Chromosome specific control of chiasma frequency in rye
نویسندگان
چکیده
منابع مشابه
identification of chromosome segments of rye 1rs in aegilops genus using dna specific molecular marker
plant breeders use rye (secale cereale l.) as a foreign genetical resource tool in increasing wheat genetical variations. 1r chromosome and especially its short arm, 1rs has been introduced into wheat genome frequently. 1rs studies and effective selection is used in cytogenetical, chemicals techniques and dna markers. present study was conducted to investigate the presence of rye chromosome seg...
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Natural variation in meiotic recombination frequency in Arabidopsis thaliana has been assessed by analyzing chiasma frequency variation among a range of geographically and ecologically diverse accessions. Fifty pollen mother cells at metaphase I of meiosis were analyzed from each of eight accessions and fluorescence in situ hybridization was applied to enable identification of all 10 chromosome...
متن کاملLooking for natural variation in chiasma frequency in Arabidopsis thaliana.
Information concerning natural variation either in chiasma frequency or in the genetic basis of any such variation is a valuable tool to characterize phenotypic traits and their genetic control. Here meiotic recombination frequencies are analysed in nine geographically and ecologically diverse accessions of Arabidopsis thaliana, and a comparative study was carried out incorporating previous dat...
متن کاملDevelopment of new PCR-based markers specific for chromosome arms of rye (Secale cereale L.).
PCR-based rye (Secale cereale L.) chromosome-specific markers can contribute to the effective utilization of elite genes of rye in wheat (Triticum aestivum L.) breeding programs. In the present study, 578 new PCR-based rye-specific markers have been developed by using specific length amplified fragment sequencing (SLAF-seq) technology, and 76 markers displayed different polymorphism among rye K...
متن کاملSubstitution of rye chromosome 5r for chromosome 5b of wheat and its effect on chromosome pairing.
HEXAPLOID wheat normally exhibits homologous pairing, forming only bivalents at meiosis. However, in the absence of chromosome 5B, homoeologous as well as homologous pairing occurs ( SEARS and OKAMOTO 1958; RILEY and CHAPMAN 1958; RILEY and KEMPANNA 1963). In 5Bdeficient hybrids between wheat and related genera, the level of chromosome pairing is increaesd (RILEY, CHAPMAN and KIMBER 1959). In w...
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ژورنال
عنوان ژورنال: Heredity
سال: 1985
ISSN: 0018-067X,1365-2540
DOI: 10.1038/hdy.1985.126