Chromosome stability in callus derived from interspecific hybrids between Hordeum vulgare L. and its wild species H. bulbosum L.

The resistance to leaf rust and powdery mildew of recombinant lines of barley (Hordeum vulgare L.) derived from H. vulgare · H. bulbosum crosses

A set of 23 recombinant lines (RLs) of barley (Hordeum vulgare L.) derived from H. vulgare · H. bulbosum L. crosses was inoculated with barley leaf rust (Puccinia hordei) and powdery mildew (Blumeria graminis f.sp. hordei) at the seedling stage to identify their levels and mechanisms of resistance. Eight RLs were studied further in glasshouse and field tests. All three barley parents ( Emir , G...

PLANT REGENERATION FROM IMMATURE EMBRYO-DERIVED CALLUS OF BARLEY (Hordeum vulgare L.): EFFECT OF AUXINS AND CYTOKININS

Embryogenic callus was induced from culturing immature embryos of three barley cvs. Dissa, Golden Promise and Igri. Maximum embryogenic callus formation was achieved by culturing immature embryos on CC and LS medium containing 2 mg/litre and 2.5 mg/litre 2,4dichlorophenoxyacetic acid (2,4-D) respectively. Embryogenic calli were frequently produced distinguished somatic embryos on these medium. ...

Lysine Catabolism in Barley (Hordeum vulgare L.).

Lysine catabolism in seedlings of barley (Hordeum vulgare L. var. Emir) was studied by direct injection of the following tracers into the endosperm of the seedlings: aspartic acid-3-(14)C, 2-aminoadipic acid-1-(14)C, saccharopine-(14)C, 2,6-diaminopimelic acid-1-(7)-(14)C, and lysine-1-(14)C. Labeled saccharopine was formed only after the administration of either labeled 2,6-diaminopimelic acid...

Variation in salt tolerance of cultivated (hordeum vulgare L.)and wild (H. spontaneum C. koch)barley genotypes from iran

Loss of centromeric histone H3 (CENH3) from centromeres precedes uniparental chromosome elimination in interspecific barley hybrids.

Uniparental chromosome elimination occurs in several interspecific hybrids of plants. We studied the mechanism underlying selective elimination of the paternal chromosomes during the early development of Hordeum vulgare × Hordeum bulbosum embryos. The following conclusions regarding the role of the centromere-specific histone H3 variant (CENH3) in the process of chromosome elimination were draw...