Observações anatômicas em plantas de Coffea arabica L. obtidas por enraizamento de estacas

Abstract

Anatomical observations in rooted cuttings of Coffea arabica L.F1 hybrid cloning using rooting of cuttings is a way to achieve less expensive and quicker Coffea arabica improvement. Cloning is still a problem in Coffea arabica improvement and has been studied by different institutions to develop an efficient methodology. This work aimed to search for the presence of anatomical barriers to rooting of coffee stem cuttings and the origin of adventitious roots, comparing them with the structure of seedling tap roots. Anatomical analyses of young coffee plants were carried out at the Biology Department of the Universidade Federal de Lavras (UFLA), Lavras, MG. Plants of the cultivars Acaiá and Ruby obtained by rooting of cuttings and seedlings were analyzed. No anatomical barriers to adventitious rooting were found in the rooted cuttings. In the cloning plants the rooting arose in close to the vascular tissues. The anatomical study of adventitious roots in the rooted cuttings and seedlings showed the same primary structures.

Influence of culture medium and age of zygotic embryos on in vitro germination of Elaeis guineensis Jacq.

“…According to Jesus et al (2010), root hydraulic conductivity is directly related to vascular cylinder diameter, thus its good development ensures adequate supply of water and minerals to shoots.…”

Modified hydroponics and phenolic foam as technological innovations in the production of coffee seedlings from cuttings

“…Research centers in Brazil are developing hybrid-type cultivars with higher yields than pure-line cultivars, in addition to multiple resistance to pests and diseases (Andreazi et al, 2015). In order to facilitate the propagation of these hybrids, cloning techniques are necessary, among which cutting can be one of the alternatives (Jesus, Carvalho, Castro, & Gomes, 2013).…”

Effect of Growth Regulators in Production and Rooting of <i>Coffea arabica</i> L. Minicuttings

“…The clonal propagation by cutting, traditionally used in the C. canephora, did not succeed in the clonal propagation of C. arabica. Although no anatomical barriers are found for the rooting of C. arabica cuttings from orthotropic sprouts [3], and they have good rooting [2], coffee plants of the arabica species do not naturally produce a large number of orthotropic sprouts, making multiplication difficult by cutting.…”