Abstract
ABSTRACT This study presents an efficient system with high productivity and quality for Acer palmatum propagation. We evaluated the efficiency of mini-cuttings technique, management of mini-stumps, production of shoots, rooting and root vigor of mini-cuttings on two seasons. The mini-stumps were planted in pots of two liters, put up in two environments (full sunlight area and shade house) and submitted to weekly fertigation. Over six collections, we evaluated the survival and productivity of clonal mini-garden (Experiment I). From these, we performed two experiments with mini-cuttings: Experiment II - mini-cuttings originated from two environments, with 8±1 cm, put to root in two seasons (Spring and Summer); Experiment III - mini-cuttings originated from full sunlight area, with 4±1, 6±1, 8±1, 10±1 cm, put to root in Summer. The mini-cuttings planting was made in plastic tubes of 55 cm³, filled with fine vermiculite and carbonized rice hulls (1:1 v/v), in a greenhouse with intermittent irrigation system. The high rooting (95.0%), mini-stumps survival (100%) and mini-cuttings production (217.5 mini-cuttings m-2 month-1) in clonal mini-garden conducted in full sunlight area shown the technique viability for the species. Mini-cuttings of 8±1 cm favored rooting (96.3%). The mini-cuttings technique is viable for Acer palmatum propagation.
Highlights
Acer palmatum Thunb. (Aceraceae), popularly known as japanese maple or as “acer”, occurs naturally in Japan, Korea and China
The highest percentages of productivity, rooting and root vigor of mini-cuttings were obtained in Summer
Highest survival and productivity of sprouts per mini-stump, as well as the best rooting and root vigor of mini-cuttings are obtained from mini-stumps conducted in full sunlight
Summary
Acer palmatum Thunb. (Aceraceae), popularly known as japanese maple or as “acer”, occurs naturally in Japan, Korea and China. Its commercial importance stems from its use as an ornamental tree, highlighting the characteristics of its reddish leaves (HUGHES et al, 2007), which vary according to genotype, cultural factors and environmental practices (JAKOPIC et al, 2007). The development of a propagation system capable to produce a large number of standardized and classified plants is the major challenge for deciduous species (BRONDANI et al, 2010; STUEPP et al, 2015). These limitations have been discussed throughout the years, especially by the need to produce shoots on only a part of the year due to dormancy of these species
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
