Post-harvest decay of second growth-induced glassy tubers of potato (Solanum tuberosum L.) cv. Bintje in relation to their specific gravity

1995 ◽  
Vol 38 (4) ◽  
pp. 391-397 ◽  
Author(s):  
A. Veerman ◽  
C. D. Van Loon
Keyword(s):  
Solanum Tuberosum ◽  
Specific Gravity ◽  
Solanum Tuberosum L ◽  
Post Harvest ◽  
Second Growth

THE EFFECT OF SEEDPIECE POPULATION AND HARVEST DATE ON YIELD AND ECONOMIC VALUE OF CARLTON POTATOES IN MANITOBA

1989 ◽  
Vol 69 (3) ◽  
pp. 1019-1025
Author(s):  
B. L. REX ◽  
W. A. RUSSELL ◽  
H. R. WOLFE
Keyword(s):  
Solanum Tuberosum ◽  
Specific Gravity ◽  
Positive Relationship ◽  
Solanum Tuberosum L ◽  
Economic Value ◽  
Hollow Heart ◽  
Growing Seasons ◽  
Rainfed Conditions ◽  
Tuber Specific Gravity ◽  
Final Harvest

The effect of seedpiece population on Carlton potatoes for the early tablestock market was evaluated under rainfed conditions in southern Manitoba over the 1982, 1983 and 1985 growing seasons. Populations of 21.7, 26.3, 33.3, and 45.5 thousand seedpieces per hectare were harvested 75, 85 and 95 d after planting each year. Total and marketable tuber yields increased with population. Tuber specific gravity increased with population in 1982 and in the first two harvests in 1983, but no trends were observed in 1985 and in the final harvest in 1983. The incidence of hollow heart in marketable tubers was very low in all 3 yr, and was not related to seedpiece population or date of harvest. Net crop value (NCV) usually increased with successive harvests within each year, and generally showed a positive relationship with seedpiece population.Key words: Potato, Solanum tuberosum L., Carlton, seedpiece population, hollow heart, specific gravity

ESTIMATION OF GENERAL AND SPECIFIC COMBINING ABILITIES IN POTATO

1976 ◽  
Vol 18 (3) ◽  
pp. 463-470 ◽  
Author(s):  
G.C.C. Tai
Keyword(s):  
Solanum Tuberosum ◽  
Specific Gravity ◽  
Combining Ability ◽  
Solanum Tuberosum L ◽  
High Yield ◽  
Average Weight ◽  
Stabilizing Selection ◽  
Low Frequencies ◽  
Significant Difference ◽  
Selection For

Seven quantitative traits of the cultivated potato (Solanum tuberosum L.) were studied in a partial diallel cross experiment. Large specific combining ability effects were observed for total and marketable yields, total number of tubers, and number of marketable tubers. Large general combining ability effects were obtained for average weight per tuber, average weight per marketable tuber, and specific gravity. The SCA effect for specific gravity was also significant. It is suggested that the difference of combining ability performance noted above for the two yield components was due to a long history of directional selection for high yield and stabilizing selection for tubers within the marketable size range. There were low frequencies of both GCA and SCA effects showing significant difference from the population mean. This is interpreted as an affirmation of the narrow genetic base which exists in the present gene pool in Solanum tuberosum. Heritability estimates based on GCA effects indicated that parents can be efficiently selected for average tuber weight and specific gravity.

EFFECTS OF APPLIED NITROGEN ON YIELDS, TUBER SIZES, AND SPECIFIC GRAVITIES OF TWO POTATO CULTIVARS

1977 ◽  
Vol 57 (3) ◽  
pp. 803-810 ◽  
Author(s):  
D. C. MUNRO ◽  
R. P. WHITE ◽  
J. B. SANDERSON
Keyword(s):  
Solanum Tuberosum ◽  
Specific Gravity ◽  
Prince Edward Island ◽  
Solanum Tuberosum L ◽  
Potato Cultivars ◽  
N Application ◽  
Significant Yield ◽  
Yield Responses ◽  
Tuber Specific Gravity ◽  
Applied Nitrogen

Potatoes (Solanum tuberosum L. cv. Sebago and Netted Gem) were grown at several locations on Prince Edward Island over a 5-yr period with rates of applied N from zero to 336 kg/ha. Significant yield responses to applied N occurred at all locations each year with each cultivar. At most locations, 112–134 kg N/ha was adequate for maximum yields. The response of the two cultivars to applied N was similar. Applied N up to 134 kg/ha increased the percentage yields of A-size tubers. Tuber specific gravity was affected by N application at only 8 of the 15 locations. Generally, excessive rates of applied N reduced specific gravity but rates sufficient for maximum yields were not deterimental.

