IACUBA 28: rice mutant variety for irrigated areas with its cultural management

Abstract:

The variety IACuba 28 was obtained by irradiation of seeds of the cultivar J 104, with 20 Gy of fast neutrons of 14 MeV in 1989. From 1990 to 1995 was conducted the selection, in order to reach the homocigosity in the mutant line J 104 N2- C4-4-5P1-3-1. This mutant, with the code number 3763, was included in the observational trials in 1996. In dry season 1996-1997 began the evaluation in multi location trials around the country. From 1999 to 2001 the new variety was evaluated in validation test in four different provinces. IACuba 28 has a semi dwarf type with high tillering ability and resistance to lodging. This variety possess high yield potential (yielded 0.7 t/ha and 0.5 t/ha in dry and wet season, respectively, over the parent), and showed resistance to tagosodes orizicolus Muir., Pyricularia grisea Sacc. and other diseases, as well as presented a better grain quality than the parent variety. The cultural management for the new variety was determined, including nitrogen fertilization, sowing density, moisture range to harvest, dormancy of the seeds and the milling technology.

Año de publicación:

2001

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