Heritability and correlation among potato tuber traits

Bisognin, Dílson Antônio; Rigão, Maria Helena; Lopes, Sidinei José; Storck, Lindolfo

doi:10.1590/s1984-70332012000300009

Cited by 7 publications

(4 citation statements)

References 11 publications

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“…Breeders can generally achieve genetic gain when selected individuals have a better genotypic profile than unselected individuals (i.e., a better combination of alleles involved in the genetic determinism of the trait of interest). The best conditions to optimize the response to selection are: high phenotypic variation, high heritability, and high selection pressure (Bisognin et al, 2012). It is possible to benefit from all genetic effects (additive, dominance, and epistatic effects) when considering selection for clonally propagated crops.…”

Section: Methodsmentioning

confidence: 99%

Evaluation of Vegetative Growth, Yield and Quality Related Traits in Taro (Colocasia esculenta [L.] Schott).

et al. 2016

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Taro (Colocasia esculenta [L.] Schott) breeders apply heavy selection pressure on yield during the seminal (F1) and first clonal (C1) generations. However, the genetic gain achieved with this practice has never been evaluated and prior accurate assessment of the genetic control of the traits under selection is required. The present study aimed at evaluating broad‐sense heritability, between‐trait and between‐generation correlations, and genetic gain for traits related to vegetative growth, yield, and corm quality. A fully randomized‐block trial consisting of 13 full‐sib families (1890 genotypes) was set up and measured in F1 and C1 generations. ANOVAs were performed with mixed models, considering spatial autocorrelations when necessary. Chi‐square tests revealed the stability of the presence or absence of stolons, suckers, and inflorescences between F1 and C1, suggesting strong genetic control for such organs. Highly fitted models resulted in particularly accurate predicted genetic values. Heritability and genetic gain computations assumed unbalanced data and gave rather high values. The number of stolons, the number of suckers, fresh corm weight, and dry matter content were found to be the most heritable traits. Mass and family selection strategies were tested and revealed moderate to high genetic gain for most heritable traits in both generations. Selection indexes such as the vegetative growth index and future breeding strategies are discussed. Results could be of interest for breeding in other aroid crops.

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Section: Methodsmentioning

confidence: 99%

Evaluation of Vegetative Growth, Yield and Quality Related Traits in Taro (Colocasia esculenta [L.] Schott).

et al. 2016

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“…Mean values were used to nd the correlation among the traits. According to Bisognin et al (2012), tuber shape is related to average tuber weight. Similarly, Khayatnezhad et al (2011) discovered a highly signi cant correlation (r = 0.99) between average tuber weight and average tuber yield similar to our results like SFW and SDW (r = 0.98), ATY and ATW (r = 0.69), ATY and TNT (r = 0.72) showed a strong correlation (Fig.…”

Section: Analysis Of Phenotypic Traitsmentioning

confidence: 99%

SNP markers associated with some root, stolon, and tuber traits in tetraploid Potatoes (Solanum tuberosum L.) grown under diverse growing systems.

Yousaf,

Demirel,

Naeem

et al. 2023

Preprint

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Potato ranks 1st among non-cereal crops and grows around the globe. It has a lot of nutritious values like carbohydrates, minerals, calcium, and antioxidants that are necessary for the human diet. As the population grows quickly, it is imperative to breed the crop and create high-yielding varieties that meet the demand. Numerous loci, environmental factors, and their interactions all have an impact on the phenotypic diversity of numerous significant traits in plants. One approach put forth in recent years for genetic research and finding quantitative trait loci (QTLs) responsible for the specific trait is association mapping. The purpose of the study was to pinpoint the genetic underpins of significant underground traits. A panel of 192 diverse tetraploid potato genotypes from different countries were grown under different growing conditions (i.e., aeroponics and pot) to study root, stolon and tuber traits. Significant differences (P ≤ 0.01) were found between the genotypes for all examined traits, and the heritability of the traits ranged from (H2 = 0.74 to 0.94). Genotyping was carried out using the SolCAP 25K array. A GWASpoly R package was implemented for the marker-trait association, and 78 genomic regions were associated with the traits being investigated The identified SNPs have their putative gene functions of root and stolon architecture and tubers growth (i.e., WRKY transcription factor, MAPK, the GTP cyclohydrolase 1 (i.e., GTPCHI), Glutathionyl-hydroquinone reductase, and pyrophosphate—fructose 6-phosphate 1-phosphotransferase subunit alpha (PFPase). The history of potato breeding was reflected in LD patterns. The results of this study provide a framework that could be helpful for future potato breeding programs to increase production and reduce the challenges of feeding the world's population in the years to come.

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“…For potato, heritability in the broad sense is of greater importance, as the effects of dominance and epistasis are sustained in successive generations by clonal propagation (Howard, 1978). Selection of quality clones for industrial processing would be facilitated by information on the inheritance of the characters that compose it, and although several studies on heritability in both clone and family have been reported Salamoni et al (2000), heritability estimates are unique, depend on the genetic diversity of the material tested and are strongly influenced by growing conditions (Bisognin et al, 2012). In addition, the existence of genotype-environment interaction may reduce the industrial quality character selection response (Hayes and Thill, 2003), and selection of clones based on evaluation in different production environments is required, however, most heritability and selection response studies for industrial processing quality traits are directed to distinct growing conditions from Brazil (Hayes and Thill, 2003;Bisognin et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Research Article Genetic parameters of important characteristics for the development of potato cultivars designed for industrial processing

Silva¹,

Carvalho²,

Wolter³

et al. 2020

Genet. Mol. Res.

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©FUNPEC-RP www.funpecrp.com.br Genetics and Molecular Research 19 (4): gmr18597 T.A. da Silva et al. 2 texture (TEX) and glucose (GLUC); and moderate for secondary growth (GRO), shape (SHA), dry mass (DM), general appearance (APP), percentage of commercial tubers mass (PCM), curvature (CUR), size uniformity (SIU), shape uniformity (SHU)) and mean tuber mass (MTM). GLUC, SHA, TEX and APP showed superiority of the genotypic coefficient of variation (CVg) in relation to the residual coefficient of variation (CVe), for these characters. The highest CVg-CVe ratios were obtained for SIU, PCM, SHU, DM and GRO. In the light of this study, it is suggested that strong selection pressure can be applied to the characters GLUC, SHA, TEX and APP, and moderate selection pressure to SIU, PCM, SHU, DM, and GRO.

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Heritability and correlation among potato tuber traits

Abstract: -

Cited by 7 publications

References 11 publications

Evaluation of Vegetative Growth, Yield and Quality Related Traits in Taro (Colocasia esculenta [L.] Schott).

Evaluation of Vegetative Growth, Yield and Quality Related Traits in Taro (Colocasia esculenta [L.] Schott).

SNP markers associated with some root, stolon, and tuber traits in tetraploid Potatoes (Solanum tuberosum L.) grown under diverse growing systems.

Research Article Genetic parameters of important characteristics for the development of potato cultivars designed for industrial processing

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