Resumo

CRISTO-VALDES, Elizabeth; GONZALEZ, María C.; VENTURA, Elsa  e  RODRIGUEZ, Aida T.. Effect of salinity in the initial stages of the development of three rice cultivars (Oryza sativa L.). cultrop [online]. 2018, vol.39, n.3, pp.65-70. ISSN 0258-5936.

The work was carried out in the biotechnology laboratory at the Scientific Technological Base Unit “Los Palacios” (UCTB), which belongs to the National Institute of Agricultural Sciences (INCA) in Los Palacios municipality, in province of Pinar del Río in the March to May period. One hundred (100) seeds of three rice cultivars obtained by different methods of improvement, INCA LP-10, J-104 and INCA LP-7, this last salinity tolerant control were selected and were germinated in petri dishes with paper of Filter and wetted with 15 mL the different saline concentrations of sodium chloride (NaCl) (4000, 7000 and 10000 ppm), distilled water was used as the control. The number of germinated seeds was evaluated at 7 days, determining the germination percentage and at 15 days the height of the seedlings, root length and accumulation of fresh and dry biomass were evaluated in 10 seedlings per replicate, being determined the index of Tolerance to salinity. Varietal differences were observed regarding the live response of the cultivars under study with saline concentrations, where the cultivar INCA LP-7 and INCA LP-10 showed the best tolerance indices for these abiotic stress conditions

Palavras-chave : NaCl; abiotic stress; plant breeding.

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