Characterization and Comparative Assessment of Ten Advanced Lines of Aus Rice (Oryza sativa)
Aliya Adiba Khanam
Department of Genetics and Plant Breeding, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh.
Mokhshedul Haque
Department of Agricultural Extension, Ministry of Agriculture, Government of the People’s Republic of Bangladesh, Bangladesh.
Shah Mohammad Kamrul Hasan
Soil Resource Development Institute, Regional Laboratory, Rangamati, Ministry of Agriculture, Bangladesh (SRDI), Bangladesh.
S. M. Abdul Gani
Department of Agricultural Botany, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh.
Ripon Chandra Karmoker
Department of Agriculture Extension and Information System, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh.
Md. Imdadul Haque
Department of Genetics and Plant Breeding, Patuakhali Science and Technology University, Bangladesh.
Mirza Golam Morshed
Department of Agricultural Extension, Ministry of Agriculture, Government of the People’s Republic of Bangladesh, Bangladesh.
Khalid Syfullah *
Department of Genetics and Plant Breeding, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh.
Md. Shahidur Rashid Bhuiyan
Department of Genetics and Plant Breeding, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh.
*Author to whom correspondence should be addressed.
Abstract
The present study focuses on the characterization and comparative assessment of ten advanced lines of Aus rice (Oryza sativa L.), an ecotype known for its adaptability to adverse environmental conditions. The experiment was conducted at Sher-e-Bangla Agricultural University, Bangladesh, during the Aus season of 2017, using a Randomized Complete Block Design (RCBD) with three replications. Various agronomic traits, including plant height, panicle length, tiller number, and yield components, were recorded and analyzed to assess genetic variability. Significant genetic diversity was observed among the genotypes, with high heritability estimates for key traits, indicating their potential for selection in breeding programs. Correlation and path coefficient analyses revealed strong associations between plant height, panicle length, and grain yield, highlighting their importance in yield improvement strategies. The findings emphasize the genetic potential of Aus rice for breeding high-yielding, stress-tolerant varieties, contributing to global food security and sustainable rice production.
Keywords: Aus rice, plant height, panicle length, tiller number, genetic diversity, rice production, randomized complete block design (RCBD)