RICE YIELD PERFORMANCE STABILITY IN DEMONSTRATIONS CONDUCTED DURING KHARIF SEASON
N. Jambhulkar1*, N. C. Rath2, H. N. Subudhi3, Lipi Das4 and G. A. K. Kumar5
1-2, 4-5 Social Sciences Division, Central Rice Research Institute, Cuttack – 753006 India.
3Crop Improvement Division, Central Rice Research Institute, Cuttack – 753006
[Corresponding author E-mail1*: firstname.lastname@example.org]
Received: 29-08-2015 Accepted: 29-09-2015
Rice (Oryza sativa L.) is the staple food for a large proportion of the world’s population. India is one of the largest rice producing country of the world. The rice production areas in the country are very diverse; hence, evaluation of genotype for its stable performance across the environment is vital. This study was undertaken to identify the stable rice varieties tested in five environments. Twelve rice varieties grown in five consecutive years (environments) from 2009-10 to 2013-14 in kharif season were used. The biplot of AMMI analysis showed that the best genotype in environment E3 was G10. G3 and G9 were best in environment E2; G12 was best in environment E1; G8 was best in environment E4 and G1, G4 and G7 were best in environment E5. Stability ranking was done based on AMMI Stability Index (ASI) criteria for all the varieties. Result of AMMI Stability Index (ASI) showed that G2 was the most stable variety followed by G6; and G5 was the most unstable variety followed by G11 out of the studied twelve varieties.
Keywords: Oryza sativa, genotype, AMMI analysis