Changes in Starch, Sugar, and Abscisic Acid Contents Associated with Second Growth in Tubers of Potato (Solanum tuberosum L.) One-leaf Cuttings

1991 ◽  
Vol 139 (1) ◽  
pp. 86-89 ◽  
Author(s):  
J.H. van Den Berd ◽  
D. Vreugdenhil ◽  
P.M. Ludford ◽  
L.L. Hillman ◽  
E.E. Ewing
Keyword(s):  
Abscisic Acid ◽  
Solanum Tuberosum ◽  
Solanum Tuberosum L ◽  
Second Growth

Mapping dry matter and sugars in potato tubers for prediction of whole tuber process quality

1997 ◽  
Vol 77 (3) ◽  
pp. 461-467 ◽  
Author(s):  
M. K. Pritchard ◽  
M. G. Scanlon
Keyword(s):  
Solanum Tuberosum ◽  
Specific Gravity ◽  
Dry Matter ◽  
Solanum Tuberosum L ◽  
Sucrose Concentration ◽  
Longitudinal Axis ◽  
Quality Parameters ◽  
Russet Burbank ◽  
Tuber Quality ◽  
The Difference

Processing quality parameters within different sections of potato (Solanum tuberosum L.) tubers grown in Manitoba were measured to determine variability within tubers and to determine if whole tuber quality could be predicted from a specific section. The section that provided the best prediction of overall tuber quality parameters was determined. Changes in specific gravity (SG) and sugars in the outside and the inside of tubers during several months of storage were also measured. Dry matter (DM) of potato cvs. Russet Burbank and Shepody was generally higher at the apical and stem ends than in the middle section and was significantly higher in the outside than in the inside of the tuber. Sucrose concentration generally decreased from the stem end to the apical end of the tuber in Russet Burbank but increased from the stem end to the apical end in Shepody. Sucrose, glucose, and fructose were generally greater, though not always significantly, in the inside of the tuber compared with the outside with the exception of sucrose in Shepody where it was somewhat higher in the outside section. Glucose and fructose generally decreased from stem end to apical end although the difference between the two ends was significant only in Shepody. There was more variability in DM and the three sugars within Shepody tubers than those of Russet Burbank. The outer section of the tuber at the centre of the longitudinal axis (CO) was, overall, most highly correlated to the DM (r2 > 0.91) of the entire tuber for both cultivars and would be the most appropriate single location for estimating the DM of the entire tuber. Sugar concentrations of whole tubers could not consistently be estimated from that of any particular tuber location although the CO section had the highest correlations overall. During 6 mo storage SG did not change while sucrose decreased and glucose and fructose generally increased in both the outside (CO) and inside (CI) of the tuber. Linear regressions relating DM, SG, and sugars of the CO section to the whole tuber, and relating DM to SG were developed. Key words: Solanum tuberosum L., specific gravity, storage, processing, product quality

scholarly journals Effect of Plant Density on the Water Use Efficiency and Quality of Potato (Solanum tuberosum L. Cv. Spunta) in the Jordan Valley

2018 ◽  
Vol 10 (12) ◽  
pp. 203
Author(s):  
Nabeel Mohammad Bani-Hani ◽  
Jalal “Ahmed Said” Al-Tabbal ◽  
Moawiya Ahmad Haddad ◽  
Hammad Khalifeh Aldal’in ◽  
Ahmad H. Al-Fraihat ◽  
...  
Keyword(s):  
Solanum Tuberosum ◽  
Specific Gravity ◽  
Water Use Efficiency ◽  
Water Use ◽  
Plant Density ◽  
Solanum Tuberosum L ◽  
Tuber Weight ◽  
Jordan Valley ◽  
Use Efficiency

Plant density affected yield, quality and water use efficiency. Little information describing plant density to optimize yield and quality of potato production is available in the Jordan Valley. This study was aimed to investigate the effects of plant density on the yield and yield components of the potato (Solanum tuberosum L.) cultivar “Spunta” grown in the middle of the Jordan Valley. Five different densities of plants (41,600 plants ha-1 (D1), 56,000 plants ha-1 (D2), 83,200 plants ha-1 (D3), 28,000 plants ha-1 (D4), and 41,600 plants ha-1 (D5) were randomly distributed over five replicate sites during the growing season from November 2013 to March 2014. Plant height, number of branches, fresh and dry weight of potato plants, tuber number, tuber weight, total yield, specific gravity and water use efficiency of potato plant grown under different plant density were measured. It was found that the productivity of potato increased with increasing plant density, with the highest total, marketable, and non-marketable yields being obtained at densities of 83,200 seeds ha-1, and the lowest occurring at 41,600 seeds ha-1, which equated to total fresh yields of 45.1 and 25.3 tons ha-1, respectively. The highest water use efficiency for marketable yield (11.9 kg m-3) was obtained at a density of 83,200 seeds ha-1, whereas the lowest water use efficiency (7.5 kg m-3) was obtained at a density of 41,600 seeds ha-1. The specific gravity ranged from 1.04 to 1.08 and the average tuber weight ranged from 77.02 g at a density of 83,200 seeds ha-1 to 115.84 g at a density of 28,000 seeds ha-1.

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