Cracking and fracture properties of potato ( Solanum tuberosum L.) tubers and their relation to dry matter, starch, and mineral distribution

2019 ◽  
Vol 99 (6) ◽  
pp. 3149-3156 ◽  
Author(s):  
Mirjam Koch ◽  
Marcel Naumann ◽  
Elke Pawelzik
Keyword(s):  
Solanum Tuberosum ◽  
Dry Matter ◽  
Solanum Tuberosum L ◽  
Mineral Distribution ◽  
Fracture Properties

Effects of leaf age, leaf area, and other factors on tuberization of cuttings from induced potato (Solanum tuberosum) shoots

1983 ◽  
Vol 61 (12) ◽  
pp. 3193-3201 ◽  
Author(s):  
Brian A. Kahn ◽  
Elmer E. Ewing ◽  
Anne H. Senesac
Keyword(s):  
Solanum Tuberosum ◽  
Leaf Area ◽  
Shoot Apex ◽  
Dry Matter ◽  
Solanum Tuberosum L ◽  
Leaf Age ◽  
Continuous Light ◽  
Large Area ◽  
Potato Plants ◽  
Bud Growth

Potato plants (Solanum tuberosum L. cultivars 'Belchip,' 'Chippewa,' 'Katahdin,' and 'Norchip') were grown in a glasshouse under continuous light. Thereafter, various photoperiodic treatments were given to these plants and cuttings were taken from the shoots. Different excision treatments were applied to the cuttings, which were then placed in a mist bench under continuous light and examined for tuberization after 12 days. Young, fully expanded leaves were most effective in supporting tuberization of cuttings from induced plants; but even very young or very old leaves increased tuberization. In proportion to growth at aerial buds, there was often more tuberization from a small leaf area consisting of young, expanding and fully expanded leaves than from a large area of older, more senescent leaves. The shoot apex also contributed to tuberization of induced cuttings. Induction to tuberize led to a shift from aerial bud growth to underground bud growth. For a given leaf age, partitioning of dry matter to underground buds rather than to aerial buds was decreased by reducing the leaf area and increased by increasing the level of induction.

scholarly journals Rendimiento de cultivares de papa (Solanum tuberosum L.) amarillos precoces del grupo Phureja

2018 ◽  
Vol 29 (3) ◽  
pp. 639
Author(s):  
Juan F. Seminario-Cunya ◽  
Roiser Villanueva-Guevara ◽  
Misael H. Valdez-Yopla
Keyword(s):  
Solanum Tuberosum ◽  
Plant Height ◽  
Harvest Index ◽  
Dry Matter ◽  
Solanum Tuberosum L ◽  
Block Design ◽  
Randomized Block Design ◽  
Average Annual Temperature ◽  
Number Of Stems ◽  
Commercial Yield

The group Phureja (Solanum tuberosum L.) has been little studied in Peru, despite its culinary, nutritional and industrial quality and the risk of erosion to which it is subjected in recent decades. The objective of this research was to evaluate the total and commercial yield of tubers of fifteen potato cultivars (Solanum tuberosum, Phureja group). Traditional, yellow, and early cultivars were evaluated from Cajamarca region, Peru, to identify the most productive cultivars within the study group. The work was carried out on a plot of the Silvoagricultural Service of the Universidad Nacional de Cajamarca: 7 ° 10`LS and 78 ° 30’ LW, 2670 masl, 14.7 °C average annual temperature, 64.5% relative humidity and 651 mm of annual precipitation. Seeding was carried out at 0.90 m and 0.40 m between rows and between plants, respectively; in completely randomized block design, with three repetitions. Plant height, number of stems, number and total weight of tubers, number and weight of tubers according to categories, specific gravity, dry matter of tubers and foliage, and harvest index were evaluated. Significant statistical differences were found between cultivars for a total number of tubers, number of commercial tubers, a weight of commercial tubers, plant height, number of stems, dry matter of the tubers and harvest index. The best cultivars in tuber yield were Blanca amarilla (27.8 t/ha), Limeña huachuma (27.4 t/ha), Llanqueja (25.0 t/ha), Amarilla redonda (23.3 t/ha) and Piña amarilla (21.8 t/ha).

