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

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.

Download Full-text

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

Canadian Journal of Plant Science ◽

10.4141/cjps89-123 ◽

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

Download Full-text

RESPONSE OF FOUR POTATO CULTIVARS TO METRIBUZIN TIME AND RATE OF APPLICATION

Canadian Journal of Plant Science ◽

10.4141/cjps79-065 ◽

1979 ◽

Vol 59 (2) ◽

pp. 417-422 ◽

Cited By ~ 10

Author(s):

J. A. IVANY

Keyword(s):

Adverse Effect ◽

Solanum Tuberosum ◽

Irish Cobbler ◽

Prince Edward Island ◽

Solanum Tuberosum L ◽

Potato Cultivars

Over a 4-yr period (1974–1977) the effect of metribuzin at three rates and times of application was evaluated on four potato (Solanum tuberosum L.) cultivars commonly grown on Prince Edward Island. Metribuzin applied preemergence and early postemergence had no adverse effect on marketable and total yields of Irish Cobbler, Netted Gem, Kennebec, and Sebago cultivars. Delaying metribuzin application until late postemergence resulted in significantly reduced marketable yields of Irish Cobbler and Sebago but not Netted Gem and Kennebec when compared with preemergence and early postemergence treatment. Total yields with late postemergence treatment were significantly less than those with the preemergence treatment for all four cultivars and significantly less than early postemergence treatment with Irish Cobbler and Sebago.

Download Full-text

EFFET DES DOSES, DES SOURCES ET DU MODE D’APPORT DE L’AZOTE SUR RENDEMENT ET LA MATURITE DE LA POMME DE TERRE CULTIVEE SUR DIFFERENTS TYPES DE SOLS DU QUEBEC

Canadian Journal of Soil Science ◽

10.4141/cjss82-055 ◽

1982 ◽

Vol 62 (3) ◽

pp. 503-517 ◽

Cited By ~ 4

Author(s):

MARCEL GIROUX

Keyword(s):

Specific Gravity ◽

Nitrogen Fertilization ◽

Field Experiments ◽

Solanum Tuberosum L ◽

Soil Series ◽

Experimental Site ◽

N Application ◽

N Content ◽

Tuber Specific Gravity ◽

Total Soil N

The objectives of this work were to determine the effects of N-fertilizer sources, rates and fractionation on potato (Solanum tuberosum L.) yields, petiole-N content, defoliation and tuber specific gravity. To achieve these ends, urea and ammonium nitrate were side-dressed at 0, 70, 140 and 210 kg N/ha, by applying either all at planting or by fractionating the applications into half at planting and the other half a month later. The field experiments were carried out on eight sites consisting of six soil series. Nitrogen fertilization increased yields on all sites; the rate required for attaining maximum yields varied for 130 to 210 kg N/ha, according to the experimental site, with an average of 180 kg N/ha. Generally, both N-sources and fertilization methods had similar effects on yields defoliation, petiole N-content and tuber specific gravity. A 210-kg urea-N application at planting on the Lapointe loamy sand, however, decreased yields significantly. The importance of soil type, available water and total soil-N are discussed in relation to the quantities of fertilizer-N required to achieve maximum yields.

Download Full-text

COPPER AND ZINC NUTRITION OF RUSSET BURBANK POTATOES GROWN ON PRINCE EDWARD ISLAND

Canadian Journal of Plant Science ◽

10.4141/cjps90-042 ◽

1990 ◽

Vol 70 (1) ◽

pp. 357-362 ◽

Cited By ~ 2

Author(s):

J. B. SANDERSON ◽

UMESH C. GUPTA

Keyword(s):

Solanum Tuberosum ◽

Specific Gravity ◽

Prince Edward Island ◽

Field Experiments ◽

Tuber Yield ◽

Solanum Tuberosum L ◽

Leaf Tissue ◽

Zn Content ◽

Zinc Nutrition ◽

Toxic Concentrations

Field experiments were conducted on potatoes (Solanum tuberosum L.) at two locations in P.E.I. to determine the response to soil- and foliar-applied Cu and Zn on tuber yield and leaf tissue nutrient concentration over a period of 3 yr. Foliar applications of 0.5–2 kg Cu ha−1 applied 1–2 wk prebloom reduced total tuber yield, number of tubers over 55 mm in diameter, average tuber weight, and specific gravity. The mean potato yield of tubers over 55 mm from the foliar-applied Cu treatments was less than the soil applied Cu by 4.5, 0.74, and 7.5 t ha−1 for 1985, 1986, and 1987, respectively. The toxic concentrations of Cu in potato leaves ranged from 63 to 139 μg g−1. Soil-applied Cu increased tissue Cu in the first sampling but had no effect in the second sampling. Foliar applications of Zn at 1–2 kg ha−1 reduced total tuber yield, tuber yield and tuber count over 55 mm, and specific gravity. The toxic concentrations of Zn in potato leaves ranged from 97 to 224 μg g−1. For the first sampling, the leaf tissue Zn concentrations ranged from 21 to 30 μg g−1 for the control and 27 to 70 μg g−1 for soil-applied Zn treatment. There was no difference in the Zn concentration between these two treatments for the second sampling. Copper and Zn concentrations as low as 7 and 21 μg g−1, respectively, in potato leaves were not related to deficiency of these nutrients, based on tuber yields. Soil applications of Cu or Zn would appear preferable to foliar sprays, which may cause phytotoxicity, as a means of increasing plant Cu or Zn content where a deficiency is suspected.Key words: Solanum tuberosum L., tuber yield, leaf copper, leaf zinc, Podzolic soil, potato

