EurekaMag.com logo
+ Site Statistics
References:
52,725,316
Abstracts:
28,411,598
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Regulation of homologous pairing in penta ploid wheat hybrids


Genetica (Dordrecht) 58(1): 47-50
Regulation of homologous pairing in penta ploid wheat hybrids
Comparisons were made of levels of chromosome pairing in pentaploid hybrids between normal and ph1b- and ph2-mutant forms of Triticum aestivum ssp. vulgare cv. Chinese Spring each crossed with T. kotschyi and T. turgidum var. dicoccoides. Higher levels of multivalent formation in the ph1b-kotschyi, compared with the ph1b-dicoccoides pentaploid was attributed mainly to the absence of allelic buffering, by the Ph1 allele, in the kotschyi pentaploid and its presence in the dicoccoides pentaploid. The higher level of homeomologous pairing in the ph2-dicoccoides pentaploid compared with that of kotschyi was believed to be due to differential levels of homeo- and non-homoallelic buffering in the 2 pentaploids. The high level of homoeologous pairing caused by the ph2-mutant in the dicoccoides pentaploid indicates a potential use of pairing promoters, free of homoallelic buffering, as a means of increasing the level of homeologous pairing in wheat and in certain of its hybrids with alien species.


Accession: 006288490



Related references

Cytology and fertility of penta ploid wheat hybrids with induced pairing between homoeologous chromosomes. Canadian Journal of Genetics & Cytology 24(4): 397-408, 1982

Genetic analysis of tetra ploid and hexa ploid wheat m by utilization of mono penta ploid hybrids. Theoretical and Applied Genetics 41(2): 67-74, 1971

Studies on genetic mechanisms controlling univalent transmission in wheat part 1 a comparison of 2 penta ploid hybrids having natural and synthetic common wheat as the hexa ploid parent. Cytologia (Tokyo) 39(4): 815-828, 1974

Meiotic failure in penta ploid wheat hybrids. Sel'skokhozyaistvennaya Biologiya 14(5): 577-581, 1979

Genetic analysis of tetra ploid and hexa ploid wheats m by the utilization of mono penta ploid hybrids. Atti Associazione Genetica Italiana 15: 75-76, 1970

The relation between chromosome number and fertility in penta-ploid wheat hybrids. Kagaku (Science), Tokyo, 6: 337-41, 1936

Variation in the transmission of uni valent chromosomes from penta ploid wheat m hybrids. Canadian Journal of Genetics & Cytology 10(4): 908-912, 1968

Meiotic pairing control in wheat rye hybrids i. effect of different wheat chromosome arms of homologous groups 3 and 5. Genome 34(1): 72-75, 1991

Study on the non-homologous pairing in hybrids of wheat with rye. Acta Agriculturae Universitatis Pekinensis 16(4): 369-373, 1990

Investigations in the meiosis of triticale part 3 chromosomal arrangement and pairing in poly ha ploid wheat rye hybrids. Biologisches Zentralblatt 96(6): 679-692, 1977