Name: JULIANA DE OLIVEIRA BATISTA NUNES
Publication date: 30/08/2023
Examining board:
Name |
Role |
|---|---|
| ANTELMO RALPH FALQUETO | Examinador Interno |
| JOSÉ ALTINO MACHADO FILHO | Examinador Externo |
| SARA DOUSSEAU ARANTES | Presidente |
Summary: Coffea canephora Pierre ex A. Froehner is an important species for the state of Esp. Holy. One of the limiting factors for coffee production is water deficiency. Thus, an important aspect of growing Conilon coffee is the drought tolerance found naturally in some clones. Once proven that water restriction can be efficient in saving water without affecting the development of the coffee tree, producers will be able to reduce the application of water, the consumption of electricity, obtaining greater economic gains, combining both quantity and quality, and the preservation of the environment. The objective is to understand the effects of the environment on plant development and coffee production. For this study, clones of the coffee tree conilon 109A and 14 will be used, cultivated in rainfed and under irrigation. The design used was randomized blocks and in a 2x2 factorial scheme, with 32 plants and as a border the clones LB1 and 02 characterized as 14 drought tolerant, and 109A drought sensitive that are part of INCAPER's Active Germplasm Bank. With spacing of 2.5 x 2.0m. All data were organized in Microsoft Excel© spreadsheets and submitted to analysis of variance and means compared by Tukey's test at 5% probability, with the aid of the SISVAR computer. Clone 14 in the rainfed environment showed higher means of photosynthetic rate, stomatal conductance, transpiration rate and intrinsic efficiency of carboxylation compared to the irrigated environment. These data show that clone 14 is really tolerant, as it presented higher averages than the irrigated environment.
