Sib Competition as an Element of Genotype-Environment Interaction for Body Size in the Great Tit

1988 ◽  
pp. 124-137 ◽  
Author(s):  
A. J. van Noordwijk
Keyword(s):  
Body Size ◽  
Great Tit ◽  
Environment Interaction ◽  
Genotype Environment Interaction

Genetic Variation and Causes of Genotype-Environment Interaction in the Body Size of Blue Tit (Parus caeruleus)

Genetics ◽  
1998 ◽  
Vol 148 (3) ◽  
pp. 1233-1244 ◽  
Author(s):  
Juha Merilä ◽  
James D Fry
Keyword(s):  
Genetic Variation ◽  
Body Size ◽  
Genetic Variance ◽  
Natural Populations ◽  
The Body ◽  
Environment Interaction ◽  
Parus Caeruleus ◽  
Genotype Environment Interaction ◽  
The Poor ◽  
Good Environment

Abstract In several studies of natural populations of birds, the heritability of body size estimated by parent-offspring regression has been lower when offspring have developed in poor feeding regimens than when they developed in good feeding regimens. This has led to the suggestion that adaptation under poor regimens may be constrained by lack of genetic variation. We examined the influence of environmental conditions on expression of genetic variation in body size of nestling blue tits (Parus caeruleus) by raising full sibs in artificially reduced and enlarged broods, corresponding to good and poor feeding regimens, respectively. Individuals grown in the poor regimen attained smaller body size than their sibs grown in the good regimen. However, there was among-family variation in response to the treatments—i.e., genotype-environment interactions (GEIs). Partitioning the GEI variance into contributions attributable to (1) differences in the among-family genetic variance between the treatments and (2) imperfect correlation of genotypic values across treatments identified the latter as the main cause of the GEI. Parent-offspring regressions were not significantly different when offspring were reared in the good environment (h2 = 0.75) vs. when they were reared in the poor environment (h2 = 0.63). Thus, there was little evidence that genetic variance in body size was lower under the poor conditions than under the good conditions. These results do not support the view that the genetic potential for adaptation to poor feeding conditions is less than that for adaptation to good conditions, but they do suggest that different genotypes may be favored under the different conditions.

Quantitative Genetics of Ovariole Number in Drosophila melanogaster. II. Mutational Variation and Genotype-Environment Interaction

Genetics ◽  
1998 ◽  
Vol 148 (1) ◽  
pp. 201-210 ◽  
Author(s):  
Marta L Wayne ◽  
Trudy F C Mackay
Keyword(s):  
Body Size ◽  
Mutation Accumulation ◽  
Stabilizing Selection ◽  
Environment Interaction ◽  
Weak Selection ◽  
Environmental Variance ◽  
Empirical Observation ◽  
Competitive Fitness ◽  
Genotype Environment Interaction ◽  
Ovariole Number

Abstract The rare alleles model of mutation-selection balance (MSB) hypothesis for the maintenance of genetic variation was evaluated for two quantitative traits, ovariole number and body size. Mutational variances (VM) for these traits, estimated from mutation accumulation lines, were 4.75 and 1.97 × 10−4 times the environmental variance (VE), respectively. The mutation accumulation lines were studied in three environments to test for genotype × environment interaction (GEI) of new mutations; significant mutational GEI was found for both traits. Mutations for ovariole number have a quadratic relationship with competitive fitness, suggesting stabilizing selection for the trait; there is no significant correlation between mutations for body size and competitive fitness. Under MSB, the ratio of segregating genetic variance, VG, to mutational variance, VM, estimates the inverse of the selection coefficient against a heterozygote for a new mutation. Estimates of VG/VM for ovariole number and body size were both approximately 1.1 × 104. Thus, MSB can explain the level of variation, if mutations affecting these traits are under very weak selection, which is inconsistent with the empirical observation of stabilizing selection, or if the estimate of VM is biased downward by two orders of magnitude. GEI is a possible alternative explanation.

