Abstract
ABSTRACT Background: Despite the importance of Plathymenia reticulata for forestry and ecological purposes, a protocol for the vegetative propagation of the species remains unclear mainly due to the low adventitious rooting of the propagules of the species. In this sense, this work aimed to evaluate the rooting of mini-cuttings of juvenile materials of P. reticulata and our hypothesis: (1) maintaining propagules under mist chamber for different periods affects the rooting process; (2) the mini-stump management system due to the restriction of the root system affects the production of mini-cuttings and the quality of clonal seedlings. Results: It was not necessary for more than 30 days in a mist chamber to induce rooting. The highest percentage of rooting was obtained 50 days after staking. Mini-gardens set up in suspended seed bed and tubes (280 cm3) had the average mini-cuttings productivity of 4.32 and 2.06, respectively, over 270 days of exploration (monthly collections). At 120 days after staking, there was no difference in the survival and in the final quality of clonal seedlings produced. However, clonal seedlings from mini-garden in tubes had higher height, leaf area, and number of first-order roots. Regardless of the mini-garden management, the clonal seedling production index was 50%. Conclusion: We can conclude that P. reticulata seedling production via mini-cutting technique is possible.
Highlights
MATERIAL AND METHODSPlathymenia reticulata Benth. is a tropical forest species of the Fabaceae family
The suspended seed bed mini-garden showed the highest production of mini-cuttings
Mini-cutting of Plathymenia reticulata benth. with mini-stumps conducted in suspended seed bed and tubes
Summary
MATERIAL AND METHODSPlathymenia reticulata Benth. is a tropical forest species of the Fabaceae family. Pessanha et al (2018) reported that matrices have shown irregular behavior in seed production Another drawback to the use of sexual propagation involves the implantation of heterogeneous stands, an outcome that increases costs related to management practices and harvesting. Despite the importance of Plathymenia reticulata for forestry and ecological purposes, a protocol for the vegetative propagation of the species remains unclear mainly due to the low adventitious rooting of the propagules of the species In this sense, this work aimed to evaluate the rooting of minicuttings of juvenile materials of P. reticulata and our hypothesis: (1) maintaining propagules under mist chamber for different periods affects the rooting process; (2) the mini-stump management system due to the restriction of the root system affects the production of mini-cuttings and the quality of clonal seedlings
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