ArticlePloS one2020
Quantitative phenotyping of shell suture strength in walnut (Juglans regia L.) enhances precision for detection of QTL and genome-wide association mapping.
Article in PloS one, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed.
- Exploring Deep Learning Approaches for Walnut Phenotype Variety Classification.International journal of food science · 2025Article
- Complete mitochondrial genome assembly of Juglans regia unveiled its molecular characteristics, genome evolution, and phylogenetic implications.BMC genomics · 2024Article
- A multiplexed plant-animal SNP array for selective breeding and species conservation applications.G3 (Bethesda, Md.) · 2023Article
- Genome-wide characterization and development of SSR markers for genetic diversity analysis in northwestern Himalayas Walnut (3 Biotech · 2023Article
- Genome-wide association analysis of 101 accessions dissects the genetic basis of shell thickness for genetic improvement in Persian walnut (Juglans regia L.).BMC plant biology · 2022Article
- Disentangling the genetic basis of rhizosphere microbiome assembly in tomato.Nature communications · 2022Article
- Genome-wide association analysis and pathway enrichment provide insights into the genetic basis of photosynthetic responses to drought stress in Persian walnut.Horticulture research · 2022Article
- The role of JrLACs in the lignification of walnut endocarp.BMC plant biology · 2021Article
- A genome variation map provides insights into the genetics of walnut adaptation and agronomic traits.Genome biology · 2021Article
- Genetic Analysis of Walnut (G3 (Bethesda, Md.) · 2020Article
- Genome-Wide Association Study Reveals Candidate Genes Involved in Fruit Trait Variation in Persian Walnut (Frontiers in plant science · 2020Article
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8 authors.
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Abstract
Walnut shell suture strength directly impacts the ability to maintain shell integrity during harvest and processing, susceptibility to insect damage and other contamination, and the proportion of kernel halves recovered during cracking. Suture strength is therefore an important breeding objective. Here, two methods of phenotyping this trait were investigated: 1) traditional, qualitative and rather subjective scoring on an interval scale by human observers, and; 2) quantitative and continuous measurements captured by a texturometer. The aim of this work was to increase the accuracy of suture strength phenotyping and to then apply two mapping approaches, quantitative trait loci (QTL) mapping and genome wide association (GWAS) models, in order to dissect the genetic basis of the walnut suture trait. Using data collected on trees within the UC Davis Walnut Improvement Program (n = 464), the genetic correlation between the texturometer method and qualitatively scored method was high (0.826). Narrow sense heritability calculated using quantitative measurements was 0.82. A major QTL for suture strength was detected on LG05, explaining 34% of the phenotypic variation; additionally, two minor QTLs were identified on LG01 and LG11. All three QTLs were confirmed with GWAS on corresponding chromosomes. The findings reported in this study are relevant for application towards a molecular breeding program in walnut.
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