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Citrus rootstock are plants used as rootstock for citrus plants. A rootstock plant must be compatible for scion grafting, ... The original crosses, made in the early ...
The pompia, a Sardinian citrus genetically synonymous with the Rhobs el Arsa Detailed genomic analysis showed Rhobs al Arsa to be highly similar to several cultivars of the Citrus limetta , the limetta or Persian sweet lime , and likely shared a common origin with them, arising from a cross between citron ( Citrus medica ) and sour orange ...
Initially, many citrus types were identified and named by individual taxonomists, resulting in a large number of identified species: 870 by a 1969 count. [18] Some order was brought to citrus taxonomy by two unified classification schemes, those of Chōzaburō Tanaka and Walter Tennyson Swingle, that can be viewed as extreme alternative visions of the genus.
The purpose of this cross was to attempt to create a cold hardy citrus tree (which is the nature of a trifoliate), with delicious fruit like those of the sweet orange. However, citranges are generally bitter. Citrange is used as a rootstock for citrus in Morocco, but does not prevent dry root rot or exocortis disease. [2]
Like the rangpur, it is a cross between mandarin orange and citron. Rough lemon is a cold-hardy citrus and can grow into a large tree. The rough lemon is mostly rind, making it less edible than other citrus. As a result, the rough lemon is mainly used for citrus rootstock, [1] however areas of South
The rootstock is very susceptible to fire blight and can develop burr knots. [3] M.25: Very vigorous — Suitable for a grassed orchard, and to grow on as a full standard. Plant 20 ft (6.1 m) apart, makes a tree of 15 to 20 ft (4.6 to 6.1 m) or more height and spread, eventually yielding 200 to 400 lb (91 to 181 kg) per tree.
It is resistant to citrus tristeza virus and exocortis but is sensitive to root asphyxia and Phytophthora. [2] [4] One of the down sides to using the rootstock is it grows slow in the early years. In the right conditions it can induce high productivity and excellent fruit quality, although these are usually somewhat smaller than with others.
Citrumelo is widely employed as a citrus rootstock, [1] being resistant to the severe citrus tristeza virus and to phytophthora root rot as well as to blight, cold, and citrus nematode. [2] The trees can survive temperatures into the teens ( Fahrenheit ); [ 3 ] one specimen in North Carolina reportedly survived temperatures below zero Fahrenheit.