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Genetic tolerance to low temperatures in irrigated rice 124
Streck,Eduardo Anibele; Aguiar,Gabriel Almeida; Silva,Pedro Ujacov da; Fronza,Rafael Tobias Lang; Magalhães Júnior,Ariano Martins de.
ABSTRACT The aim of this study was to characterise genetic variability to low-temperature tolerance in the emergence stage of irrigated-rice genotypes under controlled and field conditions. Thirty-seven genotypes were evaluated, interspersed with controls of different levels of low-temperature tolerance. The design used was of randomised blocks with three replications. The genotypes were submitted to germination and emergence in controlled-temperature trials at 13 ºC (Trial I) and 17 ºC (Trial II), and in field environments with no cover (Trial III) and with a cover of polyethylene (Trial IV), where the soil temperature was monitored. The evaluations were carried out daily by counting the emerged seedlings and later inferring the speed of emergence index...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Oryza sativa L.; Abiotic stress; Cold; Genetic variability.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000300416
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