Progress in Potato Cultivar Development — 1916–1991

1991 ◽  
Vol 68 (4) ◽  
pp. 245-246
Author(s):  
John A. Schoenemann
Keyword(s):  
Potato Cultivar ◽  
Cultivar Development

Overcoming the potato cultivar tuber resistance by the agents of main potato diseases in dependence from changes of mycological features of pathogens

2019 ◽  
Vol 326 (3) ◽  
pp. 69-72
Author(s):  
V.V. Vasilchenko ◽  
◽  
A.A. Adamov ◽  
O.A. Djigachev ◽  
A.N. Smirnov ◽  
...  
Keyword(s):  
Potato Cultivar ◽  
Tuber Resistance ◽  
Potato Diseases

WEEDS IN POTATO CULTURE AND THEIR OUTCOME IN SPREADING OF Alternaria spp.

2018 ◽  
Vol 17 (6) ◽  
pp. 159-166
Author(s):  
Halina Kurzawińska ◽  
Stanisław Mazur ◽  
Małgorzata Nadziakiewicz ◽  
Jacek Nawrocki
Keyword(s):  
Chenopodium Album ◽  
Potato Cultivar ◽  
Cirsium Arvense ◽  
Potato Plants ◽  
Potato Culture ◽  
Rapd Pcr ◽  
Microscopic Features ◽  
Weed Infestation ◽  
Pcr Method ◽  
Potato Crops

The aim of this study was to determine whether the weeds accompanying potato crops can be a source of Alternaria spp. causing Alternaria leaf blight and to determine the genetic similarities of Alternaria alternata isolates infecting selected weeds: Chenopodium album, Cirsium arvense and tested potato cultivar. Three-year field experiment was conducted on the potato cultivar ‘Vineta N’. The isolates were classified into different species on the basis of macro- and microscopic features. In each year of the study, A. alternata dominated among the isolated fungi colonizing the leaves of potato plants and the selected weeds. The genetic similarities of A. alternata isolates was determined by the RAPD-PCR method. Tested genetic forms of A. alternata were closely related; only small differences in the pattern of the separated amplification products was evidenced. The dominance of A. alternata on the weeds accompanying potato crops suggests that if weed infestation is extensive, the pathogen is very likely to spread and its population to increase.

Internal gas atmospheres, ethanol, and leakage of electrolytes from a flood-tolerant and a flood-susceptible sweet potato cultivar as influenced by anaerobiosis

1983 ◽  
Vol 61 (12) ◽  
pp. 3399-3404 ◽  
Author(s):  
Ling A. Chang ◽  
Larry K. Hammett ◽  
David M. Pharr
Keyword(s):  
Sweet Potato ◽  
Electrolyte Leakage ◽  
Potato Cultivar ◽  
Enriched Environment ◽  
Potato Cultivars ◽  
Susceptible Cultivar ◽  
Low Concentrations ◽  
Gas Atmosphere ◽  
High Concentrations

The postanaerobic behavior of sweet potato roots from a flood-tolerant cultivar, 'Centennial,' and a flood-susceptible cultivar, 'Caromex,' was studied. High concentrations of CO2 and low concentrations of O2 were present in the internal atmosphere of 'Caromex' roots even after the anaerobically pretreated roots were restored to air for a few days, whereas in 'Centennial,' the internal gas atmosphere was less affected by anoxia. Ethanol accumulation in 'Caromex' was consistently higher than in 'Centennial,' and the postanaerobic changes were different between cultivars. An inducation of electrolyte leakage was observed from both cultivars immediately after roots were exposed to a CO2-enriched environment for 48 h. The leakage became greater in 'Caromex' after a 3-day aerobic exposure. In 'Centennial,' leakage of electrolytes due to CO2 treatment diminished at the end of 3 days. Application of ethanol to the discs had no immediate effect on electrolyte leakage in either cultivar under a N2 environment. However, anaerobiosis alone resulted in higher electrolyte leakage. It remains to be determined that the postanaerobic patterns of 'Caromex' and 'Centennial' are characteristic of flood-susceptible and flood-tolerant sweet potato cultivars in general.

Effect of irrigation frequency on the incidence of second growth of Russet Burbank potatoes in north-west Tasmania

1988 ◽  
Vol 111 (2) ◽  
pp. 399-402 ◽  
Author(s):  
B. Chung ◽  
D. Armstrong ◽  
Sue Grice
Keyword(s):  
Water Stress ◽  
Potato Cultivar ◽  
High Temperature Stress ◽  
Russet Burbank ◽  
French Fries ◽  
Irrigation Frequency ◽  
North West ◽  
Second Growth ◽  
Tuber Bulking ◽  
High And Low Temperatures

In recent years, processors in Tasmania have introduced Russet Burbank as the most desirable potato cultivar for processing into French fries. Malformed tubers, collectively known as second growth, have been observed in some commercial Russet Burbank crops with the main defect being knobby tubers. Second growth of potato tubers has been shown to occur when the plant suffers a period of stress during the growth of the tubers such as drought, high and low temperatures, restricted soil aeration, interference with water and carbohydrate translocation and fertility imbalance (Sparks, 1958; Bodlaender, Lugt & Marinus, 1964; Iritani, 1981; Holder & Cary, 1984) or a combination of both drought and high temperature stress (Ohms, 1968). If stress from these factors is relieved, the renewed growth of the tuber is often confined to the eyes, producing knobby tubers (Moorby, 1978). Moderate water stress during early tuber bulking can lead to pear-shaped tubers (pointed at the basal end) whilst water stress during the latter part of the season can lead to tubers pointed at the apical end (Iritani, 1981). Knobby tubers are undesirable because knobs are easily broken off leading to yield loss and the exposure of tissue to infection. Severely pointed tubers cannot be processed efficiently into French fries.

