INITIAL DEVELOPMENT AND GAS EXCHANGE OF Talisia subalbens (MART.) RADLK. UNDER DIFFERENT SHADING CONDITIONS

Fernanda Carlota  Nery; Hilton Morbeck de  Oliveira; Amauri Alves de  Alvarenga; Sara  Dousseau; Evaristo Mauro de  Castro; Ana Carolina Atala Lombelo  Campos

INITIAL DEVELOPMENT AND GAS EXCHANGE OF Talisia subalbens (MART.) RADLK. UNDER DIFFERENT SHADING CONDITIONS

Autores

Fernanda Carlota Nery

Hilton Morbeck de Oliveira

Amauri Alves de Alvarenga

Sara Dousseau

Evaristo Mauro de Castro

Ana Carolina Atala Lombelo Campos

Editor

Universidade Federal de Viçosa

Descripción

Ecophysiological studies under semi-controlled conditions in nurseries and greenhouses are essential to enable the use of native species to recover degraded areas and for commercial planting. Talisia subalbens (Mart) Radlk, 'cascudo', is a native fruiting species of the Cerrado on the verge of extinction. The ecophysiological performance of this species was evaluated in nursery conditions under different levels of shading (full sunshine, 30%, 50% and 70%). Initial growth, biomass allocation, gas exchange and chlorophyll content of the plants were analyzed. Full sunshine cultivated plants showed a higher accumulation of total, shoot, and root dry biomass. There was no significant difference in the root/shoot ratio among the treatments. Seedlings cultivated under full sunshine and 30% shading showed higher values for height, basal diameter, and leaf area. Differences in stomata conductance and photosynthesis rate were not observed among the different shading levels. Plants cultivated under 70% of shading had higher contents of chlorophyll a, b, and total. During the initial phase with higher levels of radiation were fundamental for the development of T. subalbens seedlings.