Grain yield in rice is a complex trait multiplicatively determined by its three component traits: number of panicles, number of grains per panicle, and grain weight; all of which are typical quantitative traits. The developments in genome mapping, sequencing, and functional genomic research have provided powerful tools for investigating the genetic and molecular bases of these quantitative trai...

general and specific combining ability of some rice lines and cultivars with irri sources were determined using the line × tester procedure (5 pure lines were crossed with 4 local cultivars as tester). parents and their progenies were planted in a randomized complete block design with three replications in the research field of iran rice research institute. traits such as yield and its componen...

The transition from vegetative to reproductive phase, flowering per se, floral organ development, panicle structure and morphology, meiosis, pollination and fertilization, cytoplasmic male sterility (CMS) and fertility restoration, and grain development are the main reproductive traits. Unlocking their genetic insights will enable plant breeders to manipulate these traits in cereal germplasm en...

Tropospheric ozone causes various negative effects on plants and affects the yield and quality of agricultural crops. Here, we report a genome-wide association study (GWAS) in rice (Oryza sativa L.) to determine candidate loci associated with ozone tolerance. A diversity panel consisting of 328 accessions representing all subgroups of O. sativa was exposed to ozone stress at 60 nl l(-1) for 7h ...

The panicle architecture is a critical determinant of the reproductive success rice plants and has direct impact on grain production. In this study, we evaluated genetic variation parameters in fifteen genotypes compared them with five commonly grown cultivars study area to assess their potential for crop improvement initiatives. selection 15 was based specific criteria, including diversity ori...

Eleven rice hybrids including two check varieties were evaluated to approximate their genetic variability, heritability and advance for ten quantitative traits. The analysis of variance illustrated that all the traits differed significantly indicating enough variation is presenting studied materials. Among desirable number filled spikelet’s per panicle was found have highest both phenotypic gen...