Yield and agronomic traits of hybrid rice promising lines and cultivars

Subject Areas : Agroecology Journal

Alireza Tarang ¹ , Saeid Bakhshipour ²

1 - Agricultural Biotechnology Research Institute Agricultural Research, Education and Extension Organization Rasht, Iran
2 - Rice Research Institute Agricultural Research, Education and Extension Organization Rasht, Iran

Received: 2014-10-04 Accepted : 2015-09-17 Published : 2015-11-22

Keywords: o augmented design, o genetic diversity, o germplasm, o hybridization, o promising lines,

Abstract :

 To exchange the genetic materials and germplasm and their evaluation in international level, International Rice Research Institute is releasing hybrid rice promising a few cultivar and lines every year in some countries. This experiment was sent at Rice Research Institute of Iran and laid out in augmented design in two locations (Rasht and Amol). During growth stages some traits such as plant height, tiller number, days to 50% flowering, 100 grain weight, panicle weight, yield and vigor of seedlings were recorded based on standard evaluation system of rice. In Amol, two hybrids (IR80126H and IR80126H) and four restorer lines comprising IR63864-147-1-3-24R, IR69724-126-3-3-2-3R, IR71604-4-1-4-2-3-2-3-2R, IR72102-3-135-1-1-2R were selected because of their suitable phenotypes, high panicle weight and yield and the restorer lines were added to restorer nursery. In Guilan, hybrids such as IR80117H, IR80127H and IR76708H in cause of yield and early maturity were selected and three restorer lines such as IR60199-B-B-2-1R, IR71604-4-1-4-2-3-2-3-2R and IR72102-3-135-1-1-2R were added to parental nursery. Also all of raw data were recorded in the field book and were sent to International Rice Research Institute.