Variety traits

Avocado Tolerance

Persea americana Mill.

The ability of avocado rootstocks to withstand biotic and abiotic stresses, which determines the survival and productivity of grafted trees under unfavorable conditions.

In the reference 4 varieties crop Avocado, where this is mentioned in the description.

When assessing tolerance to Phytophthora root rot, caused by Phytophthora cinnamomi, the Area Under the Disease Progress Curve (AUDPC) index is used. Low values of this coefficient indicate higher genotype tolerance, which allows for the selection of resistant rootstocks.

Regarding salinity, avocado tolerance is determined by the rootstock's ability to limit the accumulation of toxic chloride ions (Cl⁻) in leaf tissues. Cultivars with high tolerance demonstrate lower chloride concentrations in the leaf blade, which correlates directly with the maintenance of trunk growth and productivity.

Under water stress, tolerance is evaluated through physiological parameters, including leaf water potential, transpiration rate, and stomatal conductance. Tolerant rootstocks are characterized by their ability to maintain metabolic process stability and recover functions more rapidly upon the resumption of irrigation.

General information about the subject — on the page Tolerance.

Sources8

Varieties of Avocado mentioned in the description

Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.