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  • Title: Response of six strawberry (Fragaria x ananassa Duch.) cultivars to the root lesion nematode (Pratylenchus penetrans Filipjev and Schurmanns Stekhoven).
    Author: Villanueva L, Flores M, Pedroche N.
    Journal: Commun Agric Appl Biol Sci; 2010; 75(3):487-96. PubMed ID: 21539269.
    Abstract:
    In the Philippines, strawberry is grown only in Benguet Province because of its unique climatic conditions. It has been a lucrative source of income for Benguet farmers and adds to the revenue of Benguet Province. The root lesion nematode, Pratylenchus penetrans is an economically important pest of strawberry in the area. It can cause substantial losses to strawberry growers, both by reducing vegetative plant growth and by reducing strawberry yields. The nematode has a very wide host range and hence, is not readily controlled by crop rotation. An alternative approach which growers may wish to consider trying is planting of strawberry varieties which are either resistant or tolerant to this nematode. The relative susceptibility/tolerance of six strawberry cultivars to the root lesion nematode, P. penetrans was evaluated under greenhouse and field conditions. Inoculation of 500 nematodes/pot did not significantly affect the fresh top weight, fresh root weight, and yield of strawberry cultivars Festival, Whitney, Winterdawn, Earlibrite, and Camarosa. The said cultivars had significantly higher number of nematodes recovered from the roots. On the other hand, the highest strawberry yield was recorded in cv Sweet Charlie, however, this was significantly reduced by nematode inoculation .Surprisingly, the number of nematodes recovered from the roots of this cultivar was significantly the lowest among the cultivars tested. Results of the field experiment showed that strawberry cv Sweet Charlie gave the highest marketable yield which was significantly different from the rest of the cultivars tested. This was followed by Festival, and Earlibrite. On the other hand, Camarosa and Whitney gave significantly lower yield than the above cultivars but significantly higher than Winterdawn. In terms of nematodes recovered from the roots, the highest was noted in Whitney, followed by Sweet Charlie and Earlibrite. The lowest was obtained from Camarosa, followed by Festival and Winterdawn. Based on the results of the greenhouse experiment, Festival, Whitney, Winterdawn, Earlibrite and Camarosa can be considered tolerant while Sweet Charlie was slightly susceptible to P. penetrans. However, based on the field trial, Sweet Charlie, Festival and Earlibrite were tolerant while Whitney, Camarosa and Winterdawn were slightly susceptible.
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