Polyhaploids from a cross between Hordeum vulgare and the amphiploid (Hordeum jubatum and Hordeum compressum)

1983 ◽  
Vol 25 (6) ◽  
pp. 573-580 ◽  
Author(s):  
Gilbert D. Starks ◽  
William Tai ◽  
Robert P. Steidl
Keyword(s):  
Hordeum Vulgare ◽  
Chromosome Number ◽  
Comparative Study ◽  
Hordeum Vulgare L ◽  
Ploidy Levels ◽  
Hordeum Jubatum ◽  
Synthetic Hexaploid

Polyhaploids were obtained through the reduction of ploidy levels from a cross between a synthetic hexaploid amphiploid Hordeum jubatum L. and Hordeum compressum Griseb. and Hordeum vulgare L. The purpose of this work was to make a comparative study of the cytology, fertility, and morphology of the five polyhaploids and the amphiploid. Three of the polyhaploids were triploids, one had a variable chromosome number, and a fifth polyhaploid approached a pentaploid constitution. Mechanisms for the origin of the polyhaploids are suggested including those for the elimination of Hordeum vulgare chromosomes.

CHROMOSOMAL INSTABILITY IN A HYBRID BETWEEN HORDEUM VULGARE AND SECALE VAVILOVII

1982 ◽  
Vol 24 (2) ◽  
pp. 207-212 ◽  
Author(s):  
George Fedak ◽  
Chiharu Nakamura
Keyword(s):  
Hordeum Vulgare ◽  
Chromosome Number ◽  
Chiasma Frequency ◽  
Chromosomal Instability ◽  
Chromosome Instability ◽  
Somatic Tissue ◽  
Unreduced Gamete ◽  
Hordeum Vulgare L ◽  
The Mean

A hybrid was obtained between Hordeum vulgare L. cv. Betzes (2n = 2x = 14) and Secale vavilovii [Nürn. (2n = 2x = 14)] in which chromosome instability was observed in somatic and meiotic tissues. In somatic tissue the chromosomes per cell varied from 7 to 24 with a mean of 19.7. Similarly in meiotic tissue the chromosome number varied from 14 to 26 with a mean of 18.3. The mean chiasma frequency was 12.9 consisting of an average Ml configuration of 0.02IV + 0.3III + 6.68II + 3.92I. It was concluded that the hybrid was derived from the union of an unreduced gamete from Betzes barley with a normal gamete from S. vavilovii.

A comparative study of initiation and development of embryogenic callus from haploid embryos of several barley cultivars. II. Cytophotometry of embryos and callus

1986 ◽  
Vol 64 (9) ◽  
pp. 2107-2112 ◽  
Author(s):  
L. S. Kott ◽  
S. Flack ◽  
K. J. Kasha
Keyword(s):  
Hordeum Vulgare ◽  
Comparative Study ◽  
Ploidy Level ◽  
Embryogenic Callus ◽  
Hordeum Vulgare L ◽  
Barley Cultivars ◽  
Haploid Embryos ◽  
Diploid Level

Cells of haploid barley embryos (Hordeum vulgare L. 'Bruce', 'Perth', and 'Klages') and callus cells originating from embryos were cytophotometrically examined to determine the ploidy level. Specific embryo tissues regularly exhibited predictable ploidies and smaller embryos had a higher percentage of haploid cells than larger embryos of the same age. The predominantly haploid cells of the scutellar epidermis of the embryo initiated callus which generally, at least initially, was haploid. Monitoring of the ploidy evolution of these haploid calli showed that over a 6-month period each line exhibited its own unique rate of polyploidization, although lines of the same cultivar showed similar trends. Accumulation of cells at the diploid level was often a characteristic of these cultures.

CYTOGENETICS OF A BARLEY × RYE HYBRID

1979 ◽  
Vol 21 (4) ◽  
pp. 543-548 ◽  
Author(s):  
George Fedak
Keyword(s):  
Hordeum Vulgare ◽  
Chromosome Number ◽  
Chromosome Pairing ◽  
Secale Cereale ◽  
Chiasma Frequency ◽  
Somatic Chromosome ◽  
Pollen Parent ◽  
Somatic Chromosome Number ◽  
Hordeum Vulgare L ◽  
Secale Cereale L

A viable hybrid with a somatic chromosome number of 14 was obtained by crossing Hordeum vulgare L. with Secale cereale L. Chromosome pairing in the hybrid was very low with an average chiasma frequency of 0.22. Phenotypically the hybrid resembled rye, the pollen parent, but the nucleolar characteristics were similar to barley.

Electrophoretic and HPLC methods for comparative study of the protein fractions of malts, worts and beers produced from Scarlett and Prestige barley (Hordeum vulgare L.) varieties

2008 ◽  
Vol 106 (2) ◽  
pp. 820-829 ◽  
Author(s):  
Filipe Silva ◽  
Luciana C. Nogueira ◽  
Cristina Gonçalves ◽  
António A. Ferreira ◽  
Isabel M.P.L.V.O. Ferreira ◽  
...  
Keyword(s):  
Hordeum Vulgare ◽  
Comparative Study ◽  
Protein Fractions ◽  
Hordeum Vulgare L
Sign in / Sign up

Export Citation Format

Share Document