Effect of three viruses on yield, specific gravity, and chip color of potatoes in Maine

1966 ◽  
Vol 43 (11) ◽  
pp. 393-396 ◽  
Author(s):  
H. J. Murphy ◽  
M. J. Goven ◽  
D. C. Merriam
Keyword(s):  
Specific Gravity ◽  
Chip Color

scholarly journals Selection and Evaluation of 21 Potato (Solanum Tuberosum) Breeding Clones for Cold Chip Processing

Foods ◽  
2019 ◽  
Vol 8 (3) ◽  
pp. 98 ◽  
Author(s):  
Benjamin Wayumba ◽  
Hyung Choi ◽  
Lim Seok
Keyword(s):  
Specific Gravity ◽  
Dry Matter ◽  
Reducing Sugars ◽  
Chip Color ◽  
Reducing Sugar ◽  
Snack Food ◽  
Dry Matter Content ◽  
High Dry Matter ◽  
Chip Processing ◽  
Sugar Levels

Quality evaluations in potatoes are of necessity to meet the strict demands of the chip processing industry. Important parameters assessed include specific gravity, dry matter content, chip color, reducing sugars, and glycoalkaloids. This study was designed with the purpose of identifying specialized potato clones with acceptable qualities for processing chips, in comparison with two selected control varieties, Dubaek and Superior. As a result, high dry matter and specific gravity were observed for three potato clones, and the quantified ά-solanine levels ranged from 0.15 to 15.54 mg·100 g−1 fresh weight (FW). Significant variations (p < 0.05) in reducing sugar levels were observed in clones stored at different temperature conditions. After reconditioning of the tubers at 22 °C for 21 days, a significant drop in reducing sugar levels was recorded. In addition, fried chips for each potato clone were evaluated, and the color measured on the basis of the Snack Food Association (SFA) chip color score standard. Reconditioned tubers exhibited much lighter and better chip color compared to their counterparts cold-stored at 4 °C. This study observed that for quality processing of potato chips, clones with combined traits of high dry matter, low levels of glycoalkaloids and reducing sugars, and acceptable chip color should be used as raw materials.

Genetic components of potato chip quality evaluated in three environments and under various storage regimes

1992 ◽  
Vol 72 (2) ◽  
pp. 535-543 ◽  
Author(s):  
D. R. Lynch ◽  
G. C. C. Tai ◽  
R. H. Coffin
Keyword(s):  
Specific Gravity ◽  
Combining Ability ◽  
Principal Component ◽  
Chip Color ◽  
Narrow Sense Heritability ◽  
Genetic Components ◽  
New Information ◽  
Total Variability ◽  
Highly Correlated ◽  
Chipping Quality

A diallel series of crosses was made between parents with good processing quality and nonprocessing but well-adapted varieties and breeding clones to study the inheritance of chipping quality and tuber yield in potatoes. The progeny of the crosses were assessed in three widely differing growing environments and chipped from a range of storage environments. Principal component analysis for chip color indicated that the first (PCA1) and second (PCA2) principal components accounted for 84.4 and 5.0% of the total variability, respectively. PCA1 scores were highly correlated (P < 0.01) with the mean chip color scores of the 20 crosses measured over the 11 environments, whereas PCA2 scores were highly correlated (P < 0.01) with the standard deviations of the chip scores over storage environments. These results provide new information that supports the recently proposed concept of two genetically independent systems determining chip color, i.e., "overall chipping quality" and "chipping stability". Highly significant (P < 0.01) general combining-ability and nonsignificant specific combining-ability effects suggest additive genetic factors and high narrow-sense heritability for specific gravity. Combining-ability effects for yield traits were generally nonsignificant, which probably reflects the selection of parents with proven breeding value.Key words: Solanum tuberosum, stability, yield, specific gravity

The effect of in-row seed piece spacing and harvest date of the tuber yield and processing quality of Conestoga potatoes in southern Manitoba

