Premium
Meiosis in Two New Intergeneric Hybrids between Hordeum and Secale
Author(s) -
Gutta P. K.,
Fedak G.
Publication year - 1987
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/j.1439-0523.1987.tb01165.x
Subject(s) - secale , biology , meiosis , hybrid , ploidy , hordeum vulgare , chromosome pairing , hordeum , botany , genetics , pairing , metaphase , cytogenetics , poaceae , chromosome , gene , superconductivity , physics , quantum mechanics
The diploid hybrid Hordeum californicum × Secale vavilovii and the tetraploid hybrid H. parodii × S. anatolicum , were obtained through embryo rescue techniques at relative frequencies of 0.70 and 5.3 % of pollinated florets, respectively. Means of 11.74 1 + 1.13 11 per cell at metaphase I of meiosis were obtained in the diploid hybrid and 14.74 1 + 6.3l 11 + 0.22 111 + 0.02 IV in the tetraploid hybrid with a maximum of 6.0 1 + 4.0 11 and 9.0 11 +2.0 111 + 1.0 IV respectively. In the diploid hybrid there was preponderance of intragenomic pairing (86.7 %). Increased pairing in the tetraploid hybrid was attributed to autosyndesis among Hordeum chromosomes .