Sulfur and Nitrogen Availability Interact to Affect the Flavor Biosynthetic Pathway in Onion

Coolong, Timothy; Randle, William M.

doi:10.21273/jashs.128.5.0776

Cited by 39 publications

(25 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Onions (Allium cepa L.) also vary by cultivar in response to soil fertility conditions. High sulfur fertility levels result in increased levels of sulfur compounds and greater flavor intensity (Coolong et al, 2004;Coolong and Randle, 2003;Huchette et al, 2007;Randle et al, 1995). In onion, mild flavors are produced when sulfur levels are sequentially reduced during bulb growth (Randle et al, 2002).…”

Section: Discussionmentioning

confidence: 99%

Phenotypic Characteristics of Ten Garlic Cultivars Grown at Different North American Locations

Volk¹,

Stern²

2009

horts

View full text Add to dashboard Cite

Garlic (Allium sativum L.) cultivars grown under diverse conditions have highly elastic environmental responses, particularly relating to skin color and yield. Ten diverse garlic cultivars were grown at 12 locations in the United States and Canada for 2 consecutive years to identify the environmentally responsive phenotypic traits of garlic. Clove arrangement, number of topsets, topset size, topset color, number of cloves, clove weight, clove skin color, and clove skin tightness were generally stable for each cultivar regardless of production location and conditions. Scape presence varied with cultivar and location, but for the most part, cultivars classified as hardneck types produced scapes and those classified as softnecks did not produce scapes. Bulbs grown at the northern Colorado, Minnesota, Pennsylvania, Vermont, and Washington locations were generally larger than the other locations. Soil potassium levels were positively correlated with bulb circumference and fresh weight. Soil sulfur and manganese levels were correlated with bulb sulfur and manganese content. Bulb wrapper color and intensity were highly dependent on location and cultivar. The Silverwhite cultivar was consistently white and ‘Ajo Rojo’, ‘German White’, ‘Inchelium’, ‘Sakura’, and ‘Spanish Roja’ were generally white with some faint violet or brown stripes or splotches across the locations. In contrast, cultivars Chesnok Red, Purple Glazer, Red Janice, and Siberian were more likely to have moderate or dark violet stripes, streaks, or splotches, particularly when grown at the northern Colorado, Minnesota, Nevada, New York, Ontario, Pennsylvania, or Washington locations. These results can help farmers identify niche regional markets that provide novel products to consumers. From these results, it was shown that garlic cultivars or classes grown under diverse conditions have highly elastic soil nutrient responses, particularly relating to skin color and yield.

show abstract

Section: Discussionmentioning

confidence: 99%

Phenotypic Characteristics of Ten Garlic Cultivars Grown at Different North American Locations

Volk¹,

Stern²

2009

horts

View full text Add to dashboard Cite

show abstract

“…Additionally, trans-S-1-propenyl-L-cysteine sulphoxide concentrations were significantly correlated with TPY levels (r = 0.78; Table III). During bulb maceration, nearly all the trans-S-1-propenyl-L-cysteine sulphoxide (≥ 95%) is hydrolysed and therefore contributes fully to onion flavour quality (Coolong and Randle, 2003a;Lancaster et al, 1998). In contrast, much of the S-methyl-L-cysteine sulphoxide and S-propyl-L-cysteine sulphoxide remain intact (40-60%) and do not fully contribute to onion flavour quality.…”

Section: Table II Effect Of Root Zone Temperatures (Rzt) On Mean (±Smentioning

confidence: 99%

“…Nitrogen (N) availability also influences S metabolism, flavour intensity, and the composition of flavour precursors in onion (Coolong and Randle, 2003a;Randle, 2000). Water regime (Freeman and Mossadeghi, 1973) and temperature are two further environmental factors which can affect the development and intensity of flavour (Coolong and Randle, 2003b;Platenius, 1941).…”

mentioning

confidence: 99%

The influence of root zone temperature on growth and flavour precursors inAllium cepaL.

Coolong

Randle

2006

The Journal of Horticultural Science and Biotechnology

View full text Add to dashboard Cite

“…Onion bulbs may have increased pungency when grown in soils with high S content. Onion pungency, however, is not consistently influenced by S nutrition (Coolong and Randle, 2003;Hamilton et al, 1998;Lee et al, 2009;Randle and Bussard, 1993). Thus, the relationships of sweet onion yield and quality as a function of K and S concentrations are not fully understood.…”

mentioning

confidence: 99%

Sweet Onion (Allium cepa) Plant Growth and Bulb Yield and Quality as Affected by Potassium and Sulfur Fertilization Rates

Dı́az-Pérez¹,

Bautista²,

Bateman³

et al. 2016

horts

View full text Add to dashboard Cite

‘Vidalia’ onions are sweet, short day, low pungency, yellow Granex-type bulbs that are popular in the United States. The relationships of sweet onion bulb yield and quality with potassium (K) and sulfur (S) concentrations are not fully understood. The objective of this study was to evaluate the effects of K and S fertilization rates on sweet onion plant growth and bulb yield and quality. Experiments were conducted at the Horticulture Farm, Tifton Campus, University of Georgia, in the Winters of 2012–13 and 2013–14. The experiment had five treatments (K/S rates: 56/80, 112/126, 168/172, 224/218, and 280/264 kg·ha−1 of K and S, respectively). K/S rates had no effect on onion biomass of roots, bulbs, and shoots during the growing season. Marketable and total number and weight of onion bulbs and individual bulb weight were also unaffected by K/S rate. Incidences of bolting, double bulbs, Botrytis leaf blight (Botrytis cinerea), and sour skin (Burkholderia cepacia), and bulb dry weight, soluble solids content (SSC), and pungency (pyruvate concentration) were unaffected by K/S rates. In conclusion, K/S rates had little effect on plant growth and bulb yield and quality. The lack of response of onion plants to K/S rates, even at the lowest rate suggests that some of the K absorbed by plants originated from K already present in the soil before planting. The average K content of sweet onion whole plants was 80 kg·ha−1 K. Thus, under our experimental conditions, application of K rates above the recommended value (84 kg·ha−1 K) are unnecessary and will likely not improve plant growth, yield, or quality. Regarding S, rates higher than 80 kg·ha−1 S are probably unnecessary and will not enhance either plant growth or bulb yield or quality of sweet onion.

show abstract

Sulfur and Nitrogen Availability Interact to Affect the Flavor Biosynthetic Pathway in Onion

Cited by 39 publications

References 32 publications

Phenotypic Characteristics of Ten Garlic Cultivars Grown at Different North American Locations

Phenotypic Characteristics of Ten Garlic Cultivars Grown at Different North American Locations

The influence of root zone temperature on growth and flavour precursors inAllium cepaL.

Sweet Onion (Allium cepa) Plant Growth and Bulb Yield and Quality as Affected by Potassium and Sulfur Fertilization Rates

Contact Info

Product

Resources

About