The present application relates to avocado plant cells and avocado plant varieties that have combinations of polyphenol (PPO) gene loss of function mutations resulting in avocado plant cells and avocado plants with desirable traits, such as reduced browning and longer shelf life as compared to unmodified varieties. The plants and plant cells containing PPO loss of function mutations do not have any exogenous sequences in the genome. The present application also provides methods for making such plants and plant cells.

‘BL 5-552’ is a new and distinct variety of Persea americana tree. The variety exhibits an open, upright habit. The fruit is rhomboidal, or occasionally, obovate or high spheroid shaped, lacks shoulders, is generally green skinned, is distributed throughout the canopy and commonly is larger size than that of the ‘Hass’ variety. The leaves are displayed in a similar quantity to ‘Hass’ and are similar in shape to those of the ‘Lamb/Hass’ variety. ‘BL 5-552’ has moderate resistance to Persea mites. The variety is suitable for the production of quality avocado crop under commercial growing conditions.

A new and distinct cultivar of Avocado tree named ‘SHSR-04’ is disclosed. The new variety is characterized by forming greyed-purple colored young leaves, providing ovoid shaped fruit which is rounded at the stalk end, and exhibiting high resistance to Phytophthora root rot. The new variety is particularly well suited for use as rootstock for grafting other avocado cultivars, including ‘Hass’.

A new and distinct cultivar of Avocado tree named SHSR-04 is disclosed. The new variety is characterized by forming greyed-purple colored young leaves, providing ovoid shaped fruit which is rounded at the stalk end, and exhibiting high resistance to Phytophthora root rot. The new variety is particularly well suited for use as rootstock for grafting other avocado cultivars, including Hass.

A new and distinct variety of Persea americana tree imparting high bearing capacity and vigor to the scion cultivar when used as a rootstock. Further, this rootstock exhibits a high tolerance to Phytophthora cinnamomi.

A new avocado variety, Merensky 5 has high tolerance to salinity and to Phytophthora cinnamomi when used as a rootstock. Hass trees grafted onto the Merensky 5 rootstock bear good yields.

BL 5-552 is a new and distinct variety of Persea americana tree. The variety exhibits an open, upright habit. The fruit is rhomboidal, or occasionally, obovate or high spheroid shaped, lacks shoulders, is generally green skinned, is distributed throughout the canopy and commonly is larger size than that of the Hass variety. The leaves are displayed in a similar quantity to Hass and are similar in shape to those of the Lamb Hass variety. BL 5-552 has moderate resistance to Persea mites. The variety is suitable for the production of quality avocado crop under commercial growing conditions.

A new and distinct avocado of Persea americana P. Mill. named BEN-YA'ACOV1, particularly characterized by lower tendency towards alternate bearing, Phytophthora cinnamomi and salinity resistance, and induced productivity on the grafted varieties.

A new and distinct avocado of Persea americana P. Mill. named TAMI, particularly characterized by Phytophthora cinnamomi resistance.

A new and distinct avocado of Persea americana P. Mill. named MIRIAM, particularly characterized by resistance to Phytophthora cinnamomi, drought, Alkaline soils, and salinity.