Comportamiento de genotipos de arroz (Oryza sativa L.) promisorios para suelo salino

in the months of march until july (rainy season) of the year 2003, in areas of the ？blas roca？ farm belonging to ？los palacios？ rice agroindustrial enterprise, on a ？gley nodular concretionary soil, the behavior of six lines (3981, 8748, 8738, 4482, 8554, 8741) and three varieties (inca lp-7, iacuba-25 and the commercial variety j-104 as comparison control of rice, seven of them obtained in the breeding program for tolerance to salinity, was studied. the quantitative characters (final plant height, full grains per panicle, panicle per square meter, 1000 grain weight, empty grains per panicle, cycle in days and the agricultural and industrial yields), as well as the qualitative characters (resistance to lodging, shattering, blast and discoloured grain diseases and to the mite steneotarsonemus spinki smiley) were evaluated. some differences among studied genotypes were observed. the highest agricultural and industrial yield and the best behavior to the main plagues and illnesses were obtained for the lines 3981, 8748 and 8554, and the variety inca lp-7.