Pathogenicity of Pratylenchus penetrans to dwarfing apple rootstocks
نویسندگان
چکیده
منابع مشابه
Effects of Fenamiphos on Pratylenchus penetrans and Growth of Apple.
A 3-year study was conducted to evaluate fenamiphos at 20.2 kg a.i./ha applied in both fall and spring or in spring only for the control of Pratylenchus penetrans on apple, Malus domestica cv. Granny Smith on M7a rootstock. The initial population densities of P. penetrans within the plot area were 89/250 cm(3) soil and 268/g root dry weight. Fenamiphos increased (P < 0.05) trunk diameter in yea...
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Anhydrobiotic survival of Pratylenchus penetrans was compared in several soil moisture regimes. Bodies of anhydrobiotic nematodes were coiled. In slow-dried soils, Vineland silt loam (VSL) and Fox loamy sand (FLS), 70 and 58% of the total P. penetrans populations were anhydrobiotic when soil moistures reached ca. 3% and water potential 15 kPa or greater. Coiling began at a much lower water pote...
متن کاملImpact of Plant Nutrition on Pratylenchus penetrans Infection of Prunus avium Rootstocks.
A hypothesis that cherry rootstocks grown under optimal nutrient conditions are affected less by Pratylenchus penetrans infection than those grown under deficient nutrient conditions was tested by growing four Prunus avium L. rootstocks ('Mazzard', 'Mahaleb', 'GI148-1', and 'GI148-8') at a soil pH of 7.0 over a period of 3 months under greenhouse conditions (25 ñ 2 degrees C). Pratylenchus pene...
متن کاملMorphological variation in Pratylenchus penetrans.
Variability of morphological characters used to separate Pratylenchus penetrans from other species of the genus was studied in a population originating from a single gravid female. Pronounced heteromorphism was observed and characterized. About 30% of females had a crenate-tail terminus. Several shapes of stylet knobs were characterized; 50% of them were anteriorly flattened to indented. The ou...
متن کاملResistance in Potato to Pratylenchus penetrans.
Potato clones from five different breeding populations were evaluated for their relative resistance and susceptibility to Pratylenchus penetrans. Resistance and susceptibility were distinguished by an index of susceptibility (SI) calculated from the numbers of P. penetrans (including eggs) per g of root of individual clones in relation to that of a susceptible control at 30 or 70 days after ino...
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ژورنال
عنوان ژورنال: Phytoprotection
سال: 2019
ISSN: 0031-9511,1710-1603
DOI: 10.7202/1059304ar