Apple tree rootstock named 'G.935'

Abstract

A new and distinct variety of apple tree rootstock Malus domestica×Malus robusta hybrid ‘G.935’ is described herein. The new variety is a dwarfing rootstock that is resistant to fire blight (Erwinia amylovora) and crown rot (Phytophthora cactorum). The ‘G.935’ rootstock is useful in that it can be propagated clonally and used as a rootstock or root system for apple trees as well as for interstems of apple trees.

Description

[0001]Genus and species: Malus domestica×Malus robusta hybrid.[0002]Variety denomination: ‘G.935’.BACKGROUND AND SUMMARY OF THE INVENTION[0003]The invention described here is a new variety of apple tree rootstock, Malus domestica×Malus robusta hybrid, hereinafter referred to as ‘G.935’. ‘G.935’ originated from a planned cross in 1976 in Geneva, N.Y. The new variety is a dwarfing rootstock that is resistant to fire blight and crown rot. It is precocious and highly productive, and can be used as a rootstock and for interstems of apple trees.[0004]In the spring of 1976, pollen from a Malus robusta ‘Robusta 5’ apple tree was applied to emasculated flowers of a Malus domestica ‘Ottawa 3’ apple tree at the New York State Agricultural Experiment Station (“NYSAES”), Cornell University, Geneva, N.Y. In the fall of 1976, approximately 500 seeds resulting from this pollination were extracted from mature fruit derived from this cross. In the winter of 1976-77, the seeds were stratified and plan...

AI Technical Summary

Benefits of technology

G.935 demonstrates significant resistance to fire blight and crown rot, is highly productive, and is compatible with various scion cultivars, outperforming other rootstocks in yield efficiency and disease resistance, making it an effective solution for apple tree cultivation.

Problems solved by technology

However, ‘Ottawa 3’ is susceptible to the woolly apple aphid (Eriosoma lanigerum) and to fire blight (Erwinia amylovora).

‘Robusta 5’ does not induce precocity to the scion and is not highly yield efficient.

Images