Download Full-text

Gas-exchange, water use efficiency and yield responses of elite potato (Solanum tuberosum L.) cultivars to changes in atmospheric carbon dioxide concentration, temperature and relative humidity

Agricultural and Forest Meteorology ◽

10.1016/j.agrformet.2013.12.001 ◽

2014 ◽

Vol 187 ◽

pp. 36-45 ◽

Cited By ~ 23

Author(s):

Kacper Piotr Kaminski ◽

Kirsten Kørup ◽

Kåre Lehmann Nielsen ◽

Fulai Liu ◽

Henrik Bak Topbjerg ◽

...

Keyword(s):

Carbon Dioxide ◽

Solanum Tuberosum ◽

Relative Humidity ◽

Gas Exchange ◽

Water Use ◽

Atmospheric Carbon Dioxide ◽

Solanum Tuberosum L ◽

Carbon Dioxide Concentration ◽

Use Efficiency ◽

Yield Responses

Download Full-text

Genome-Wide Association Mapping of Late Blight Tolerance Trait in Potato (Solanum tuberosum L.)

Frontiers in Genetics ◽

10.3389/fgene.2021.714575 ◽

2021 ◽

Vol 12 ◽

Author(s):

Fang Wang ◽

Meiling Zou ◽

Long Zhao ◽

Zhiqiang Xia ◽

Jian Wang

Keyword(s):

Solanum Tuberosum ◽

Late Blight ◽

Potato Breeding ◽

Genome Wide Association Study ◽

Solanum Tuberosum L ◽

Potato Cultivars ◽

Genome Wide Association ◽

Genome Wide ◽

Population Structure Analysis ◽

A Genome

Uncovering the genetic basis and optimizing the late blight tolerance trait in potatoes (Solanum tuberosum L.) are crucial for potato breeding. Late blight disease is one of the most significant diseases hindering potato production. The traits of late blight tolerance were evaluated for 284 potato cultivars to identify loci significantly associated with the late blight tolerance trait. Of all, 37 and 15 were the most tolerant to disease, and 107 and 30 were the most susceptible. A total of 22,489 high-quality single-nucleotide polymorphisms and indels were identified in 284 potato cultivars. All the potato cultivars were clustered into eight subgroups using population structure analysis and principal component analysis, which were consistent with the results of the phylogenetic tree analysis. The average genetic diversity for all 284 potato cultivars was 0.216, and the differentiation index of each subgroup was 0.025–0.149. Genome-wide linkage disequilibrium (LD) analysis demonstrated that the average LD was about 0.9 kb. A genome-wide association study using a mixed linear model identified 964 loci significantly associated with the late blight tolerance trait. Fourteen candidate genes for late blight tolerance traits were identified, including genes encoding late blight tolerance protein, chitinase 1, cytosolic nucleotide-binding site–leucine-rich repeat tolerance protein, protein kinase, ethylene-responsive transcription factor, and other potential plant tolerance-related proteins. This study provides novel insights into the genetic architecture of late blight tolerance traits and will be helpful for late blight tolerance in potato breeding.

Download Full-text

In vitro Regeneration and Agrobacterium-mediated Transformation of Potato (Solanum tuberosum L.) Cultivars Grown in Mexico

Plant Tissue Culture and Biotechnology ◽

10.3329/ptcb.v22i2.14193 ◽

2013 ◽

Vol 22 (2) ◽

pp. 93-105 ◽

Cited By ~ 1

Author(s):

Rose Onamu ◽

Juan P Legaria ◽

Jaime C Sahagún ◽

José L Rodríguez ◽

Joel N Pérez

Keyword(s):

Solanum Tuberosum ◽

Solanum Tuberosum L ◽

In Vitro Regeneration ◽

Potato Cultivars ◽

Pcr Analysis ◽

Nptii Gene ◽

Histochemical Assay ◽

Gus Histochemical Assay ◽

Binary Plasmid

Prior to Agrobacterium-mediated genetic transformation in vitro regeneration protocol was established for three potato cultivars (Alfa, Cambray Rosa Morelos and Atlantic) grown in Mexico using leaf, node and internodal explants. Regeneration protocol was developed with or without the intervention of callus. Two potato cultivars, namely, Cambray Rosa Morelos and Alpha were transformed using Agrobacterium tumefaciens strain LBA4404 harboring binary plasmid pBI121 containing the GUS and nptII genes. GUS histochemical assay and PCR analysis were conducted on rooted shoots grown in media without hormones but supplemented with antibiotics. Transformed shoots tested positive through GUS histochemical assay and integration of nptII gene was confirmed by PCR analysis DOI: http://dx.doi.org/10.3329/ptcb.v22i2.14193 Plant Tissue Cult. & Biotech. 22(2): 93-105, 2012 (December)

Download Full-text

ESTIMATION OF GENERAL AND SPECIFIC COMBINING ABILITIES IN POTATO

Canadian Journal of Genetics and Cytology ◽

10.1139/g76-056 ◽

1976 ◽

Vol 18 (3) ◽

pp. 463-470 ◽

Cited By ~ 36

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.

Download Full-text