Anthocyanins from a Norwegian potato cultivar

2003 ◽  
Vol 81 (3) ◽  
pp. 433-437 ◽  
Author(s):  
Torgils Fossen ◽  
Dag Olav Øvstedal ◽  
Rune Slimestad ◽  
Øyvind M. Andersen
Keyword(s):  
Potato Cultivar

Influence of potato cultivar, frying oil and sample pre-treatments on the contamination of French fries by 3-monochloropropane-1,2-diol fatty acid esters

2019 ◽  
Vol 124 ◽  
pp. 43-48 ◽  
Author(s):  
Adriana Pavesi Arisseto ◽  
Willian Cruzeiro Silva ◽  
Priscila Francisca Corrêa Marcolino ◽  
Gabriela Ramiro Scaranelo ◽  
Shirley Aparecida Garcia Berbari ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Potato Cultivar ◽  
Frying Oil ◽  
French Fries ◽  
Fatty Acid Esters ◽  
Acid Esters

Huckleberry Gold: A Specialty Market Potato Cultivar with Purple-Skin, Yellow-Flesh, High Tuber Antioxidants, and Resistance to Potato Cyst Nematode (H1) and Potato virus X (Nb and Rx1)

2014 ◽  
Vol 91 (5) ◽  
pp. 447-458 ◽  
Author(s):  
Jonathan L. Whitworth ◽  
Richard G. Novy ◽  
Jeffrey C. Stark ◽  
Stephen L. Love ◽  
Michael K. Thornton ◽  
...  
Keyword(s):  
Potato Virus ◽  
Potato Cultivar ◽  
Potato Virus X ◽  
Cyst Nematode ◽  
Potato Cyst Nematode ◽  
Yellow Flesh

Trends in temperate Australian grass breeding and selection

2003 ◽  
Vol 54 (3) ◽  
pp. 211 ◽  
Author(s):  
Rex Oram ◽  
Greg Lodge
Keyword(s):  
Natural Selection ◽  
Introduced Species ◽  
Complex Traits ◽  
Environmental Changes ◽  
Breeding Systems ◽  
Ecological Knowledge ◽  
Native Grasses ◽  
Species Diversification ◽  
Cultivar Development ◽  
Grass Breeding

Current trends in grass cultivar development are reviewed, with respect to the range of species involved, and the objectives and methodology within each species. Extrapolations and predictions are made about future directions and methodologies. It is assumed that selection will necessarily cater for the following environmental changes: (1) higher year-round temperatures, higher variability of rainfall incidence, and lower total winter and spring rainfall along the south of the continent; (2) higher nutrient and lime inputs as land utilisation intensifies; and (3) the grazing management requirements of the important pasture components will be increasingly defined and met in practice.The 'big four' species, perennial ryegrass, phalaris, cocksfoot and tall fescue, will continue to be the most widely sown species in temperate regions for many decades, with the latter 3 increasing most in area and genetic differentiation. However, species diversification will continue, especially with native grasses, legumes, and shrubs from fertile regions of Australia and exotics from little-explored parts of the world, such as South Africa, western North and South America, coastal Caucasus, and Iraq–Iran. By contrast, the recent high rate of species diversification in the tropics and subtropics will probably give way to a much lower rate of cultivar development by refinement and diversification within the established species. Domestication of native grasses will continue for amenity, recreational, land protection, and grazing purposes. As seed harvesting technologies and ecological knowledge improve, natural stands will become increasingly important as local sources of seed. It is suggested that many native grasses have been greatly changed by natural selection so as to withstand strong competition from introduced species under conditions of higher soil fertility and grazing pressure. Conversely, some introduced species are being selected consciously and naturally to persist in regions with irregular rainfall and less fertile soils. Therefore, the distinction between native and introduced grasses may be disappearing, and many populations of native species could now be as foreign to the habitats of pre-European settlement as are populations of introduced species that have been evolving here for 50–200 years. Methods used for genetic improvement will continue to be selection among both overseas accessions and the many native and introduced populations that have responded to natural selection in Australia. As well, there will be deliberate recurrent crossing and selection programs in both native and introduced species for specific purposes and environments. Increasingly, molecular biology methods will complement traditional ones, at first by the provision of DNA markers to assist the selection of complex traits, and for proving distinctness to obtain Plant Breeders' Rights for new cultivars. Later, genetic engineering will be used to manipulate nutritive value, resistance to fungal and viral diseases, and breeding systems, especially cytoplasmic male sterility and apomixis, to utilise heterosis in hybrid cultivars of grasses, particularly for dairying and intensive meat production.Areas where the practice and management of grass breeding and selection programs could be improved are highlighted throughout the review, and reiterated in a concluding statement. Most problems appear to stem from inadequate training in population ecology, population genetics, evolution, and quantitative inheritance.

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