PRODUCTION OF MINI-CUTTINGS AND THE INFLUENCE OF LEAF REDUCTION ON ROOTING OF VINHÁTICO (Plathymenia foliolosa Benth.)

ABSTRACT The objective of this work was to evaluate the production and survival of the mini-stumps in mini-clonal hedge and the effect of leaf reduction of mini-cuttings on rooting and seedling growth of progenies of Vinhático (Plathymenia foliolosa) by mini-cutting. Apical mini-cuttings were used to evaluate the influence of leaf reduction on the rooting of vinhático; the mini-cuttings ranged between 8 to 10 cm in length and samples were subjected to100% leaf reduction (without leaf), 75% of leaf reduction, or no leaf reduction. As for the survival of mini-stumps in mini-clonal hedge, after the fourth successive mini-cuttings collection, P3 and P19 progenies showed the highest survival percentages (64.5% and 61.5%, respectively), while progenies P1 (32.3 %) and P45 (25%) showed the lowest values for this parameter. The average number of mini-cuttings/mini-stump/collection produced ranged from 0.83 (progeny 53) to 4.8 (progeny 01) and the average productivity was 120 m2 mini-stumps/mini-cuttings per collection. These results suggest that leaf reduction in adventitious rooting in mini-cuttings did not result in any difference between foliar treatments without reduction and 75% leaf reduction; however, 100% mortality was observed when the mini-cuttings were made with total leaf reduction.The progenies studied showed potential regeneration of mini-stumps, thus allowing the realization of successive collections of young shoots.

Bibliographic Details

Main Authors:	Neubert,Victor de Freitas, Xavier,Aloísio, Paiva,Haroldo Nogueira de, Dias,Poliana Coqueiro, Gallo,Ricardo
Format:	Digital revista
Language:	English
Published:	Sociedade de Investigações Florestais 2017
Online Access:	http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-67622017000400202
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