Szerző szerinti böngészés "Nemes, Katalin"

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    TételSzabadon hozzáférhető
    Fruit melanotic ringspot (FMRS) – a disease of resistant Capsicum genotypes infected with Tomato spotted wilt virus (TSWV) on the fruits
    (2011-10-30) Salamon, Pál; Nemes, Katalin; Salánki, Katalin
    Etiology of pepper fruit melanotic ringspot (FMRS) disease (Salamon, 2009) was studied on fruit samples collected in forced pepper populations. It was noticed that in spite of heavy thrips (Frankliniella occidentalis) infestations and of TSWV epidemy detected in the forcing houses, FMRS occurred only in plants having healthy foliage. Symptomatological surveys strongly suggested that FMRS appeared exclusively in specific pepper genotypes. The size of melanotic ringspots has been observed to grow at room temperature during postripening of diseased fruits. A mechanically transmitted plant virus was isolated from symptomatic parts of 9 white pepper fruits affected by FMRS. On test plants each of the virus isolates caused systemic symptoms characteristic to TSWV. Using cDNA/PCR technique and TSWV N-gene specific primers a ca. 300 bp long DNA fragment has been amplified from total nucleic acid extracted from symptomatic tissues but never from asymptomatic parts of the fruits showing FMRS. Plant progenies grown from seeds of FMRS diseased fruits segregated in respect of resistance and/or susceptibility to TSWV infection. TSWV was also detected in and isolated from three fruits showed non-melanotic yellow rings (one of them was infected with a tobamovirus, too). Seedlings derived from these fruits proved to be susceptible to TSWV. Based on the above results we could conclude that the FMRS disease developed on fruits of “cecei” type white peppers that carry a TSWV resistance gene, most likely the Tsw gene in heterozygous form. These fruits were infected with thrips transmitted TSWV and FRMS appeared as a hypersentive reaction (HR) manifested in fruits.
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    TételKorlátozottan hozzáférhető
    The Android Race
    (2013-03-18T15:43:50Z) Nemes, Katalin; Morse, Donald E.; DE--TEK--Bölcsészettudományi Kar
    These are the two ways human beings can usually imagine the behavior of their artificial creatures and these are the two attitudes human characters in the Hyperion series show towards androids. These beings are the creations of humankind, and as such, cannot be considered more than mere machines. Those people, however, who get into close contact with A. Bettik during the course of events, cannot help but regard him as a fellow human being. Nevertheless, if the android is asked about it, he declares that he is no machine, nor does he desire to be human but he considers himself a member of a different race--androids (Endymion 59). This point of view offers a new way for humans to define androids’ and other artificial beings’ place in the symbiotic society of human beings and their artificial creatures.