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Production and Cytogenetical Analysis of a Rye‐Cytoplasmic Tetraploid Triticale
Author(s) -
Melz G.,
Schlegel R.
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.tb01117.x
Subject(s) - triticale , biology , chromosome pairing , hybrid , chromosomal translocation , ploidy , pairing , chromosome , genome , poaceae , meiosis , botany , secale , genetics , agronomy , gene , physics , superconductivity , quantum mechanics
A rye‐cytoplasmic tetraploid triticale was found in F s progenies of crosses between tetraploid rye‘No 1323’and hexaploid triticale‘KT 77′. In the tetraploid triticale, two complete rye genomes and two mixed wheat genomes, consisting of the chromosomes 1A. 2A, 4A, 7A, 3B, 5B, and 6B are present. The rye cytoplasm did not affect stability of rye chromosome pairing during metaphase 1, since rye chromosomes participated in pairing irregularities just as did wheat chramosomes, even on a larger scale. The fertility of F 0 , plants ranged from 0 to 75.6 %, always associated with high grain shrivelling. The analyzed pairing behaviour of induced triploid hybrids from crosses between the tetraploid triticale and diploid rye indicates the presence of at least one wheat‐rye translocation in one of the investigated triploid plants.