Analysis of multi-location data of hybrid rice trials reveals complex genotype by environment interaction

Ponnuswamy, R and Rathore, A and Vemula, A and Das, R R and Singh, A K and Balakrishnan, D and Arremsetty, H S and Vemuri, R B and Ram, T (2018) Analysis of multi-location data of hybrid rice trials reveals complex genotype by environment interaction. Cereal Research Communications (TSI), 46 (1). pp. 146-157. ISSN 0133-3720

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Abstract

The All India Coordinated Rice Improvement Project of ICAR-Indian Institute of Rice Research, Hyderabad organizes multi-location testing of elite lines and hybrids to test and identify new rice cultivars for the release of commercial cultivation in India. Data obtained from Initial Hybrid Rice Trials of three years were utilized to understand the genotype × environment interaction (GEI) patterns among the test locations of five different agro-ecological regions of India using GGE and AMMI biplot analysis. The combined analysis of variance and AMMI ANOVA for a yield of rice hybrids were highly significant for GEI. The GGE biplots first two PC explained 54.71%, 51.54% and 59.95% of total G + GEI variation during 2010, 2011 and 2012, respectively, whereas AMMI biplot PC1 and PC2 explained 46.62% in 2010, 36.07% in 2011 and 38.33% in 2012 of the total GEI variation. Crossover interactions, i.e. genotype rank changes across locations were observed. GGE biplot identified hybrids, viz. PAN1919, TNRH193, DRH005, VRH639, 26P29, Signet5051, KPH385, VRH667, NIPH101, SPH497, RH664 Plus and TNRH222 as stable rice hybrids. The discriminative locations identified in different test years were Coimbatore, Maruteru, VNR, Jammu, Raipur, Ludhiana, Karjat and Dabhoi. The AMMI1 biplot identified the adaptable rice hybrids viz., CNRH102, DRH005, NK6303, NK6320, DRRH78, NIPH101, Signet5050, BPH115, Bio452, NPSH2003, and DRRH83. The present study demonstrated that AMMI and GGE biplots analyses were successful in assessing genotype by environment interaction in hybrid rice trials and aided in the identification of stable and adaptable rice hybrids with higher mean and stable yields.

Item Type: Article
Divisions: UNSPECIFIED
CRP: UNSPECIFIED
Uncontrolled Keywords: G × E interaction, hybrid rice, AICRIP, multivariate methods, crop improvement
Subjects: Others > Crop Improvement
Others > Plant Breeding
Others > Rice
Others > Genetics and Genomics
Depositing User: Mr Ramesh K
Date Deposited: 13 Apr 2018 05:30
Last Modified: 16 Jul 2018 08:31
URI: http://oar.icrisat.org/id/eprint/10563
Official URL: http://dx.doi.org/10.1556/0806.45.2017.065
Projects: UNSPECIFIED
Funders: UNSPECIFIED
Acknowledgement: Authors are highly thankful to the Director, IIRR for his kind support to bring out this publication.
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