Abstract
Zhong 5 is a partial amphiploid (2n = 56) between Triticum aestivum (2n = 42) and Thinopyrum intermedium (2n = 42) carrying all the chromosomes of wheat and seven pairs of chromosomes from Th. intermedium. Following further backcrossing to wheat, six independent stable 2n = 44 lines were obtained representing 4 disomic chromosome addition lines. One chromosome confers barley yellow dwarf virus (BYDV) resistance, whereas two other chromosomes carry leaf and stem rust resistance; one of the latter also confers stripe rust resistance. Using RFLP and isozyme markers we have shown that the extra chromosome in the Zhong 5-derived BYDV resistant disomic addition lines (Z1, Z2, or Z6) belongs to the homoeologous group 2. It therefore carries a different locus to the BYDV resistant group 7 addition, L1, described previously. The leaf, stem, and stripe rust resistant line (Z4) carries an added group 7 chromosome. The line Z3 has neither BYDV nor rust resistance, is not a group 2 or group 7 addition, and is probably a group 1 addition. The line Z5 is leaf and stem rust resistant, is not stripe rust resistant, and its homoeology remains unknown.
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Claims 11
Claim · model-written summary
Six stable lines representing four disomic chromosome additions were obtained.
- Taxon
- wheat
Triticum aestivumt0 - Outcome
- disomic chromosome addition linese0
- Value
- 4 disomic chromosome addition linese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“six independent stable 2n = 44 lines were obtained representing 4 disomic chromosome addition lines”
t0“wheat”
Claim · model-written summary
One added chromosome confers barley yellow dwarf virus resistance.
- Taxon
- wheatTriticum aestivumt0
- Interactor
- barley yellow dwarf virus
Barley yellow dwarf viruse0pathogen - Gene
- One chromosomee0
- Outcome
- barley yellow dwarf virus (BYDV) resistancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“One chromosome confers barley yellow dwarf virus (BYDV) resistance”
t0“wheat”
Claim · model-written summary
Two other chromosomes carry leaf and stem rust resistance.
- Taxon
- wheatTriticum aestivumt0
- Gene
- two other chromosomese0
- Outcome
- leaf and stem rust resistancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two other chromosomes carry leaf and stem rust resistance”
t0“wheat”
Claim · model-written summary
One rust-resistance chromosome also confers stripe rust resistance.
- Taxon
- wheatTriticum aestivumt0
- Gene
- one of the lattere0
- Outcome
- stripe rust resistancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“one of the latter also confers stripe rust resistance”
t0“wheat”
Claim · model-written summary
BYDV-resistant lines Z1, Z2, and Z6 carry an added homoeologous group 2 chromosome.
- Taxon
- wheatTriticum aestivumt0
- Material
- Z1, Z2, or Z6e0
- Outcome
- belongs to the homoeologous group 2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the extra chromosome in the Zhong 5-derived BYDV resistant disomic addition lines (Z1, Z2, or Z6) belongs to the homoeologous group 2”
t0“wheat”
Claim · model-written summary
The BYDV-resistance locus differs from the earlier group 7 addition L1.
- Taxon
- wheatTriticum aestivumt0
- Gene
- different locuse0
- Outcome
- BYDV resistant group 7 additione0
- Comparator
- L1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It therefore carries a different locus to the BYDV resistant group 7 addition, L1”
t0“wheat”
Claim · model-written summary
Rust-resistant Z4 carries an added group 7 chromosome.
- Taxon
- wheatTriticum aestivumt0
- Material
- Z4e0
- Outcome
- carries an added group 7 chromosomee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The leaf, stem, and stripe rust resistant line (Z4) carries an added group 7 chromosome”
t0“wheat”
Claim · model-written summary
Z3 has neither BYDV nor rust resistance.
- Taxon
- wheatTriticum aestivumt0
- Material
- Z3e0
- Outcome
- neither BYDV nor rust resistancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The line Z3 has neither BYDV nor rust resistance”
t0“wheat”
Claim · model-written summary
Z3 is probably a group 1 addition.
- Taxon
- wheatTriticum aestivumt0
- Material
- Z3e0
- Outcome
- probably a group 1 additione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The line Z3 has neither BYDV nor rust resistance, is not a group 2 or group 7 addition, and is probably a group 1 addition”
t0“wheat”
Claim · model-written summary
Z5 resists leaf and stem rust but not stripe rust.
- Taxon
- wheatTriticum aestivumt0
- Material
- Z5e0
- Outcome
- leaf and stem rust resistant, is not stripe rust resistante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The line Z5 is leaf and stem rust resistant, is not stripe rust resistant, and its homoeology remains unknown”
t0“wheat”
Claim · model-written summary
Z5 homoeology remains unknown.
- Taxon
- wheatTriticum aestivumt0
- Material
- Z5e0
- Outcome
- homoeology remains unknowne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The line Z5 is leaf and stem rust resistant, is not stripe rust resistant, and its homoeology remains unknown”
t0“wheat”