Rye chromosomes were selectively stained in the meiosis of triticale by means of heterochromatin banding techniques. Compared to wheat chromosomes, rye chromosomes showed reduced pairing at first meiotic metaphase. Within the rye genome this pairing failure was associated with the presence of large, terminal heterochromatic bands. Since these terminal bands of rye chromosomes are late replicati...

Wheat bran, rye, millet and corn meal supplements used alone or in various combinations with mixed oak sawdust significantly influenced crop cycle time, biological efficiency (BE) and basidiome quality of maitake (Grifola frondosa). The combination of 10% wheat bran, 10% millet and 10% rye and the combination of 10% wheat bran plus 20% rye gave the highest and most consistent yields. The shorte...

In tetraploid rye with single-substitution wheat chromosomes - 1A, 2A, 5A, 6A, 7A, 3B, 5B, 7B - chromosome pairing was analysed at metaphase I in PMCs with the C-banding method. The frequency of univalents of chromosome 1A was considerably higher than that of the other four wheat chromosomes of genome A (6A, 5A, 7A and 2A). Among chromosomes of genome B, the lowest mean frequency of univalents ...

Saccharomyces cerevisiae encodes two Pif1 family DNA helicases, Pif1 and Rrm3. Rrm3 promotes DNA replication past stable protein complexes at tRNA genes (tDNAs). We identify a new role for the Pif1 helicase: promotion of replication and suppression of DNA damage at tDNAs. Pif1 binds multiple tDNAs, and this binding is higher in rrm3Δ cells. Accumulation of replication intermediates and DNA dama...

objective: people are usually susceptible to carcinogenic aromatic amines, present in cigarrette smoke and polluted environment, which can cause dna damage. therefore, maintenance of genomic dna integrity is a direct result of proper function of dna repair enzymes. polymorphic diversity could affect the function of repair enzymes and thus augment the risk of different cancers. xeroderma pigment...

The relative suitability of potato and crops frequently grown in rotation with potato as hosts for Pratylenchus penetrans was evaluated. Suitability of rye, wheat, corn, oat, sorgho-sudangrass, and potato were compared in pot studies based on ratios of final population : initial population density and densities of nematodes in roots at harvest. Population densities increased more on potato, oat...

F all groups of plants, none can match the cereal grains in importance to O m a n . Their origins in cultivation have been traced back some 9,000 years to the beginnings of agriculture ( HELBAEK 1960). Extensive cytogenetic studies have been undertaken with this group of plants from which their taxonomic and supposed evolutionary relationships may be deduced (BELL 1965; RILEY 1965). Some of the...

dermatophytes are a group of keratinophilic fungi capable of invading keratinized tissues (skin, hair and nails). they cause dermatophytosis (commonly known as tinea or ring worm) in human and animals. in this report, dna similarities and genomic linkage of 40 dermatophytes strains was obtained from different universities, were studied by random amplified polymorphic dna (rapd–pcr) using 11 ran...