بررسي تنوع ژنتيكي ارقام برنج با استفاده از داده هاي صفات مورفولوژيكي

The investigation of genetic diversity with morphological data in rice varieties COryza sativa L.)

Characterization of genetic diversity and germplasm classification for parental selection in breeding purposes is of great importance. Fourty nine Iranian and forign rice entries were investigated using a simple lattice square design at 2001 in Tonekabon agricultural college. In this investigation, morphological traits were used for evaluation of genetic variability and classification of a collected Iranian and forign rice varieties . Statistical analysis of morphological data showed that there was significant difference between genotypes for all studied trails . The estimated broad sense heritability of traits ranged from 88% for total tiller and flag leaf width, to 99% for number of days to 50% flowering and day to maturity . Cluster analysis by Ward method for agronomic traits divided genotypes into four groups . In conclusion. replication of such trials with more varieties for more accurate resultes is arecommended.