28, 1999.
http://www.nysaes.cornell.edu/hort/breeders/appleroots/Factsheets/G11.html