1991 ◽  
Vol 71 (1) ◽  
pp. 289-296 ◽  
Author(s):  
Brian L. Rex
Keyword(s):  
Specific Gravity ◽  
Seed Piece ◽  
Tuber Yield ◽  
Hollow Heart ◽  
Chip Color ◽  
Harvest Date ◽  
Processing Quality ◽  
Marketable Yield ◽  
Chip Processing ◽  
Large Tuber

Conestoga was registered in Canada in 1982. It has been readily accepted by chip producers and processors in Manitoba, although little information on the effect of commercial production practices on the yield and processing quality under Manitoba conditions is available. In this study, the effect of within-row seed piece spacing at three harvest dates on Conestoga potatoes for the early-season chip processing market was evaluated under rainfed conditions in southern Manitoba in 1982, 1983 and 1986. Treatments consisted of spacings of 22, 30, 38 and 46 cm between seed pieces within the row, with 1 m between row centers, harvested at 10-d intervals starting at 75 ± 5 d after planting (DAP) each year. As spacing between seed pieces increased, total, small and maingrade tuber yield and number, and specific gravity decreased. Large tuber yield and number increased. The number of mainstems per plant, the incidence of hollow heart and chip color were unaffected. Delaying harvest resulted in an increased yield of total and maingrade tubers, and higher specific gravity. The highest marketable yield (maingrade plus large tubers) resulted from the 22-cm in-row spacing. The total number of tubers harvested and the number of maingrade tubers increased between 75 and 85 DAP, but did not increase substantially after 85 DAP. Chip color and the incidence of hollow heart were not significantly affected by harvest date. Key words: Potato, population, spacing, harvest date, hollow heart, chip color

The effect of scion and stock autografting and heterografting on specific gravity, sugar content and chip color of potatoes

1988 ◽  
Vol 65 (3) ◽  
pp. 141-145
Author(s):  
George C. C. Tai ◽  
Robert H. Coffin ◽  
Rickey Y. Yada
Keyword(s):  
Specific Gravity ◽  
Sugar Content ◽  
Chip Color

scholarly journals Effect of potassium sources on potato tuber yield and chip quality

2018 ◽  
Vol 36 (3) ◽  
pp. 395-398 ◽  
Author(s):  
Giovani O Silva ◽  
Antonio C Bortoletto ◽  
Agnaldo DF Carvalho ◽  
Arione S Pereira
Keyword(s):  
Specific Gravity ◽  
Potassium Chloride ◽  
Tuber Yield ◽  
Soil Analysis ◽  
Chip Color ◽  
Potassium Sulfate ◽  
Tuber Quality ◽  
Chip Quality ◽  
Potassium Sources ◽  
Red Latosol

ABSTRACT Many potato producers for fry industry changed from the use of potassium chloride to potassium sulfate, as there is a concept that the use of this source improves tuber quality. The aim of this work was to evaluate the effect of these two potassium sources on yield, specific gravity and chip color of potato chipping cultivars. The experiment was carried out on a Dystrophic Red Latosol, in Canoinhas, Brazil, in spring season 2016. Treatments consisted of two potato cultivars, BRSIPR Bel and Atlantic, and two sources of potassium, chloride and sulfate, applied in the furrow at the planting time, in rates based on soil analysis. Experimental design was a randomized complete block in a split-plot arrangement with four replications. Main plots were cultivars and subplots potassium sources. 100 days after planting each sub-plot was evaluated for yield, specific gravity and chip color. There was no significant effect of potassium source on yield components, specific gravity and chip color of BRSIPR Bel and Atlantic.

Effect of specific gravity, storage, and conditioning on potato chip color

1961 ◽  
Vol 38 (2) ◽  
pp. 51-57 ◽  
Author(s):  
Shirley Lyman ◽  
Andrea Mackey
Keyword(s):  
Specific Gravity ◽  
Potato Chip ◽  
Chip Color
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