[Screening of Different Rice Varieties (oryza-sativa L) for Their Response To Invitro Culture]

31 rice varieties have been tested for their response to in vitro culture. Some parameters were considered: rate of callogenesis, growth of the calli and plant regeneration through somatic embryogenesis. Linsmaier & Skoog (1965) medium supplemented by BAP, 2,4-D and NAA has been used for callus induction. Explants were mature embryos and regeneration was obtained on modified LS media. Differences have been observed between varieties and 7 out of the 31 tested genotypes showed good growth and differentiation levels: they could be used for in vitro selection.