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- Urban, J.; Lebeda, A.
- Annals of applied biology 2006 v.149 no.1 pp. 63-75
- Cucurbitaceae; Pseudoperonospora cubensis; breeding; chemical control; cultivars; downy mildew; field experimentation; fungicide resistance; fungicides; mechanism of action; pathogens; plant tissues
- ... Cucurbit downy mildew, caused by Pseudoperonospora cubensis, is among the most devastating diseases of cucurbitaceous plants. In spite of improved cultural practices and breeding for resistant cultivars, chemical control is still a very important tool to manage the disease. During the last several decades, many fungicides from various chemical classes have been developed. The occurrence of strains ...
- Alburquerque, N.; Egea, J.; Burgos, L.; MartÍnez-Romero, D.; Valero, D.; Serrano, M.
- Annals of applied biology 2006 v.149 no.1 pp. 27-33
- apricots; cultivars; flowering; fruit set; ovarian development; ovules; putrescine; spermidine; spermine
- ... Polyamine (PA) concentrations of ovaries of two apricot cultivars, 'S405-17' and 'Bergeron', collected at three stages of floral development, were analysed. The relationships between PA profiles, ovule development and fruit load between the two apricot cultivars were also determined. We show that PA levels vary with ovary development, depending on the cultivar. Higher concentrations of putrescine ...