TO THE EXPERIMENTAL CONFIRMATION OF THE HYPOTHESIS ABOUT AN ECO-GENETIC NATURE OF THE PHENOMENON GENOTYPE * ENVIRONMENT INTERACTION FOR WOODY PLANTS

2018 ◽  
Vol 53 (1) ◽  
pp. 151-156 ◽  
Author(s):  
V.A. Dragavtsev ◽  
◽  
I.A. Dragavtseva ◽  
I.L. Efimova ◽  
A.P. Kuznetsova ◽  
...  
Keyword(s):  
Woody Plants ◽  
Experimental Confirmation ◽  
Environment Interaction ◽  
Genotype Environment Interaction ◽  
Genetic Nature

Genotype-Environment Interaction in Calf Production. II. Live Measurements and Carcass Traits

1973 ◽  
Vol 36 (3) ◽  
pp. 471-475 ◽  
Author(s):  
T. R. Batra ◽  
W. R. Usborne ◽  
D. G. Grieve ◽  
E. B. Burnside
Keyword(s):  
Carcass Traits ◽  
Environment Interaction ◽  
Genotype Environment Interaction

METHODS FOR EVALUATING THE GENOTYPE-ENVIRONMENT INTERACTION IN BREEDING WINTER WHEAT FOR PRODUCTIVITY

2020 ◽  
Vol 15 (1) ◽  
pp. 56-64
Author(s):  
Irina Manukyan ◽  
◽  
Madina Basieva ◽  
Elena Miroshnikova ◽  
◽  
...  
Keyword(s):  
Winter Wheat ◽  
Environment Interaction ◽  
Genotype Environment Interaction

Genotype ✕ Environment Interaction for Reed Canarygrass Forage Yield 1

Crop Science ◽  
1984 ◽  
Vol 24 (4) ◽  
pp. 633-636 ◽  
Author(s):  
M. D. Casler ◽  
A. W. Hovin
Keyword(s):  
Forage Yield ◽  
Environment Interaction ◽  
Reed Canarygrass ◽  
Genotype Environment Interaction

Genotype and Genotype ✕ Environment Interaction Effects on Forage Yield and Quality of Crested Wheatgrasses 1

Crop Science ◽  
1984 ◽  
Vol 24 (3) ◽  
pp. 559-564 ◽  
Author(s):  
J. F. S. Lamb ◽  
K. P. Vogel ◽  
P. E. Reece
Keyword(s):  
Interaction Effects ◽  
Forage Yield ◽  
Environment Interaction ◽  
Yield And Quality ◽  
Genotype Environment Interaction

Regression Analysis of Genotype‐Environment Interaction in Smooth Bromegrass 1

Crop Science ◽  
1979 ◽  
Vol 19 (3) ◽  
pp. 393-396 ◽  
Author(s):  
Wai‐Koon Tan ◽  
Geok‐Yong Tan ◽  
P. D. Walton
Keyword(s):  
Regression Analysis ◽  
Environment Interaction ◽  
Smooth Bromegrass ◽  
Genotype Environment Interaction

scholarly journals Adaptability and genotype-environment interaction of finger millet (Eleusine coracana (L.) Gaertn) varieties in North Eastern Ethiopia

2018 ◽  
Vol 13 (26) ◽  
pp. 1331-1337
Author(s):  
Mamo Mulugeta ◽  
Worede Fisseha ◽  
Bezie Yemata ◽  
Assefa Solomon ◽  
Gebremariam Tsegaye
Keyword(s):  
Finger Millet ◽  
Eleusine Coracana ◽  
Environment Interaction ◽  
Eastern Ethiopia ◽  
Genotype Environment Interaction ◽  
North Eastern

Intraspecific responses of medicinal plants: Genotype-environment interaction may alter drug quality of aromatic plants

2019 ◽  
Vol 86 ◽  
pp. 103914
Author(s):  
Éva Németh-Zámboriné ◽  
Péter Rajhárt ◽  
Katarzyna Seidler-Łożykowska ◽  
Zsuzsanna Pluhár ◽  
Krisztina Szabó
Keyword(s):  
Medicinal Plants ◽  
Environment Interaction ◽  
Aromatic Plants ◽  
Drug Quality ◽  
Genotype Environment Interaction ◽  
Intraspecific Responses
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