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Rayado fino virus of maize: additional studies on the relation between the virus and its insect vector


, : Rayado fino virus of maize: additional studies on the relation between the virus and its insect vector. Turrialba 26(1): 39-43

In further studies in Costa Rica on the relation between the rayado fino virus of maize and its vector Dalbulus maidis (DeLong & Wolc.) (see RAE/A 63, 5110, etc), the leafhopper was able to acquire the virus after an acquisition feed lasting 6 h and to transmit it to healthy plants after an inoculation feed of 8 h. Slightly higher proportions if viruliferous insects were obtained when the acquisition or inoculation feeding periods were extended.

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Rodrigo Callejas, R.; Gabino Reginato, M., 2000: Anerism in apples. II. Theories on the causes of induction of floral buds. Theories relating to the induction of floral buds in apples are summarized. Theories relating to plant nutrition have considered carbohydrates and nutrients, and the C/N ratio. General aspects of theories of hormonal regulation are outlined and mo...