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| Main Author: | |
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| Format: | Artículo científico |
| Language: | en |
| Published: |
Universidade Estadual de Maringá
2017
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| Online Access: | https://www.redalyc.org/articulo.oa?id=303050431014 https://www.redalyc.org/journal/3030/303050431014/ https://www.redalyc.org/journal/3030/303050431014/html/ https://www.redalyc.org/journal/3030/303050431014/303050431014.epub https://www.redalyc.org/journal/3030/303050431014/movil |
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Table of Contents:
- Successive mini-cuttings collection in Piptocarpha angustifolia mini-stumps: effects on maturation, adventitious root induction and root vigor Carlos André Stuepp Ivar Wendling Henrique Soares Koehler Katia Christina Zuffellato-Ribas Agrociencias Juvenility root induction ontogenetic age multiplication rate vegetative propagation The low percentage of seed germination and adventitious root induction in cuttings of Piptocarpha angustifolia has limited its silvicultural use. Thus, we studied the effect of tissue maturation on successive collections of mini-cuttings grown in a semi-hydroponic system. Likewise, we evaluated potential multiplication via the mini-cutting technique by assessing the survival and productivity of mini- stumps as well as the formation of adventitious roots and the root vigor. We ma de 32 sprout collections during two years in a clonal mini-garden. From these collections, mini-cutting experiments were installed throughout several season s. Mini-cuttings of 8 ± 1 cm long were prepared, planted in boxes with vermiculite and carbonized rice husk (1:1 v/v) and placed in a greenhouse. After 70 days, we evaluated the adventitious rooting percentage as well as the adventitious root an d aerial vigor of the mini-cuttings. The appropriate survival of mini-stumps (68%) an d the annual produc tion of mini-cuttings per square meter (2,227) reflected the efficiency of the semi-hydroponic sy stem for this species. The increasing rooting, multiplication rate and root vigor indicate no maturity in the course of the collection of mini-cuttings in P. angustifolia mini-stumps . 2017 artículo científico 1679-9275 https://www.redalyc.org/articulo.oa?id=303050431014 https://www.redalyc.org/journal/3030/303050431014/ https://www.redalyc.org/journal/3030/303050431014/html/ https://www.redalyc.org/journal/3030/303050431014/303050431014.epub https://www.redalyc.org/journal/3030/303050431014/movil en http://www.redalyc.org/revista.oa?id=3030 Acta Scientiarum. Agronomy application/pdf Universidade Estadual de Maringá Acta Scientiarum. Agronomy (Brasil) Num.2 Vol.39