Using Genotype-by-Environment Interaction for Crop Cultivar Development

The goal of a plant breeding program is to develop new cultivars of a crop kind with improved yield and quality for a target region and end-use. Improved yield across locations and years means better adaptation to the climatic, soil, and management conditions in the target region. Improved or maintained quality renders and adds value to the improved yield. Both yield and quality must be considered simultaneously, which constitutes the greatest challenge to successful cultivar development. Cultivar development consists of two stages: the development of a promising breeding population and the selection of the best genotypes out of it. A complete breeder's equation was presented to cover both stages, which consists of three key parameters for a trait of interest: the population mean (μ), the population variability (σG), and the achieved heritability (h2 or H), under the multi-location, multi-year framework. Population development is to maximize μσG and progeny selection is to improve H. Approaches to improve H include identifying and utilizing repeatable genotype by environment interaction (GE) through mega-environment analysis, accommodating unrepeatable GE through adequate testing, and reducing experimental error via replication and spatial analysis. Related concepts and procedures were critically reviewed, including GGE (genotypic main effect plus genotype by environment interaction) biplot analysis, GGE + GGL (genotypic main effect plus genotype by location interaction) biplot analysis, LG (location-grouping) biplot analysis, stability analysis, spatial analysis, adequate testing, and optimum replication. Selection on multiple traits includes independent culling and index selection, for the latter GYT (genotype by yield*trait) biplot analysis was recommended. Genomic selection may provide an alternative and potentially more effective approach in all these aspects. Efforts were made to organize and comment on these concepts and procedures in a systematic manner.

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Using AMMI approach to delineate genotype by environment interaction and stability of barley (Hordeum vulgare L.) genotypes under northern Indian shivalik hill conditions

Indian Journal of Genetics and Plant Breeding (The) ◽

10.31742/ijgpb.80.3.15 ◽

2020 ◽

Vol 80 (03) ◽

Author(s):

Om Prakash Yadav ◽

A. K. Razdan ◽

Bupesh Kumar ◽

Praveen Singh ◽

Anjani K. Singh

Keyword(s):

Hordeum Vulgare ◽

Grain Yield ◽

Principal Component ◽

Genotype By Environment Interaction ◽

Environment Interaction ◽

Hordeum Vulgare L ◽

Genotype By Environment ◽

Biplot Analysis ◽

Principal Component Axis ◽

Ammi Analysis

Genotype by environment interaction (GEI) of 18 barley varieties was assessed during two successive rabi crop seasons so as to identify high yielding and stable barley varieties. AMMI analysis showed that genotypes (G), environment (E) and GEI accounted for 1672.35, 78.25 and 20.51 of total variance, respectively. Partitioning of sum of squares due to GEI revealed significance of interaction principal component axis IPCA1 only On the basis of AMMI biplot analysis DWRB 137 (41.03qha–1), RD 2715 (32.54qha–1), BH 902 (37.53qha–1) and RD 2907 (33.29qha–1) exhibited grain yield superiority of 64.45, 30.42, 50.42 and 33.42 per cent, respectively over farmers’ recycled variety (24.43qha–1).

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Genotype-by-Environment Interaction in Grain Sorghum. III. Modeling the Impact in Field Environments

Crop Science ◽

10.2135/cropsci1989.0011183x002900020030x ◽

1989 ◽

Vol 29 (2) ◽

pp. 385 ◽

Cited By ~ 22

Author(s):

G. L. Hammer ◽

R. L. vanderlip

Keyword(s):

Genotype By Environment Interaction ◽

Grain Sorghum ◽

Environment Interaction ◽

Genotype By Environment ◽

The Impact

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Exploring genotype‐by‐environment interaction in sweet sorghum under tropical environments

Agronomy Journal ◽

10.1002/agj2.20696 ◽

2021 ◽

Author(s):

Vander Fillipe Souza ◽

Pedro César de Oliveira Ribeiro ◽

Indalécio Cunha Vieira Júnior ◽

Isadora Cristina Martins Oliveira ◽

Cynthia Maria Borges Damasceno ◽

...

Keyword(s):

Sweet Sorghum ◽

Genotype By Environment Interaction ◽

Environment Interaction ◽

Genotype By Environment ◽

Tropical Environments

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Genotype by environment interaction on phenology and synchronous maturity of mungbean

Agronomy Journal ◽

10.1002/agj2.20691 ◽

2021 ◽

Author(s):

Siti Marwiyah ◽

Willy Bayuardi Suwarno ◽

Desta Wirnas ◽

Trikoesoemaningtyas xxx ◽

Surjono Hadi Sutjahjo

Keyword(s):

Genotype By Environment Interaction ◽

Environment Interaction ◽

Genotype By Environment

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Genotype and environment interaction of sweetpotato varieties

Bangladesh Journal of Agricultural Research ◽

10.3329/bjar.v44i3.43481 ◽

2019 ◽

Vol 44 (3) ◽

pp. 501-512

Author(s):

