studies of genetic diversity of plant populations are very important tools for plant breeders. in this study, 110 rice genotypes, including 39 iranian local, 20 iranian improved and 51 foreign improved varieties were studied for 14 agronomic traits in the the rectangular lattice design at the rice research institute of iran (rasht). the analysis of variance showed that there were significant di...

Aim This study investigated the impacts of system rice intensification (SRI) and conventional management practice (CP) on growth, grain yield, nitrogen use efficiency by application. Methods Field experiments were conducted in wet dry seasons; each season, experiment was set a split-plot randomized complete block design triplicate with crop practices main plots levels subplots. Results The aver...

Common wild rice (Oryza rufipogon Griff.) is important to broaden the narrow genetic diversity of cultivated rice. To better understand the genetic variation, heritability and genetic correlations of agronomically important traits, 156 F2:3 families derived from the cross between rice (Oryza sativa) and wide rice (O. rufipogon Griff.) were evaluated under field conditions. The Analysis of Varia...

five improved along with three local rice varieties were crossed in a line× tester method in 2001. fifteen f1 hybrids and eight parental genotypes were planted in a randomized complete block design with 3 replications at rice research institute of iran, rasht, in 2002. the main objective of the research was to estimate the general and specific combining ability and gene action for 10 agrnomic a...

This paper aims at investigating the impacts of different planting methods on the yield and Cluster Charactersin different irrigation conditions on wheat (cultivar of Chamran) in Khuzestan for one year in Shavoor agricultural farm located in 70 km north of Ahvaz which lies in E longitude 48˚:28" and N latitude 31˚:50" as split plots in a randomized complete blocks design with three replications...

This paper aims at investigating the impacts of different planting methods on the yield and Cluster Charactersin different irrigation conditions on wheat (cultivar of Chamran) in Khuzestan for one year in Shavoor agricultural farm located in 70 km north of Ahvaz which lies in E longitude 48˚:28" and N latitude 31˚:50" as split plots in a randomized complete blocks design with three replications...

genotypic variation is useful to breeders when selecting genotypes to improve particular traits. inorder to study of genetic diversity 20 genotypes of hordeum murynum studied in the form of randomized complete block design the experimental field of islamic azad university shahre rey branch with 3 replication in the year 2012. notes traits was conducted including days to heading, days to maturit...

Genetic diversity is prerequisite for any crop improvement program as it helps breeders in the development of superior recombinants. Th is study was conducted with the aim of evaluating genetic parameters and phenotypic divergence in a germplasm consisted of twenty rice varieties. High estimates of heritability coupled with high genetic advance found for total grains per panicle, fi lled grains...