PERFORMANCE OF EIGHT PRUNUS ROOTSTOCKS FOR PEACH IN SOUTH BRAZIL

The objective of this study was to evaluate the influence of different rootstocks on the yield efficiency of ‘Chimarrita’ and ‘Maciel’ peach from 2009 to 2012 in southern Rio Grande, Brazil.
Eight rootstocks were tested for both cultivars: ‘Aldrighi’, ‘Capdeboscq’, ‘Flordaguard’, ‘Nemaguard’, ‘Okinawa’, ‘Japanese Apricot’, ‘Tsukuba’ and ‘Viamão’. Trees were trained to the “V” orchard training system.
The variables analyzed were accumulated production (kg tree^-1), average fruit weight (g), soluble solids (°Brix), titratable acidity (meq 100 mL^-1), SS/TA ratio, and firmness (N). Peach fruit production and quality of ‘Chimarrita’ and ‘Maciel’ varied among rootstocks and years. ‘Tsukuba’, ‘Flordaguard’ and ‘Aldrighi’ had the highest cumulative production in ‘Chimarrita’. ‘Okinawa’ and ‘Japanese Apricot’ induced fruits with a higher content of soluble solids, whereas ‘Japanese Apricot’ resulted in a great sugar/acid ratio.
In regards to ‘Maciel’, the greater cumulative production was provided by either root¬stocks ‘Capdeboscq’ and ‘Nemaguard’. Differences were also observed for average fruit weight, acidity and SS/TA ratio.
Regardless of rootstock, ‘Japanese Apricot’ provided the lowest cumulative production and highest soluble solids and SS/TA ratio.

VIII International Peach Symposium

J.C. Fachinello, A. Pretto, S. Padilha Galarça , D.L. Betemps

Prunus persica L. (Batsch), productivity, fruit acidity, fruit firmness

https://doi.org/10.17660/ActaHortic.2015.1084.9