S Sultana ◽

HC Mohanta ◽

Z Alam ◽

S Naznin ◽

S Begum

Keyword(s):

Tuber Yield ◽

Agricultural Research ◽

Genotype By Environment Interaction ◽

Yield Potential ◽

Environment Interaction ◽

Dry Matter Content ◽

Genotype By Environment ◽

Discriminating Power ◽

Study Results ◽

Main Effect

The article presents results of additive main effect and multiplicative interaction (AMMI) and genotype (G) main effect and genotype by environment (GE) interaction (G × GE) biplot analysis of a multi environmental trial (MET) data of 15 sweetpotato varieties released from Bangladesh Agricultural Research Institute conducted during 2015–2018. The objective of this study was to determine the effects of genotype, environment and their interaction on tuber yield and to identify stable sweetpotato genotypes over the years. The experimental layout was a randomized complete block design with three replications at Gazipur location. Combined analysis of variance (ANOVA) indicated that the main effects due to genotypes, environments and genotype by environment interaction were highly significant. The contribution of genotypes, environments and genotype by environment interaction to the total variation in tuber yield was about 60.16, 10.72 and 12.82%, respectively. The first two principal components obtained by singular value decomposition of the centred data of yield accounted for 100% of the total variability caused by G × GE. Out of these variations, PC1 and PC2 accounted for 71.5% and 28.5% of variability, respectively. The study results identified BARI Mistialu- 5, BARI Mistialu- 14 and BARI Mistialu- 15 as the closest to the “ideal” genotype in terms of yield potential and stability. Varieties ‘BARI Mistialu- 8, BARI Mistialu- 11 and BARI Mistialu- 12’ were also selected as superior genotypes. BARI Mistialu- 3 and BARI Mistialu- 13 was comparatively low yielder but was stable over the environment. Among them BARI Mistialu-12, BARI Mistialu-14 and BARI Mistialu-15 are rich in nutrient content while BARI Mistialu-8 and BARI Mistialu-11 are the best with dry matter content and organoleptic taste. Environments representing in 1st and 3rd year with comparatively short vectors had a low discriminating power and environment in 2nd year was characterized by a high discriminating power. Bangladesh J. Agril. Res. 44(3): 501-512, September 2019

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EFFECTS OF GROWTH INHIBITION BY HYDROCORTISONE ACETATE ON VARIANCE IN CHICKENS

Canadian Journal of Genetics and Cytology ◽

10.1139/g70-083 ◽

1970 ◽

Vol 12 (3) ◽

pp. 627-634

Author(s):

J. S. Gavora ◽

G. C. Hodgson

Keyword(s):

Body Weight ◽

External Environment ◽

Hormonal Treatment ◽

Genotype By Environment Interaction ◽

Future Research ◽

Environment Interaction ◽

Internal Environment ◽

Hydrocortisone Acetate ◽

Genotype By Environment ◽

Treatment Interaction

Traditionally genotype by environment interaction studies have dealt with changes in external environment. In this experiment an attempt was made to alter internal environment and keep external environment constant. Cockerels from each of six different commercial stocks were injected with 0,1,2 and 4 mgs hydrocortisone acetate per 100 gms body weight at 14 days of age. This type of hormonal treatment was shown to release additional variability in growth without producing any stock-treatment interaction at the level of means. The results indicate a possible new avenue for future research.

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Genotype by environment interaction for yearling weight in Nellore cattle applying reaction norms models

Animal Production Science ◽

10.1071/an17048 ◽

2018 ◽

Vol 58 (11) ◽

pp. 1996

Author(s):

S. Ribeiro ◽

J. P. Eler ◽

V. B. Pedrosa ◽

G. J. M. Rosa ◽

J. B. S. Ferraz ◽

...

Keyword(s):

Genetic Correlation ◽

Environmental Gradient ◽

Genotype By Environment Interaction ◽

Reaction Norms ◽

Breeding Value ◽

Environment Interaction ◽

Genotype By Environment ◽

Genotype Environment Interaction ◽

Nellore Cattle ◽

Gradient Variation

In the present study, a possible existence of genotype × environment interaction was verified for yearling weight in Nellore cattle, utilising a reaction norms model. Therefore, possible changes in the breeding value were evaluated for 46 032 animals, from three distinct herds, according to the environmental gradient variation of the different contemporary groups. Under a Bayesian approach, analyses were carried out utilising INTERGEN software resulting in solutions of contemporary groups dispersed in the environmental gradient from –90 to +100 kg. The estimates of heritability coefficients ranged from 0.19 to 0.63 through the environmental gradient and the genetic correlation between intercept and slope of the reaction norms was 0.76. The genetic correlation considering all animals of the herds in the environmental gradient ranged from 0.83 to 1.0, and the correlation between breeding values of bulls in different environments ranged from 0.79 to 1.0. The results showed no effect of genotype × environment interaction on yearling weight in the herds of this study. However, it is important to verify a possible influence of the genotype × environment in the genetic evaluation of beef cattle, as different environments might cause interference in gene expression and consequently difference in phenotypic response.

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