Horticultural performance of ‘Hass’ avocado grafted onto seedling and clonal rootstocks under tropical wet-dry climate conditions

A First Omics Data Integration Approach in Hass Avocados to Evaluate Rootstock–Scion Interactions: From Aerial and Root Plant Growth to Fruit Development

“…Many research studies have been carried out comparing the differences between the usage of different types of rootstocks in avocado crops considering disease resistance [ 18 ], mineral nutrient uptake [ 19 ] or salinity tolerance [ 20 ]. However, regarding the comparisons between seedling and clonal rootstocks, the results are largely controversial because different agroclimatic and management conditions greatly affect rootstock performance and avocado tree health and development [ 12 , 13 , 14 ]. For this reason, a system research model was based on avocado trees grafted on seedling and clonal rootstocks growing in a soilless and protected system (controlled conditions) to avoid the inclusion of confounding effects.…”

“…Nevertheless, over the past decade, there has been a notable rise in the adoption of clonal rootstocks for avocado cultivation despite their higher cost [ 8 ]. This surge can be attributed to the prospect that orchards featuring genetically identical rootstocks hold the potential to be more consistent and predictable crops, more resistant to diseases, show higher productivity, superior fruit quality, and greater adaptability to environmental conditions in comparison to orchards using seedling rootstocks [ 12 ]. Considering the benefits provided using the adequate rootstocks and the apparent superiority of clonal varieties, the selection of clonal rootstocks that optimize the use of water, allowing crops to resist the effects of drought, could be a key factor maintaining avocado fruit quality standards.…”

“…Research on the performance of different types of rootstocks in avocado cultivation has revealed very controversial results. For instance, it has been observed that avocado trees grafted onto clonal rootstocks, such as Dusa ® , exhibit a notable increase in the yield of larger and elongated fruits, although there are no discernible differences in postharvest fruit quality [ 12 ]. A study comparing seedling and clonal West Indian rootstocks concluded that the non-significant differences identified did not offset the royalty payment associated with the utilization of clonal rootstocks [ 13 ].…”

Desempenho de seedlings de cultivares comerciais como porta-enxertos para abacateiros \'Hass\'

“…Entretanto, tais variáveis também podem ser influenciadas pelos manejos realizados nos pomares (MORAES et al, 2022) o que não aconteceu neste estudo. Outros autores afirmaram que em determinadas condições de cultivo, não há efeito dos porta-enxertos na quantidade e massa dos frutos produzidos pela copa (COHEN et al, 2022).…”