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| Author(s): |
Felipe Fadel Sartori
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | Piracicaba. |
| Institution: | Universidade de São Paulo (USP). Escola Superior de Agricultura Luiz de Queiroz (ESALA/BC) |
| Defense date: | 2016-01-20 |
| Examining board members: |
Durval Dourado Neto;
Sharon E Benes;
Tiago Tezotto
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| Advisor: | Durval Dourado Neto |
| Abstract | |
The stress caused by water deficit in bean plants is described as responsible for changes in carbon assimilation rates and ethylene production. The goal of this study was assess and characterize the photosynthetic and hormonal behaviour of bean plants, variety IAC Imperador, under different soil moisture contents during its cycle. Plants grown in pots were imposed to two, four and six days without irrigation at vegetative or reproductive phases, assessing crop evapotranspiration rate, leaf water potential, leaf temperature, stomatal conductance, transpiration, photosynthesis, ethylene production, number of pods per plant, number of grains per pod, grain average weight and yield per plant, comparing treatments under water stress against control with daily irrigation. Plants showed significant decreases in stomatal conductance, transpiration and photosynthesis with only two days without irrigation in both plant development stages. Plants from none of the seven treatments showed increased ethylene production when compared against plants from control with daily irrigation. There was no significant statistical difference among treatments for yield components. The variety showed characteristics that may favour the tolerance to low soil moisture periods. (AU) | |
| FAPESP's process: | 14/13442-4 - Effect of use of ethylene synthesis inhibitor on common bean |
| Grantee: | Felipe Fadel Sartori |
| Support Opportunities: | Scholarships in Brazil - Master |