🍇 Richter 110

Richter 110 (also written 110 R or 110 Richter) is a grapevine rootstock, not a fruit variety: an interspecific cross of Vitis berlandieri and Vitis rupestris made in France in 1902 by Franz Richter. The VIVC passport (variety number 10065) gives the breeder's pedigree as Berlandieri Resseguier No. 2 × Rupestris Martin, while the pedigree confirmed by markers is Berlandieri Boutin B × Rupestris du Lot; the parents it lists are Berlandieri Gaillard and Rupestris du Lot. The flowers are male, the chlorotype is 6, and VIVC holds resistance data and six photographs; the rootstock is registered in the European Catalogue of vine varieties.

VIVC lists eight synonyms, among them 110 R, 110 Richter, 110 Berlandieri × Rupestris and BxR 110.

A 2012 review for the Australian Grape and Wine Research and Development Corporation (now Wine Australia), Rootstock breeding and associated R&D in the viticulture and wine industry by John Whiting, places 110 Richter among the rootstocks regarded as more consistently conferring drought tolerance, together with Ramsey, 140 Ruggeri and 1103 Paulsen. In its table of reactions to grape phylloxera biotypes, 110 Richter is resistant to biotypes G19 and G20 and tolerant to G1 and G4 in both the excised-root and the potted-vine assay, with mixed results for G7 and G30. The review also gives the share of 110 Richter in the rootstock cuttings recorded in Australia: 6.6% in 2007–2011, against less than 1% in 1989–1993.