International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2017, Volume : 5, Issue : 4
First page : (892) Last page : (908)
Article doi: http://dx.doi.org/10.18782/2320-7051.4079
Studies on Stability Analysis for Grain Yield and its Attributes in Rice (Oryza sativa L.) Genotypes
Sriram Ajmera¹*, S. Sudheer Kumar² and V. Ravindrababu³
1Scholar,2 Professor
Department of Genetics and Plantbreeding, College of Agriculture, PJTSAU, Rajendranagar, Hyderabad
3Director, Indian Institute of Rice Research, Rajendranagar, Hyderabad
*Corresponding Author E-mail: srinaik53@gmail.com
Received: 17.06.2017 | Revised: 27.06.2017 | Accepted: 29.06.2017
ABSTRACT
The present investigation entitled “Studies on Stability Analysis for Grain Yield and Its Attributes in Rice (Oryza sativa L.) Genotypes” was undertaken with thirty seven rice genotypes including two checks at three different locations situated at different agro-climatic regions of TELANGANA viz., Directorate of Rice Research farm at ICRISAT, Medak (Central Telangana Zone), Regional Agricultural Research Station, Jagtial (Northern Telangana Zone) and Agricultural Research Station, Kampasagar (Southern Telangana Zone) for studying stability for eight characters viz., days to 50 per cent flowering, plant height, panicle length, number of productive tillers per plant, total number of grains per panicle, number of filled grains per panicle, 1000- grain weight and grain yield per plant. At three locations, the analysis of variance indicated significant variation among the genotypes for all the characters studied. The pooled analysis of variance indicated significant variation among the environments, genotypes and Genotype x Environment interaction for all the characters studied. The significance of genotype and environment interaction suggests that genotypes behaved differently in different environment. The thirty seven Genotypes showed significant differences for all the characters, when tested against pooled error and pooled deviation. It reveals that the selected genotypes are having significant variation for all characters and may not showing uniform performance in different environments. Environments showed highly significant differences for all the characters under study except thousand grain weight, when tested against pooled error and panicle length and 1000 grain weight showed no significant differences, when tested against pooled deviation. It reveals that wide difference between environments. Whereas, Genotype x Environment interaction components showed highly significant differences for all the characters, when tested against pooled error and days to 50% flowering, plant height, total number of grains per panicle, and 1000 grain weight showed significantly differences, when tested against pooled deviation. It indicates wide differential behavior of genotypes in changing environments. The environment + (Genotype x Environment) was significant for all the characters, when tested against pooled error and all the characters shown significant differences except panicle length, number of filled grains when tested against pooled deviation.
Full Text : PDF; Journal doi : http://dx.doi.org/10.18782
Cite this article: Ajmera, S., Kumar, S.S. and Ravindrababu, V., Studies on Stability Analysis for Grain Yield and its Attributes in Rice (Oryza sativa L.) Genotypes, Int. J. Pure App. Biosci.5(4): 892-908 (2017). doi: http://dx.doi.org/10.18782/2320-7051.4079