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 Combining Ability Analysis of Dry Matter Content, Reducing Sugars and Yield of Potato (Solanum tuberosum L.) Genotypes in Uganda

2020 ◽  
pp. 1-8
Author(s):  
Edgar Muhumuza ◽  
Richard Edema ◽  
Prossy Namugga ◽  
Alex Barekye
Keyword(s):  
Solanum Tuberosum ◽  
Combining Ability ◽  
Dry Matter ◽  
Reducing Sugars ◽  
Tuber Yield ◽  
Solanum Tuberosum L ◽  
Matter Content ◽  
Average Weight ◽  
Dry Matter Content ◽  
Additive Genetic Effects

Potato (Solanum tuberosum L.) in Uganda is a major food and cash crop mainly grown in the highland regions by small-scale farmers. The increasing importance of potato as a processed product requires new varieties possessing quality processing attributes with acceptable yield. The objectives of this study were to estimate the combining ability effects for dry matter content, reducing sugars, and yield related traits in potato. Nineteen F1 families generated from eight parents using a half diallel mating design were evaluated for dry matter content, reducing sugars, average weight per tuber and total tuber yield at Kachwekano research station. Additive genetic effects were predominant for dry matter content while non-additive effects for the other traits. The GCA/SCA ratios were 0.58, 0.28, 0.17 and 0.44 for dry matter content, reducing sugars, average weight per tuber and total tuber yield respectively. Broad sense heritability estimates were 50.6% for dry matter content, 77.8% for reducing sugars, 90.3% for average weight per tuber and 29.5% for total tuber yield. Parents NAROPOT 3 and 395096.2 had desirable GCA effects for both dry matter content and reducing sugars. Families of nkrk19.17 x Rutuku had desirable SCA effects for dry matter content while Rutuku x 393077.54 and nkrk19.17 x 392657.8 had desirable SCA effects for reducing sugars. Additive genetic effects for dry matter content imply that, genetic gains can be achieved through different selection methods and trait transferred to the respective progenies. The selected parents and families will be subjected to further clonal evaluation and selection.

scholarly journals Effects of Salt Stress on Dry Matter, Glucose, Minerals Content and Composition in Potato (Solanum tuberosum L.)

2019 ◽  
Vol 38 (1) ◽  
pp. 38-46
Author(s):  
Ju Sung Im ◽  
Mi Ok Kim ◽  
Me Soon Hong ◽  
Mi Suk Kim ◽  
Chung ki Cheun ◽  
...  
Keyword(s):  
Salt Stress ◽  
Solanum Tuberosum ◽  
Dry Matter ◽  
Solanum Tuberosum L

scholarly journals In Vitro Multiplication of Potato (Solanum tuberosum L.) cv. Cristal II—Microcutting Origin

HortScience ◽  
1997 ◽  
Vol 32 (3) ◽  
pp. 471F-472
Author(s):  
Gerson R. de L. Fortes ◽  
Luciana B. Andrade ◽  
Janine T.C. Faria ◽  
Marisa de F. Oliveira ◽  
Nilvane T.G. Müller
Keyword(s):  
Solanum Tuberosum ◽  
Dry Matter ◽  
Culture Media ◽  
Solanum Tuberosum L ◽  
Potato Cultivar ◽  
Meristem Culture ◽  
Multiplication Rate ◽  
High Dry Matter ◽  
Growth Room

The potato cultivar Cristal recently released by the CPACT/EMBRAPA Breeding Program has high dry matter and low reduce sugars. These are desirable characteristics as industry processing is concerned. Nevertheless, this is a recalcitrant cultivar. The meristem culture is difficult to establish along with a very low multiplication rate. The aim of this work was to improve the multiplication rate for this cultivar. Two-bud microcuttings derived from apical, mid, and basal regions were inoculated in test tubes with 10 ml MS culture media and vitamins as follows; myo-inositol (100 mg·L–1); sucrose (10 g·L–1). No growth regulator was added. All treatments were placed in a growth room in a 16-hour photoperiod; 25 ± 2°C and 2000 lux. One month later, although it was observed that the final growth was more pronounced for basal microcuttings, no difference could be detected for number of shoots and multiplication rate. It was concluded that it makes no difference whatsoever kind of microcutting is used to start the micropropagation process.

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