Photoperiod sensitivity, plant height and endosperms characteristics are three of the most important traits for rice cultivar. The results in this study clearly showed that all of four RD 15 lines had agronomic characteristics that were similar to the original RD 15 in most of the important traits. Also, results from of experiment showed was delayed, while non-photoperiod sensitive rice showed normal flowering. This resull was quite similar to Nishida et al. (2004) who presented that long-day condition suppression of rice flowering became apparent when the photoperiod was longer than 13 hours per day. On the other hand, this experiment showed that the lines of RD 15 which were selected for homozygous recessive sd1sd1 genotype were short with same plant height of 89 cm, in conformity with Negrao et al. (2010) who reported that plant height differed significantly between the breeding lines and is controlled by recessive sd1 gene. Besides, glutinous rice endosperm is known to be controlled by recessive waxy gene, wx. Further results of this experiment indicated that rice plants were controlled by wx gene that showed a chalky endosperm grain appearance, a glutinous trait, thus in agreement with Wanchanan et al. (2003) who reported that rice tropical glutinous was controlled by recessive wx gene.