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Chromosome arm 1RS of rye ( Secale cereale L.), when transferred to wheat ( Triticum sp.), significantly influences variety performance, because it carries genes for resistance to disease and insect pathogens. Inserted into wheat, 1RS also promotes haploid production, affects end-product quality, and sometimes affects yield. Therefore, its detection by breeders and geneticists is important. The entire...
The effect of the addition of a 0.1 ml drop of activated charcoal (AC) on microspore culture embryogenesis was studied in nine morphotypes of Brassica oleracea. Embryo yields were significantly increased in all of the morphotypes by the addition of the 0.1 ml drop of AC to the microspore culture media. The magnitude of the response to the addition of AC varied with the different plants and morphotypes...
The efficiency of two embryo rescue techniques, direct ovule culture and ovary-slice culture followed by ovule culture, is studied in crosses with Tulipa gesneriana as maternal genotype. The germination percentages increased, in most cases, significantly with increasing ages of te ovary-slices and ovules at the start of the cultures. The low number of embryos recovered at early culture dates is caused...
Ten microsatellite loci were analysed for 43 cultivars or breeding lines of rice. Polymorphism-Information-Content values ranged from 0.62 to 0.92. The microsatellite markers were found to be useful for cultivar identification and assessment of genetic relationships. Most of the cultivars could be uniquely identified by at least one microsatellite marker. Genetic heterogeneity was detected within...
The quantitative inheritance of the sinigrin and progoitrin content of Brussels sprouts was studied at three production locations in the Netherlands. The content of sinigrin and progoitrin of 30 F1-hybrids varied between the production locations, though their ranking with respect to the content of sinigrin and progoitrin was relatively stable. Using variance analysis the broad sense heritability (i...
The allelic variation of prolamin loci was studied in three F2 progenies from three crosses between the 1BL/1RS cultivar Triana and Yécora Rojo, Pavón and Florence Aurora, cultivars without the translocation. According to the 1:2:1 theoretical proportions observed in the allelic variants of the Glu-B3/Gli-B1 loci of the parent without the translocation, the inheritance as a block of the rye chromosome...
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