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Genotype-environment Interaction and Stability Analysis in Hybrid Rice: an Application of Additive Main Effects and Multiplicative Interaction

M UMMA KULSUM
Plant Breeding Division, Bangladesh Rice Research Institute, Gazipur-1701, Bangladesh

M JAMIL HASAN
Plant Breeding Division, Bangladesh Rice Research Institute, Gazipur-1701, Bangladesh

ANOWARA AKTER
Plant Breeding Division, Bangladesh Rice Research Institute, Gazipur-1701, Bangladesh

HAFIZAR RAHMAN
Plant Breeding Division, Bangladesh Rice Research Institute, Gazipur-1701, Bangladesh

PRIYALAL BISWAS
Plant Breeding Division, Bangladesh Rice Research Institute, Gazipur-1701, Bangladesh

Abstract/ Executive Summary:

Genotype-environment interaction and stability performance were investigated on amylase, protein and grain yield with 13 hybrid rice promising combinations in five environments. The combined ANOVA showed that the mean sum of square due to genotype (G), environment (E) and G × E interaction were significant for amylose content, protein content and grain yield. This suggests a number of variabilities among the genotypes and environments as and the indicated genotypes interacted significantly with environments. The Additive Main Effects and Multiplicative Interaction (AMMI) biplot for yield clearly indicated that the hybrids BR10A/BR12R, II32A/BR15R, II32A/BR16R, II32A/BR10R, BR9A/BR15R, BRRI hybrid dhan2 and BRRI hybrid dhan3 were high yielding, stable and had general adaptability at all locations. The AMMI estimation had a profound effect in producing sharp and stratified ranking patterns and on this basis BRRI hybrid dhan2 would be considered more adapted to a wide range of environments than the rest of the genotypes. The biplot technique was used to identify appropriate genotype to special locations. This consideration on the basis of average yield for specific genotype to the specific location. The hybrid combination II32A/BR12R was more suitable for Gazipur location and the hybrid combination BR10A/BR13R was considered for Comilla region. Barisal was more stable site than other location for grain yield due to IPCA score near zero which had no interaction effect.

Keywords: Adaptability, Stability analysis, Multiplicative interaction, Hybrid rice

Location: Bangladesh Rice Research Institute , Gazipur

Start Date:

End Date:

Program Area: Variety and Species

Commodity: Rice

Objectives:

To identify high yielding stable hybrids and to determine the areas where rice hybrids would be adapted and produce economically competitive yields with high protein and amylose content.

Methodology:

The experiments were conducted under Plant Breeding Division of Bangladesh Rice Research Institute (BRRI) at five different agro-ecological zones (AEZ) in the country. Eleven (9 test and 2 released hybrids) rice hybrids developed at the Bangladesh Rice Research Institute with two popular check variety BRRI dhan28 and BRRI dhan29 were used as experimental materials. The experiments were carried out in a randomized complete block design, with three replications. Each experimental plot was comprised of 30 m². Standard agronomic practices were followed and plant protection measures were taken as required. Two border rows were used to minimize the border effects. Characters studied were amylose and protein contents and grain yield. Ten randomly selected samples were used for recording observations on amylose and protein content. Amylose content was determined after Juliano (1971). Protein contents were calculated from nitrogen and was determined by Micro Kjeldahl method (Lynch and Barbana 1999). Amylose and protein content were measured in percentages. The grain yield (g/plant) data were estimated and corrected at 14% moisture. ANOVA was used and the GEI was estimated by the AMMI model (Zobel et al. 1988). In this model the contribution of each genotype and each environment to the GEI is assessed by use of the biplot graph display in which yield means are plotted against the scores of the IPCA1 (Zobel et al. 1988). The stability parameters, regression coefficient (bi) and deviation from regression (S²di) were estimated according to Eberhart and Russell (1966). Significance of differences among bi value and unity was tested by t test, between S²di and zero by F test (Eberhart and Russell 1966). All the data were subjected to analysis using statistical analysis packa.

Source of Information: Bangladesh J. Bot. 42(1): 73-81, 2013 (June)

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The Additive Main Effects and Multiplicative Interaction (AMMI) biplot for yield clearly indicated that the hybrids BR10A/BR12R, II32A/BR15R, II32A/BR16R, II32A/BR10R, BR9A/BR15R, BRRI hybrid dhan2 and BRRI hybrid dhan3 were high yielding, stable and had general adaptability at all locations. The AMMI estimation had a profound effect in producing sharp and stratified ranking patterns and on this basis BRRI hybrid dhan2 would be considered more adapted to a wide range of environments than the rest of the genotypes. The biplot technique was used to identify appropriate genotype to special locations. This consideration on the basis of average yield for specific genotype to the specific location. The hybrid combination II32A/BR12R was more suitable for Gazipur location and the hybrid combination BR10A/BR13R was considered for Comilla region. Barisal was more stable site than other location for grain yield due to IPCA score near zero which had no interaction effect.

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