The determination of the fruit yield, fruit quality and morphological characteristics of Robinson, Nova, Clemantine mandarin types and Henderson grapefruit types obtained by applying gamma ray

In this study, acute gamma ray(?) with source of 60Co were applied from 6 krd/h dose to budwood of Clementine, Nova, Robinson mandarins, Henderson grapefruit in 1989. Types were obtained in result of application used as materials of study. The young trees of land was formed as 4x3 m spacing in the orchards of University of Çukurova, Faculty of Agriculture in 1991. Types of 12 Clementine, 10 obinson, 6 Nova, 26 Henderson within this plot were in M1V3 stage. The fruit yield, fruit quality and fruit characteristics of this genotiypes were examined in Adana ecological conditions during 2002, 2003 and 2004 years. The clones having superior performance were found by using weighed averaged method.As a result, 2/15, 2/21 and 2/8 Clementine, 4/4 and 4/21 Robinson and 7/19 Nova mandarin types were determined with the lowest seed per fruit. The best types were found 1/22 and 2/15 Clementine, 4/4 and 5/1 Robinson, 7/5 and 7/15 Nova mandarin and 5/5, 5/11 and /21 Henderson grapefruit by using weighed averaged method.Key Words; Clementine, Nova, Robinson, Henderson, Mutation