Grapevine plant named ‘Camminare Noir’

Abstract

A new and distinct variety of grapevine plant named ‘Camminare Noir’, particularly selected for its high resistance to Pierce's disease, as well as quality of fruit and wines produced is disclosed.

Description

[0001]Latin name:[0002]Botanical classification: Vitis vinifera L.[0003]Varietal denomination: The varietal denomination of the claimed variety of grapevine plant is ‘Camminare Noir’.BACKGROUND OF THE INVENTION[0004]Pierce's disease (PD) is common across the southern United States from Virginia to northern California. It is also common across Mexico and Central America. The disease is caused by the bacterium Xylella fastidiosa, which is hosted by a very wide range of native and ornamental plants. The bacterium is spread by xylem feeding insects as vectors, primarily sharpshooters. PD is one of the few diseases that rapidly kills wine, table, and raisin grape cultivars of the cultivated grape, Vitis vinifera. Vector populations can be limited with insecticides, but these are difficult to use near their typically riparian native habitat or in the ornamental landscapes in which they flourish. Breeding for PD resistance has been active for over 70 years, but progress has been very slow ...

AI Technical Summary

Benefits of technology

[0008]The development of this new grapevine variety is in part a result of the discovery of a single dominant gene for resistance to Xylella fastidiosa, the bacterial causal agent of Pierce's disease (PD). The source of the PD resistance is a form of V. arizonica (‘b43-17’) that appears to have some V. candicans parentage and is from Monterrey, Mexico. ‘b43-17’ was crossed to the susceptible V. rupestris ‘A. de Serres’ to create the F8909 population. Neither ‘b43-17’ nor ‘A. de Serres’ are patented. The resistance from ‘b43-17’ was found to be inherited as a single dominant gene (locus), and this resistance gene, PdRl, was genetically mapped using the F8909 population by a grapevine breeding program. Tightly linked simple sequence repeat (SSR) markers were developed and were used in marker-assisted selection to exclude susceptible plants from evaluation in each round of selection. All the progeny with PdRl were tested for PD resistance and only those with strong resistance were considered for use as parents. Potential parents were also screened for fruit quality over generations and only those with good quality fruit and that appeared like Ii. vinifera were selected.

[0009]Line ‘F8909-08’ from the F8909 population was crossed to ‘P79-101’, a highly susceptible, advanced V. vinifera table grape selection a grape breeding program. The resulting ‘F8909-08’ X ‘P79-101’ F1 generatio

Problems solved by technology

Other PD resistant cultivars are known, but their fruit and winemaking quality

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