water to the upper parts of the shoots, which accelerates a reduction in the moisture content of the shoot. In this article, we studied whether a prototypic method called “basal wire coiling” could increase the sugar concentration in tomato fruit juice
, developmental differences can affect sugar concentrations and relative amounts of individual sugars found in vegetables and specific vegetable tissues ( Hounsome et al., 2008 ; Lee et al., 1970 ). Regardless of the tissue type, sugar concentrations are cultivar
Abstract
In the paper, Measurement and Variation of Sugar Concentration of Pickling Cucumbers by J. D. McCreight, R. L. Lower, and D. M. Pharr (J. Amer. Soc. Hort. Sci. 103(2):145-147. 1978), the first sentence of the introduction should read “Bloating of commercially brined cucumbers results in a 5 million dollar loss each year to the U.S. pickle industry (6).”
Abstract
Aqueous extracts of thawed, transverse slices of cucumber fruit (Cucumis sativus L.) gave reliable measurements of reducing sugar and total carbohydrate concentrations. Fruit fresh weight increased throughout a 20-day sampling period, averaging 0.6, 13.4, and 389 g at anthesis, 5, and 20 days after anthesis, respectively. Reducing sugar and total carbohydrate concentrations were highly correlated (r=.97), but were not correlated with fruit fresh weight (r=.40) or commercial fruit size (r=.52). Reducing sugar concentration at anthesis averaged 6.3 mg/g fresh weight and increased to a plateau averaging 22.7 mg/g from 5 to 20 days after anthesis. Reducing sugar concentration of 585 plant introductions and cultivars ranged from 7.1 to 52.8 mg/g and averaged 31.1 and 22.6 mg/g at 2 harvest dates.
Six onion (Allium cepa L.) cultivars were grown during 2 years to evaluate the effects of environment on bulb quality as measured by sugar and pyruvate (pungency) concentrations. Within each year, bulb fresh weight was not affected by cultivar; however, bulb fresh weights were 36% higher in a year when most of the rain fell during maximum bulb expansion. Total bulb sugar concentration and pungency varied among cultivars and years. Pungency was higher and the sugar: pungency ratio was lower in `Texas 1015Y' and `Sweet Georgia' than in `Dessex', `Rio Bravo', 'Hybrid Yellow Granex', and `Granex 33'. Under low S nutrition, market acceptance of “sweet” onion cultivars that vary slightly in nonstructural water-soluble carbohydrates may be assessed more precisely by the sugar: pungency ratio than by sugar or pungency assessments.
Muskmelon (Cucumis melo L.) genotypes, Birdsnest 1 [`Qalya' (BN1)], Birdsnest 2 (BN2), and `Mission' (V) were used to determine the effects of differing plant architecture and spacing on fruit sugar concentration and yield. The BN1 and BN2 genotypes possessed a highly branched growth habit specific to birdsnest melon types, but not characteristic of standard indeterminate vining types (e.g., `Mission'). Experiments were conducted at both the Hancock and Arlington Experimental Farms in Wisconsin, where plant response to two within-row spacings [35 cm (72,600 plants/ha) and 70 cm (36,300 plants/ha)] in rows on 210-cm centers was examined. Genotypes were grown in a randomized complete-block design with four replications at each location and evaluated for primary lateral branch number, fruit number per plant and per hectare, average fruit weight, yield per plant (g), yield per hectare (t), and fruit sugar concentration. Yield, fruit number, and sugar concentration were higher for all genotypes at Arlington than at Hancock. The main effect of genotype was significant for all traits examined. Genotypes BN1 and V had higher mean fruit weight, yield per plant and per hectare, and fruit quality (fruit sugar concentration) than did BN2. Spacing affected all traits, except primary branch number and fruit sugar concentration. Fruit number and yield per plant and average fruit weight were higher with wider spacing, but yield (t·ha-1) and fruit number per hectare were lower.
Abstract
2,3 Dihydro-5,6 diphenyl-1,4 oxathiin (UNI-P293) had no effect upon the sugar concentration in roots of carrot (Daucus carota L.) and beet (Beta vulgaris L.). No visual injury to plants or reductions in yield were noted.
Abstract
Narrow sense heritabilities (h2) for reducing sugar concentration of pickling cucumbers (Cucumis sativus L.) were estimated for a population of half-sib families from 501 plant introductions and cultivars. Reducing sugar concentration averaged 22.3 mg/g fresh weight, and ranged from 10.4 to 51.9 mg/g. Half-sib family heritability of reducing sugar concentration was 0.30, and after correction for estimated genotype × environment interaction was 0.051. Parent-offspring heritability was 0.042. Expected gains per cycle of half-sib progeny testing and half-sib testing, corrected for genotype × environment interaction bias, were 0.42 and 0.21 mg reducing sugar/g, respectively. Expected gain per cycle of mass selection was 0.38 mg/g.
, increased fruit tissue firmness, and elevated soluble sugar concentrations in apple ( Malus × domestica ) fruit tissue ( Nava et al., 2008 ). However, contrasting results have been indicated in previous research. For instance, Fallovo et al. (2009a
Abstract
Total sugar concentrations in leaves increased from 22 mg/g fresh weight to 50 mg/g fresh weight on day 8 in boxwood and from 44 mg/g fresh weight to 77 mg/g fresh weight on day 6 in cranberry leaves after being exposed to temperature treatment of 7°C with 8 hour light. Similarly, reducing sugar concentrations increased from 6.5 mg/g fresh weight prior to treatment to 10.5 mg/g fresh weight on day 8 in boxwood and from 22 to 33 mg/g fresh weight in cranberry.