Barley chromosome number

Metal ions and complexes may induce chromosome aberrations and Cu + and Pb + (Levan, 1945) or phenyl and methyl mercury (Ramel, 1969) very efficiently lead to disturbances of the nuclear spindle which are of a kind that could lead to aneuploidy. Diploids are less suited to detect the phenotypic effect in Xg of chromosome losses. However, a certain mutagenic effect in the pea caused by a number of metal ions was fpund by von Rosen (1964). Sterility at doses above LD50 of the mercury complexes has been recorded in barley (Ehrenberg et aLy unpublished). Scheibe (1959) found a mutagenic effect in barley and wheat of AICI3 when applied to the spike following the method of Oehlkers (1949). 

In addition to the trypsin inhibitors are very interesting inhibitors of chymotrypsin and subtilisin, which are the most heterogeneous structure and variability of all species of wheat and corn and barley, which are controlled by fifth chromosome, while the wheat and rye - I homoeologous group of chromosomes of different genomes. In diploid wheat, a number of species (T, timopheevii) identified the protein components capable of inhibiting both subtilisin and chymotrypsin, which are characterized by low variability (Konarev et al., 2004). 

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