Cutting diameter influence in the rooting of Tecoma stans (L.) Juss. ex Kunth

Daniela Biondi, Edgard Alfredo Bredow, Luciana Leal

Abstract


Tecoma stans (L.) Juss. ex Kunth (Bignoniaceae) is a native tree from the Americas and Antilles and was introduced in Brazil for ornamental reasons, but became an invasive species in degraded areas and pastures in the south region. In Paraná State it is considered a noxious invasive species and its entrance, planting, transport, production and the commerce of its seedlings, seeds, pieces of stem and roots are forbidden. The aim of this research was to prove the rooting ability potential of hardwoody stem cuttings of Tecoma stans with different diameter thickness. The experiment was conducted in a completely randomized design with three treatments: T1 = stem diameter from 0.60 – 0.80 cm, T2 =stem diameter from 0.81 – 1.00 cm and T3 = stem diameter from 1.01 – 1.20 cm. The evaluated variables were: rooting rate, the number of sprouting per cutting, length of sprouting per cutting (cm), cutting rate with more than ten roots and length of the three larger roots formed per cutting (cm). All the cuttings showed 100% of rooting. The T2 and T3 treatments differed statistically from T1 treatment for sprouting length, while T2 differed from the others, for the roots length. The easiness of this species to propagate in a vegetative way reinforces and proves its invasive characteristics.


Keywords


Amarelinho; Stem cutting; Hardywood cuttings; Invasive species.



DOI: http://dx.doi.org/10.5433/1679-0359.2008v29n2p277

Semina: Ciênc. Agrár.
Londrina - PR
E-ISSN 1679-0359
DOI: 10.5433 / 1679-0359
E-mail:  semina.agrarias@uel.br
Este obra está licenciado com uma Licença  Creative Commons Atribuição-NãoComercial 4.0 Internacional