Haploids Obtained from Diploid*Triploid Crosses of Citrus.
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چکیده
منابع مشابه
Factors Influencing the Numbers of Seedlings Obtained from Sugarcane Crosses
Reasons for low numbers of seedlings from crosses made in recent years were investigated. High temperature and low humidity at the time of pollination decreased seedling numbers in some years. Photoperiodism, time of flowering and nutrition could also have affected the numbers of seedlings obtained.
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Haploids are plants (sporophytes) that contain a gametic chromosome number (n). They can originate spontaneously in nature or as a result of various induction techniques. Spontaneous development of haploid plants has been known since 1922, when Blakeslee first described this phenomenon in Datura stramonium (Blakeslee et al., 1922); this was subsequently followed by similar reports in tobacco (N...
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The first aneuploid strains of Dictyostelium discoideum have been unambiguously characterized, using cytological and genetic analysis. Three independently isolated, but genetically similar, fragment chromosomes have been observed in segregants from diploids formed between haploid strains derived from the NC4 and V12 isolates of D. discoideum. Once generated, the fragment chromosomes, all of whi...
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Strains of baker's yeast conventionally used by the baking industry in Japan were tested for the ability to sporulate and produce viable haploid spores. Three isolates which possessed the properties of baker's yeasts were obtained from single spores. Each strain was a haploid, and one of these strains, YOY34, was characterized. YOY34 fermented maltose and sucrose, but did not utilize galactose,...
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suns. The extension of the Andromeda nebula beyond the photographic limits is presumably typical of what may be found for other such objects. Comparisons with the surface brightness of the galaxy are still hampered by uncertainties in the data for our own system. There may be no part of the galaxy which, seen from outside, would be as bright as the central portion of M 31. In the latter system ...
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ژورنال
عنوان ژورنال: Engei Gakkai zasshi
سال: 1993
ISSN: 1880-358X,0013-7626
DOI: 10.2503/jjshs.62.89