Genotype-by-environment effects on the performance of recombinant inbred lines of Virginia-type peanut

Patil, Abhinandan; Hedvat, Ilan; Levy, Yael; Galili, Shmuel; Hovav, Ran

doi:10.1007/s10681-018-2159-6

Cited by 11 publications

(17 citation statements)

References 23 publications

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“…Hanoch and cv. Harari, two closely related Israeli Virginia-type cultivars, was developed [ 20 ] and used for the study. ‘Hanoch’ has been the leading Israeli in-shell peanut cultivar for over two decades.…”

Section: Methodsmentioning

confidence: 99%

“…Each RIL was replicated three times (randomized complete block design), with 16 plants for each RIL in each block. Plots were maintained under full-irrigation conditions and all recommended agronomic practices were carried out as described [ 20 ]. ‘Hanoch’ and ‘Harari’ plants were also grown as controls.…”

Section: Methodsmentioning

confidence: 99%

“…The genetic variability, heritability and genetic advance parameters were calculated in a similar method as previously described [ 20 ]. Briefly, environmental, genotypic and phenotypic coefficients of variation (ECV, GCV and PCV) for existing in traits were estimated using the formula: …”

Section: Methodsmentioning

confidence: 99%

“…wherein, , , and are the phenotypic, genotypic and environmental variance components [ 20 ], respectively, and X is the general mean.…”

Section: Methodsmentioning

confidence: 99%

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Genetic insight and mapping of the pod constriction trait in Virginia-type peanut

et al. 2018

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BackgroundPod constriction is an important descriptive and agronomic trait of peanut. For the in-shell Virginia marketing-type, this trait has commercial importance as well, since deeply constricted pods have a tendency to break, which makes them unmarketable. Classical genetic studies have indicated that pod constriction in peanut is controlled by one to four genes, depending on the genetic background. In all of those studies, pod constriction was evaluated visually as opposed to quantitatively. Here, we examined the genetic nature of this trait in the Virginia-type background. Our study involved 195 recombinant inbred lines (F7RILs) derived from two closely related cultivars that differ in their degree of pod constriction. Pod constriction was evaluated visually and quantitatively in terms of the pod constriction index (PCI), calculated as the average ratio between the pod’s waist and shoulders.ResultsANOVA and genetic parameters for PCI among the F7RILs in three blocks showed very significant genotypic effect (p(F) < 0.0001) and high heritability and genetic gain estimates (0.84 and 0.52, respectively). The mean PCI values of the different RILs had a bimodal distribution with an approximate 1:1 ratio between the two curves. Pod constriction was also determined visually (VPC) by grading the degree of each RIL as ‘deep’ or ‘slight’. The χ2 test was found to not be significantly different from a 1:1 ratio (p = 0.79) as well. SNP-array-based technology was used to map this trait in the RIL population. A major locus for the pod constriction trait was found on chromosome B7, between B07_120,287,958 and B07_120,699,791, and the best-linked SNP explained 32% of the total variation within that region. Some discrepancy was found between the SNPs original location and the genetic mapping of the trait.ConclusionThe trait distribution and mapping, together with data from F1 and F2 generations indicate that in this background the pod constriction is controlled by a major recessive gene. The identity of loci controlling the pod constriction trait will allow breeders to apply marker-assisted breeding approaches to shift allelic frequencies towards a slighter pod constriction and will facilitate future effort for map-based gene cloning.Electronic supplementary materialThe online version of this article (10.1186/s12863-018-0674-z) contains supplementary material, which is available to authorized users.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“…wherein, , , and are the phenotypic, genotypic and environmental variance components [ 20 ], respectively, and X is the general mean.…”

Section: Methodsmentioning

confidence: 99%

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Genetic insight and mapping of the pod constriction trait in Virginia-type peanut

et al. 2018

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“…AMMI models are widely used in plant breeding. In recent years (2017-2019), they have been applied to evaluate various plant species, from the most popular crops such as wheat [18][19][20][21], oilseed rape [17,22], maize [23][24][25], rice [26][27][28][29], and sugar beet [30] to cassava [31], peanuts [32], and non-edible crops such as cotton [33] and willow [16].…”

Section: Introductionmentioning

confidence: 99%

The Characterization of 10 Spring Camelina Genotypes Grown in Environmental Conditions in North-Eastern Poland

et al. 2020

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Camelina (Camelina sativa (L.) Crantz) is an alternative oilseed crop that is garnering increasing popularity due to its multiple applications and greater tolerance to adverse environmental conditions than oilseed rape. The study analyzed selected traits of 10 Canadian and Polish spring camelina genotypes grown in a field experiment in north-eastern Poland in 2015–2018. The greatest differences were observed in seed yield where the effect of weather and environmental conditions explained 72.7% of variance, the effect of genotype explained 5.9% of variance, and the effect of the genotype-by-environment interaction explained 5.7% of total variance. In contrast, 1000-seed weight was not affected by environmental conditions, and it was differentiated only by genotype which explained 73.3% of variance. Genotype was responsible for 4.5%–25.3% of the variance in the remaining traits. The genotype-by-environment interaction explained 2.0%–18.8% of variance in the examined traits. The additive main effects and multiplicative interaction model (AMMI) revealed that genotype 13CS0787-15 was potentially most suited for cultivation in the temperate climate of north-eastern Poland, Central Europe. This genotype was characterized by the highest seed yields and straw yields, as well as the greatest yield stability.

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Mapping of stem rot resistance in peanut indicates significant effect for plant architecture locus

et al. 2022

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Stem rot, caused by the Sclerotium rolfsii, imposes severe yield losses in peanuts (Arachis hypogaea L.) worldwide. Breeding for resistance is challenging because not enough is known about mechanisms for resistance. The goals of this study were to (a) evaluate the field resistance of recombinant inbred lines derived from a resistant × susceptible cross, (b) associate quantitative loci (QTLs), and (c) reveal potential mechanisms for resistance. Lines were inspected during 3 yr in field conditions. Plants were manually inoculated and rated for three parameters: disease level, number of damaged plants/center, and disease power. Significant effects were found for the lines and the environment in all three parameters. Heritability and year‐to‐year correlations were highly significant, suggesting a consistent response of the lines to the stem rot pressure. Quantitative trait loci mapping was performed based on a previously constructed genetic map. Overall, 20 significant QTLs were found for the resistance parameters, concentrating in four locations on chromosomes A07, A03, B03, and B05. Out of the four loci, three were reported in previous studies with different genetic backgrounds suggesting a wide effect. The B05 QTL was the strongest, with the phenotypic variation explained of 11.6–21.7%. Interestingly, this QTL is colocalized with a previously identified major locus for branching habit trait. An additional field trial performed on 14 lines found a significant branching habit effect, wherein bunch‐types lines were more resistant than spreading‐types, suggesting that plant architecture can be a possible factor influencing the infection rate of S. rolfsii on the field level.

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Genotype-by-environment effects on the performance of recombinant inbred lines of Virginia-type peanut

Cited by 11 publications

References 23 publications

Genetic insight and mapping of the pod constriction trait in Virginia-type peanut

Genetic insight and mapping of the pod constriction trait in Virginia-type peanut

The Characterization of 10 Spring Camelina Genotypes Grown in Environmental Conditions in North-Eastern Poland

Mapping of stem rot resistance in peanut indicates significant effect for plant architecture locus

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