Relationships between bulb dry matter content, soluble solids concentration and non‐structural carbohydrate composition in the onion (<i>Allium cepa</i>)

Sinclair, Philip; Blakeney, A. B.; Barlow, E. W. R.

doi:10.1002/jsfa.2740690210

Cited by 50 publications

(62 citation statements)

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“…Signi®cant positive genetic and phenotypic correlations were found among SSC, DM%, pungency, and OIAA (Table 3) and agreed with previously reported phenotypic correlations (Mann and Hoyle 1945;Nieuwhof et al 1973;Sinclair et al 1995a;Goldman et al 1996;Debaene et al 1999). Our results provide genetic evidence that high-solids onions have higher pungency and OIAA, as compared to low-solids onions.…”

Section: Discussionsupporting

confidence: 93%

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Genetic analyses of correlated solids, flavor, and health-enhancing traits in onion (Allium cepa L.)

Galmarini¹,

Goldman

Havey

2001

Mol Gen Genomics

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Onion possesses organosulfur compounds and carbohydrates that provide unique flavor and health-enhancing characteristics. Significant phenotypic correlations have been reported among soluble solids content (SSC), total dry matter, pungency, and onion-induced in vitro antiplatelet activity. A genetic map and segregating F3M families derived from a cross between two inbred populations were used to identify and estimate the effects of quantitative trait loci (QTLs) controlling these traits at 30 and 90 days postharvest. In vitro antiplatelet activities among different onion populations were consistent across six human blood donors. Most of the populations showed in vitro antiplatelet activities; however, for some donors, one of the parental lines and two F3M families had pro-aggregatory effects under our experimental conditions. SSC, dry matter, pungency, and in vitro antiplatelet activity showed significant positive phenotypic and genetic correlations. A chromosome region on linkage group E accounted for a significant amount of the phenotypic variation for all of these traits. The correlations among these traits may be due to linkage or pleiotropy of genes controlling solids content. Our results indicate that it will be difficult to develop onion populations with lower pungency and high in vitro antiplatelet activity; however, the strong genetic and phenotypic correlations between high in vitro antiplatelet activity and high SSC are beneficial for the health functionality of onion.

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Section: Discussionsupporting

confidence: 93%

“…SSC is highly correlated with dry-matter content (Mann and Hoyle 1945;Nieuwhof et al 1973;Sinclair et al 1995a). McCollum (1968) reported a negative genetic correlation between SSC and bulb size.…”

Section: Introductionmentioning

confidence: 96%

Genetic analyses of correlated solids, flavor, and health-enhancing traits in onion (Allium cepa L.)

Galmarini¹,

Goldman

Havey

2001

Mol Gen Genomics

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“…Dry matter and soluble solids contents were the second pair of significantly correlated traits (0.83), in agreement with previous reports (Mann and Hoyle 1945, Nieuwhof et al 1973, Sinclair et al 1995, Galmarini et al 2001. This positive correlation makes the use of indirect selection by soluble solids content possible; soluble solids content is easier and cheaper to measure than dry matter content for large scale plant material.…”

Section: Estimates Of Heritability and Correlationssupporting

confidence: 92%

Variability, heritability, and correlations of agronomic traits in an onion landrace and derived S1 lines

Porta

Rivas

Gutiérrez

et al. 2014

Crop Breed. Appl. Biotechnol.

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“…DMC determine, in part, the end use, storage life, pungency and firmness (Sinclair et al, 1995). DMC exhibits wide genetic variation, from around 6% in sweet onions up to over 25% in dehydration varieties (Jones and Mann, 1963).…”

Section: Soluble Solids Content (Ssc)mentioning

confidence: 99%

Characterization of genetic resources of onion (Allium cepa L.) from the Spanish secondary centre of diversity

Mallor

Carravedo

Estopañán

et al. 1970

Span. j. agric. res.

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Onions are the second most-valuable vegetable in the world. Despite its global culinary and economic significance, the knowledge of genetic diversity and resources is limited. The aim of this study was to morphologically and physico-chemically characterize eighty-six onion landraces from Spain, part of the secondary Mediterranean Centre of diversity. The evaluated traits in the bulb included: weight, shape, firmness, soluble solids content (SSC), pungency and sugars content (glucose, fructose and sucrose). The results evidenced a great variability in all the evaluated traits. Correlations were significant between pungency and SSC (r = 0.34), firmness (r = 0.32), and sucrose content (r = 0.34); between fructose and glucose contents (r = 0.79); between sucrose content and SSC (r = 0.57); between SSC and weight (r = -0.35); between fructose and sucrose contents (r = -0.22); and between weight and sucrose content (r = -0.43). The combination of cluster and discriminant analyses resulted in a classification into four clusters (95.3% fit). Cluster 1 is represented by firm, pungent and large-sized bulbs; cluster 2 consists of large-sized, mild and sweet onions; cluster 3 is constituted by pungent, high-SSC and small-sized bulbs and cluster 4 is made up by elongated bulbs. The variability in important agronomical traits found point out that these onion accessions could be candidates for future breeding programs. In addition, the clustering could make the initial plant material selection easier and the correlations among the evaluated traits found could help to establish adequate selection strategies.Additional key words: cluster analysis; firmness; genetic diversity; pungency; soluble solids; sugars. Resumen Caracterización de los recursos genéticos de cebolla (Allium cepa L.) procedentes del centro secundario de diversificación de EspañaLa cebolla es el segundo cultivo hortícola a nivel mundial. Sin embargo, el conocimiento sobre los recursos y la diversidad genética de esta especie es limitado. Por ello, el objetivo del presente trabajo consistió en el estudio morfológico y físico-químico de una colección de 86 cultivares de cebolla procedentes de España (que forma parte del centro secundario de diversificación). Los caracteres evaluados en el bulbo incluyeron: peso, forma, firmeza, contenido en sólidos solubles (SSC), pungencia y contenido en azúcares (glucosa, fructosa y sacarosa). Los resultados evidenciaron una gran variabilidad en todos los caracteres evaluados. Las correlaciones fueron significativas entre la pungencia y SSC (r = 0,34), firmeza (r = 0,32) y contenido en sacarosa (r = 0,34); entre contenido en fructosa y glucosa (r = 0,79); entre contenido en sacarosa y SSC (r = 0,57); entre SSC y peso (r = -0,35); entre contenido en fructosa y sacarosa (r = -0,22) y entre el peso y contenido en sacarosa (r = -0,43). El análisis discriminante dio lugar a la formación de cuatro grupos con un ajuste del 95,3%. El grupo 1 está formado por bulbos grandes, firmes y picantes, el grupo 2 por cebollas grandes, su...

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Relationships between bulb dry matter content, soluble solids concentration and non‐structural carbohydrate composition in the onion (Allium cepa)

Cited by 50 publications

References 13 publications

Genetic analyses of correlated solids, flavor, and health-enhancing traits in onion (Allium cepa L.)

Genetic analyses of correlated solids, flavor, and health-enhancing traits in onion (Allium cepa L.)

Variability, heritability, and correlations of agronomic traits in an onion landrace and derived S1 lines

Characterization of genetic resources of onion (Allium cepa L.) from the Spanish secondary centre of diversity

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