Banca de DEFESA: ANA CAROLINA CAVALCANTE JUCÁ

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : ANA CAROLINA CAVALCANTE JUCÁ
DATA : 26/02/2019
HORA: 09:00
LOCAL: Sala A
TÍTULO:

MORPHOPHYSIOLOGICAL ANSWERS OF COQUITER CHANGES
SUBMITTED TO ARTIFICIAL DISEASE

PALAVRAS-CHAVES:

Growth, recovery, gas exchange.

PÁGINAS: 40
GRANDE ÁREA: Ciências Agrárias
ÁREA: Agronomia
SUBÁREA: Fitossanidade
ESPECIALIDADE: Entomologia Agrícola
RESUMO:

Coconut farming has great socio-economic importance, especially for regions
North and Northeast, generating employment and income for inhabitants of these regions. This one
The objective of this study was to evaluate the effects of defoliation on
Cocos nucifera seedlings, performed at different levels. Four
treatments: without defoliation; defoliation of 30%; 60% and 90%. Were
measured gas exchange variables: Liquid assimilation rate of CO2 (A)
Stomatal conductance (Gs), transpiration rate (E) and intercellular carbon ratio and
atmospheric carbon (Ci / Ca) in addition to growth variables of two materials
the Brazilian dwarf coconut and the PB 121 Hybrid.
variance at the end of the experiment, where the results show that for the PB 121 hybrid,
the gas exchange variables did not obtain a significant difference, except the relation
Ci / Ca that obtained the highest rates for the control treatment. On the other hand, the
The net assimilation of CO2 was significantly lower for treatments of 60 and
90% of defoliation of the Brazilian dwarf coconut. The treatment of 30% of
hybrid PB 121 had its leaf area equal to the control treatment, showing its
foliar recovery, however, the T60 and T90 were significantly lower. In case
of Brazil's green dwarf, no level of defoliation was able to recover its area
leaf, being, all proportionally inferior to the control treatment. Plants that
suffered higher percentage of defoliation, presented lower height, for the two materials
genetics. It was concluded that the artificial defoliation influenced negatively, the
growth of coconut seedlings, not reaching satisfactory parameters for the field.

MEMBROS DA BANCA:
Presidente - 3266519 - TELMA FATIMA VIEIRA BATISTA
Externo ao Programa - 3065086 - GLEDSON LUIZ SALGADO DE CASTRO
Externo à Instituição - WALTER VELLASCO DUARTE SILVESTRE - UFRA
Externo à Instituição - PAULO MANOEL PONTES LINS - NENHUMA