INCREMENTOS NA PRODUÇÃO DE BIOMASSA TOTAL DE CITRONELA POR ESTRESSE SEVERO NO SISTEMA RADICULAR

Taciana da Mata Daflon; Cristina Moll Hüther; Caíssa Machado Perucci Pereira dos Santos; Luiza Ferreira de Carvalho; Nathan Pereira da Costa Correa; Daniela Marques Correia; Carlos Rodrigues Pereira; Thelma de Barros Machado

doi:10.5327/Z2176-947820190438

Authors

Taciana da Mata Daflon Universidade Federal Fluminense https://orcid.org/0000-0002-8775-4176
Cristina Moll Hüther Universidade Federal Fluminense http://orcid.org/0000-0003-0655-5966
Caíssa Machado Perucci Pereira dos Santos Universidade Federal Fluminense https://orcid.org/0000-0001-7779-015X
Luiza Ferreira de Carvalho Universidade Federal Fluminense https://orcid.org/0000-0002-9847-8947
Nathan Pereira da Costa Correa Universidade Federal Fluminense https://orcid.org/0000-0003-0207-839X
Daniela Marques Correia Universidade Federal Fluminense https://orcid.org/0000-0003-0323-2889
Carlos Rodrigues Pereira Universidade Federal Fluminense https://orcid.org/0000-0003-4000-4324
Thelma de Barros Machado Universidade Federal Fluminense https://orcid.org/0000-0001-9449-8695

DOI:

https://doi.org/10.5327/Z2176-947820190438

Keywords:

Cymbopogon nardus L.; root pruning; Carbon assimilation and partitioning; growth; medicinal plant.

Abstract

In order to obtain the best therapeutic quality and productivity of medicinal plants, proper management of the crop is fundamental, since several factors can interfere. Thus, the growth of citronella plants submitted to different levels of cuts in the aerial part and in the roots were analyzed. Five different root roughing ratios (0, 25, 50, 75, 100%) after 145 days of planting of the seedlings and four cuts in the aerial part (leaves): uncut; a cut at 145 DAP (days after planting), along with the cut of the root; a cut at 228 DAP; and cuts at 145 and 228 DAP (two cuts). Four collections for dry matter accumulation and photoassimilate partitioning and treatment with 100% root cut, but without leaf cut, increased the accumulation of dry mass in relation to the other treatments, for the last period of analysis, demonstrating a recovery.