Cytological Studies on Unreduced Male Gamete Formation in Hybrids between Tetraploid Emmer Wheats and Aegilops squarrosa L.
نویسندگان
چکیده
منابع مشابه
Unreduced gamete formation in plants: mechanisms and prospects.
Polyploids, organisms with more than two sets of chromosomes, are widespread in flowering plants, including many important crop species. Increases in ploidy level are believed to arise commonly through the production of gametes that have not had their ploidy level reduced during meiosis. Although there have been cytological descriptions of unreduced gamete formation in a number of plants, until...
متن کاملsimulation and experimental studies for prediction mineral scale formation in oil field during mixing of injection and formation water
abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...
Genome size variation in diploid and tetraploid wild wheats
BACKGROUND AND AIMS Intra- and interspecific variations of C-values and the relationship between habitat factors and genome size were studied in natural populations of diploid and tetraploid wild wheats. METHODOLOGY The 1C nuclear DNA content of 376 individual plants representing 41 populations of diploid and tetraploid wild wheats was determined by flow cytometry (FCM) and correlated with ge...
متن کاملCytological Characterization and Pollen Viability Studies in the Interspecific Hybrids between Helianthus Annuus and Helianthus Maximiliani
The present investigation was undertaken with a view to study Cytological behavior of F1 interspecific hybrids of diploid wild perennial species Helianthus maximilini (2n = 34) and with cultivated sunflower Helianthus annuus (2n = 34) prebred line M-106. The interspecific hybrids have annual life cycle with the diploid somatic chromosome number thirty four. Chromosome association represented by...
متن کاملHybrids and amphiploids of Aegilops ovata L. with Secale cereale L.: production, morphology and fertility.
Hybrids (2n = 3x = 21) between Aegilops ovata and Secale cereale were produced via embryo rescue. Most hybrid morphological traits were intremediate between parents, the plants grew vigorously but were completely sterile. The average frequency of chromosome associations at metaphase I was 19.57-20.19 univalents and 0.40-0.86 rod bivalents. The fertility of the hybrids was restored by doubling t...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Japanese Journal of Breeding
سال: 1992
ISSN: 0536-3683,2185-291X
DOI: 10.1270/jsbbs1951.42.255