Aspects influencing the rootstock - scion performance during long term evaluation in pear orchard

Abstract

During 1999–2016, the performance of ‘Red Bartlett’, ‘Conference’ and ‘Beurré Alexander Lucas’ grafted on four pear (Pyrus) rootstocks OH × F 69, OH × F 87, OH × F 230, OH × F 333 and on quince (Cydonia) rootstock BA 29 was evaluated at the RBIP Holovousy Ltd. For each combination, trunk cross-section area, cumulative yield, yield efficiency and mean fruit weight were assessed. The growth vigour of the scion cultivars on OH × F rootstocks was similar or slightly higher comparing to the growth on BA 29. Throughout the years, the growth vigor and productivity of the rootstock combinations may change. Less vigorous combinations of rootstock/scion were linked with higher yields in young trees, but usually with just moderate yields in later seasons. By contrast, combinations with higher growth vigour had usually higher yields in the later seasons. This balance is genotype specific, where aside of rootstock an important role is played by the scion cultivar vigour. The bearing precocity may be influenced by the cultivar as well. The results can vary with different climatic conditions and orchard management.

Effect of Certain Rootstocks on Vegetative, Reproductive Growth and Yield of Cashew Cultivars

“…The results clearly indicate that the cultivar plays an important role in the precocity of particular scion/rootstock combinations. This conclusion is consistent with the findings of Meszaros et al [27] in pears.…”

Deficit Irrigation as a Tool to Optimize Fruit Quality in Abbé Fetél Pear

“…In vigorous rootstocks, most of the water and carbohydrates resources are partitioned to vegetative growth due to the higher sink strength of the growing shoots. Therefore, rootstock genotype and its interactions with the scion [23] should also be considered when applying reduced irrigation strategies [24], since tree water relations are widely affected by rootstock vigor [25]. In particular, dwarfing rootstocks usually show lower hydraulic conductivity and reduced root development with consequent lower stem water potentials [25,26].…”

“…Therefore, rootstock genotype and its interactions with the scion [23] should also be considered when applying reduced irrigation strategies [24], since tree water relations are widely affected by rootstock vigor [25]. In particular, dwarfing rootstocks usually show lower hydraulic conductivity and reduced root development with consequent lower stem water potentials [25,26]. These effects are known to affect source/sink relationships, carbon partitioning and thus fruit growth and quality [27].…”

Survival Rate of Young Pear Trees in Different Rootstock and Cultivar Combinations under Field Conditions: Preliminary Results

“…The performance of the rootstock used in production may vary. However, little is known about the reasons why the performance of the rootstock to be used in production changes over time (Meszaros et al, 2019). Appropriate rootstock selection is significant in increasing the fruit yield and quality of the 'Deveci' , 'Santa Maria, 'Williams' and ' Abate Fetel' , which have an important place in pear production in Turkey, for both the producers to obtain maximum income and the consumers to consume quality products.…”