Fenotipe Keturunan Diploid Dan Triploid Persilangan Ikan Koi Kohaku Dan Sanke Betina Dengan Jantan Putih Dan Merah

Abstract

This study was done to discover the effect of addition of chromosome number on phenotype F1 hybrid of females kohaku (white-red) and sanke (white-red-black) koi with males white and red koi. The white and red males koi were the F1 of gynogenesis. Spawning of koi was done by hormonal (ovaprim 0,5 ml/kg body weight) and fertilization was done artificially. Triploidization was done by heat shock at 40C during 1,0-1,5 minutes after 2-3 minute from egg fertilization. Colour analysis was done on 4 months old fish. Triplodization was succeeding on 86,67%. Addition of chromosome number on koi due to triploidization was suppressed the percentage of koi with combination color (kohaku, shiro-bekko, hi-utsuri, and sanke). It was seen on hybridization of sanke vs white koi as much as 5,55%, while on sanke vs red koi reached 45,02%. Hybridization of kohaku vs white koi as well as kohaku vs red koi produced higher percentages of kohaku compared to kohaku vs kohaku.