tagging of fertility restorer loci using recessive class analysis in wild abortive cytoplasmic male sterility system in rice
نویسندگان
چکیده
tagging of restorer genes for wild abortive (wa) of cytoplasmic male sterility was carried out by studying 10000 individuals from an f2 population of a cross between ir58025a × ir42686r. this study was primarily carried out to reduce the distance of the already known markers for rf gene. this f2 population was identified to be unique as four rf genes could be tagged to ssr markers on chromosomes 1, 7, 10, & 12. the rf3 gene on chromosome 1 was flanked on either side with rm443 and rm315 at a genetic distance of 3.3 and 20.2 cm, respectively. rf6 located on chromosome 10, was flanked with tightly linked ssr markers on either side at a genetic distance of 2.2 and 4.3 cm. here a new molecular marker rm519 is reported to be linked to rf7 on chromosome 12 at a genetic distance of 7.8 cm. moreover, rm6344 was confirmed to be linked to rf4 on chromosome 7 at a genetic distance of 12.2 cm. tagging of closely linked flanking ssr markers to four rf genes will be extremely useful for breeders to have this source screened. in addition, pyramiding of each rf genes with other known sources will be an excellent provision for developing super restorers
منابع مشابه
INHERITANCE OF FERTILITY RESTORATION INVOLVING WILD ABORTIVE CYTOPLASMIC MALE STERILITY SYSTEM IN RICE (Oryza sativa L.)
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The possibility of occurrence of some rearrangements inside and or around coxII and atp6 genes and their relationship with male sterility in rice lines having wild abortive (WA) cytoplasm was studied. Two sterile (IR58025A and IR62829A) and two maintainer lines (IR58025B and IR62829B) were used. Radioactive Southern blotting was employed to carry out the experiments. The hybridization of coxII...
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متن کامل
the possible role of atp6 gene in cytoplasmic male sterility in wa (wild abortive) type of rice (oryza sativa l.)
the possibility of occurrence of some rearrangements inside and or around coxii and atp6 genes and their relationship with male sterility in rice lines having wild abortive (wa) cytoplasm was studied. two sterile (ir58025a and ir62829a) and two maintainer lines (ir58025b and ir62829b) were used. radioactive southern blotting was employed to carry out the experiments. the hybridization of coxii...
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عنوان ژورنال:
علوم گیاهان زراعی ایرانجلد ۴۱، شماره ۱، صفحات ۰-۰
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