Original Article Rice plant response to suspension of the lamina of water. Part III
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Abstract
objective of evaluating the physiological and biochemical response of the rice plant, grown
under anaerobic conditions and exposed to a suspension of the water sheet for a period of 15
days in agricultural performance. Rice plants (cv. 'INCA LP-5') were under semi-controlled
conditions grown in plastic pots. The suspension of the water sheet was at three moments of
its development carried out, at 30, 40 and 50 days after the transplant (DAT). Agricultural
performance, the number of panicles per plant, full grains per panicle and the mass of 100
grains, at 147 DAT were evaluated. A performance correlation was with the height of the
plant made, fresh aerial mass and roots, foliar water potential, stomatic conductance, foliar content of hydrogen peroxide and oxidative damage to lipids, which were at 122 DAT
evaluated. It was obtained that, the number of panicles per plant and the full grains per panicle
were favored with the application of water stress, indicators that contributed to the increase
of agricultural yield in treatments exposed to water stress (30 DAT=23 %, 40 DAT=20 %
and 50 DAT=11 %, compared to the witness). Agricultural yield was correlated with plant
height, fresh aerial and root mass, foliar water potential, stomatic conductance, hydrogen
peroxide foliar contents and oxidative lipid damage.
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