Resistance to powdery scab inSolanum tuberosum L.

Powdery scab disease of potato — a review

“…The incidence of powdery scab can vary considerably from year to year (Vielwerth, 1949;Sprau, 1953;Janke, 1963;Manzer et al, 1964;Roer, 1983). Such variation is probably due largely to differences in the weather, particularly temperature and rainfall, between growing seasons that can affect both the rate of development of the crop, which determines the period of susceptibility to powdery scab, and the suitability of soil conditions for disease development.…”

“…All cultivars are susceptible (Wollenweber, 1921;Gomolyako, 1930;Philipp, 1932;Beregovoy, 1939;Mujica, 1942;Vielwerth, 1949;Sprau, 1953Sprau, , 1966Noll, 1963;Anonymous, 1971;Hide, 1981;Gans et al, 1987;De Boer, 1991) although some cultivars such as Agria, Estima, Kennebec, Pentland Crown, Rosa and Sequoia appear to be particularly prone to the disease (Bonde, 1955;Manzer et al, 1964;Hughes, 1980;Kirkham, 1986;Christ, 1987;Wale, 1987;Christ & Weidner, 1988;Wastie & Stewart, 1990;Genet, 1993) and others such as Exton, Merrimack, Nooksack, Norchip, Parnassia and Ulster Lancer show some resistance (Bonde, 1955;Bjor, 1978;Hughes, 1980;Kirkham, 1986;Christ & Weidner, 1988;Wastie et al, 1988). Most cultivars, however, are very susceptible to the disease.…”

Catalytic upgrading of α-angelica lactone to levulinic acid esters under mild conditions over heterogeneous catalysts

“…16 LAE have also been prepared from furfuryl alcohol (FA). 27 The synthesis of LAE from α-AL and alcohols has been reported as early as 1948. 19 However, considering that biorefinery processes likely use water as solvent or generate water during the processes, 20 LA and FA become the final products of the hydrolysis of HMF.…”

“…19 However, considering that biorefinery processes likely use water as solvent or generate water during the processes, 20 LA and FA become the final products of the hydrolysis of HMF. 6,[26][27][28] Different LAE were efficiently prepared in high selectivity at 100°C over Amberlyst® 15 (A15). [23][24][25] Nevertheless, the formation of water during esterification prohibits complete conversion.…”

Pre and Post Harvest Diseases of Potato and Their Management

“…Light-skinned and red-skinned potato varieties in general are most susceptible (Christ 1993 ). Cultivars resistant to the disease have been developed in Germany, Russia and Chile (Manzer et al 1964 ).…”