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.

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 The Effect of Different Irrigation Interval on Tuber Yield and Quality of Potato (Solanum tuberosum L.)

2018 ◽  
Vol 3 (2) ◽  
pp. 27-31 ◽  
Author(s):  
Salah Abdulla Salih ◽  
Farhan Ahmad Abdulrahman ◽  
Yonis Abdulla Mahmood
Keyword(s):  
Solanum Tuberosum ◽  
Tuber Yield ◽  
Solanum Tuberosum L ◽  
Starch Content ◽  
High Yield ◽  
Yield And Quality ◽  
Irrigation Interval ◽  
Significant Difference ◽  
The Impact

Gaining high yield of potato is very crucial for farmer and quality also has a great impact on their production. Beside the quality and yield using the amount of irrigation also important to reduce water lose. The tuber yield and quality of potato (Solanum tuberosum L.) is impacted by irrigated water. This study was carried out in two respectively season (2017 and 2018) in Halabja province of Kurdistan regional of Iraq to evaluate the impact of irrigation interval on quality and tuber yield in potato cultivars. In this study there are  four irrigation intervals (3,5,7 and 9 days) used by furrow irrigation method which subjected in complete randomized design (CRD) with three replications. The potato tuber production in 3 day interval showed highest percentage also protein and starch content was recorded highest in both year of cultivation, but the abscisic acid was affected by more irrigation which in 3 day interval irrigation the rate was less than other. Also in 5 day interval irrigation the rate was acceptable because there is no significant difference in terms of tuber yield, protein and starch content if compare with 3 day interval irrigation in particular for those area faced restricted in using water irrigation.

scholarly journals Total phenol content of different varieties of brinjal (Solanum melongena L.) and potato (Solanum tuberosum L.) growing in Bangladesh

2013 ◽  
Vol 42 (1) ◽  
pp. 175-177
Author(s):  
Nazma Shaheen ◽  
Ali Abbas Mohammad Kurshed ◽  
Kazi Muhammad Rezaul Karim ◽  
Md Mohiduzzaman ◽  
Cadi Parvin Banu ◽  
...  
Keyword(s):  
Solanum Tuberosum ◽  
Solanum Tuberosum L ◽  
Solanum Melongena ◽  
Total Phenol ◽  
Total Phenol Content ◽  
Phenol Content ◽  
Fresh Weight ◽  
Dietary Antioxidant ◽  
Significant Difference ◽  
High Yielding Varieties

The total phenol content (TPC) of different varieties of Solanum melongena L. varied from 3.16 ± 0.04 - 7.86 ± 0.33 mg GAE/g of fresh weight (FW). It also revealed that all varieties of Solanum tuberosum L. with peel contained higher TPC than without peel. Comparison between mean TPC of different varieties Solanum tuberosum L. with and without peel on FW basis by independent sample the t-test showed a significant difference (p = 0.003) in TPC. Findings of present study indicate that BARI Begun-8, high yielding varieties of Solanum melongena and Solanum tuberosum with peel are good sources of polyphenols and therefore may contribute as a source of dietary antioxidant. DOI: http://dx.doi.org/10.3329/bjb.v42i1.15909 Bangladesh J. Bot. 42(1): 175-177, 2013 (June)

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

scholarly journals Efecto del ácido bórico y la luz en el número y biomasa de microtubérculos de papa cv. “Floresta”

Uniciencia ◽  
2017 ◽  
Vol 31 (2) ◽  
pp. 121
Author(s):  
José Antonio García-García ◽  
José Bernal Azofeifa-Bolaños
Keyword(s):  
Solanum Tuberosum ◽  
Boric Acid ◽  
Solanum Tuberosum L ◽  
Culture Conditions ◽  
Light Conditions ◽  
Lighting Conditions ◽  
Significant Difference ◽  
Murashige And Skoog Medium ◽  
Specific Culture

In order to understand the performance of Solanum tuberosum L. “Floresta” in producing microtubers, the effect of four concentrations of boric acid (6.2 mg l-1, 7.75 mg l-1, 9.3 mg l-1, and 10.85 mg l-1) under two conditions—1) 8 hour dark and 2) 16 hour light photoperiod and 8 hour dark—was evaluated under in vitro culture conditions. Full-strength Murashige and Skoog medium was used as a control. The data analysis for the number and biomass of microtubers were significant for the condition (p ≤ 0.05). Concerning the concentration of boric acid and the interaction between factors, a significant difference was obtained for biomass (p ≤ 0.05). In dark conditions, a greater number of microtubers was obtained, although the biomass was lower compared to the light conditions where the biomass was higher, and the number of microtubers was lower. A concentration of 9.3 mg l-1 of boric acid in both types of conditions was the best treatment to produce a greater number and more biomass of microtubers. The differences identified in this work with regards to the number and biomass of microtubers were probably the combined result of genotype and specific culture conditions. Even considering this, the use of lighting conditions is proposed to induce larger and greener microtubers.

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.

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