Claim · model-written summary
With one dose of Rfo2, a double-dose chromosome 7A factor is needed for fertility restoration above 25%.
- Taxon
- Triticum aestivum cv. Chinese Spring
Triticum aestivumt0 - Gene
- a factor on chromosome 7Ae0
- Outcome
- fertility restoratione0
- Qualifier
- both in double dosee0
Not reportedDirection
Verbatim
e0“in its single dose the presence of a factor on chromosome 7A and another factor either on chromosome 5A or 5B, both in double dose, is necessary to assure the same level of fertility restoration”
t0“Triticum aestivum cv. Chinese Spring”
Title
Koichiro TSUNEWAKI The Japanese Journal of Genetics 1982. doi:10.1266/jjg.57.513
Other claims from this paper (9)
- Association Double-dose Rfo2 on chromosome 1B restores selfed seed fertility above 25%.
- Association With one dose of Rfo2, a double-dose factor on chromosome 5A or 5B is needed for fertility restoration above 25%.
- Association Absence of Rfo2 causes complete sterility.
- Association Chromosome 1A contains modifiers that improve fertility restoration.
- Association Chromosome 4A contains modifiers that improve fertility restoration.
- Association Chromosome 7D contains modifiers that improve fertility restoration.
- Association A single Rfo2 dose cannot restore fertility above 25% when other restoration genes are heterozygous.
- Recommendation The authors conclude that single-dose Rfo2 has limited use in breeding hybrid wheat and fertile lines with ovata cytoplasm.
- Observation The findings provide another example of linkage between a fertility-restoring gene and a nucleolus-organizing region.