INHERITANCE IN NICOTIANA TABACUM. XVII. CYTOGENETICAL ANALYSIS OF GLUTINOSA-TYPE RESISTANCE TO MOSAIC DISEASE
نویسندگان
چکیده
منابع مشابه
Inheritance in Nicotiana Tabacum. Xix. Identification of the Tabacum Chromosome Replaced by One from N. Glutinosa in Mosaic-Resistant Holmes Samsoun Tobacco.
N ORDER to produce better cultivated plants and animab by hydridizaI tion, the breeder usually relies upon an exchange of genic material between varieties or species. This is accomplished by conjugation of the chromosomes in pairs during meiosis and subsequent crossing over. In interspecific hybrids, however, chromosomes frequently do not conjugate. Therefore the utilization of valuable genic m...
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In Nicotiana glutinosa L. formation of local lesions on lower leaves inoculated with tobacco mosaic virus increased the susceptibility of the upper leaves to infection in a subsequent inoculation. The increase in susceptibility was detected as an increase of up to 3"5-fold in the number of lesions produced on the upper leaf and a corresponding increase in the amount of virus RNA synthesized. Th...
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Ultra-thin sections of Nicotiana glutinosa L. leaves inoculated with a concentrated solution of tobacco mosaic virus were made at short intervals from 0 to 78 hours after inoculation. Eight hours after inoculation, the size of starch grains increased. This was followed by rupture of cytoplasmic and chloroplast membranes. At about 24 hours there was a great increase in number of mitochondria, wh...
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ژورنال
عنوان ژورنال: Genetics
سال: 1943
ISSN: 1943-2631
DOI: 10.1093/genetics/28.6.533