Abstract
1. The seed of crosses of Secale cereale with S. montanum and S. dalmaticum germinated only when S. cereale was the seed parent. 2. S. cereale was found to differ from S. montanum and S. dalmaticum by two large translocations involving three pairs of chromosomes, and a small translocation involving a fourth pair. The fertility of the F 1 plants was low, and in ear morphology and perennial habit they were similar to the S. montanum and S. dalmaticum parents. 3. S. montanum and S. dalmaticum were found to be similar in gross chromosome structure and their hybrids were phenotypically intermediate and fertile. 4. The F 2 of the cross S. cereale x S. dalmaticum consisted of three types, in terms of chromosome structural condition and plant morphology, those like one or other parent and those like the F 1 . 5. The genetic and evolutionary significance of this situation is discussed, together with the problem of the fixation of translocations in populations.
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Claims 8
Claim · model-written summary
Cross seed germinated only when S. cereale was the seed parent.
- Taxon
- Secale cereale
Secale cerealee0 - Material
- S. montanum and S. dalmaticume0
- Outcome
- germinated only when S. cereale was the seed parente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The seed of crosses of Secale cereale with S. montanum and S. dalmaticum germinated only when S. cereale was the seed parent.”
Claim · model-written summary
S. cereale differed from the two other species by two large translocations involving three chromosome pairs.
- Taxon
- S. cerealeSecale cerealee0
- Material
- S. montanum and S. dalmaticume0
- Outcome
- two large translocations involving three pairs of chromosomese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“S. cereale was found to differ from S. montanum and S. dalmaticum by two large translocations involving three pairs of chromosomes, and a small translocation involving a fourth pair.”
Claim · model-written summary
S. cereale differed from the two other species by a small translocation involving a fourth chromosome pair.
- Taxon
- S. cerealeSecale cerealee0
- Material
- S. montanum and S. dalmaticume0
- Outcome
- a small translocation involving a fourth paire0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“S. cereale was found to differ from S. montanum and S. dalmaticum by two large translocations involving three pairs of chromosomes, and a small translocation involving a fourth pair.”
Claim · model-written summary
The F 1 plants had low fertility.
Verbatim
e0“The fertility of the F 1 plants was low, and in ear morphology and perennial habit they were similar to the S. montanum and S. dalmaticum parents.”
t0“Secalespecies”
Claim · model-written summary
F 1 plants resembled S. montanum and S. dalmaticum in ear morphology and perennial habit.
Verbatim
e0“The fertility of the F 1 plants was low, and in ear morphology and perennial habit they were similar to the S. montanum and S. dalmaticum parents.”
Claim · model-written summary
S. montanum and S. dalmaticum had similar gross chromosome structure.
Verbatim
e0“S. montanum and S. dalmaticum were found to be similar in gross chromosome structure and their hybrids were phenotypically intermediate and fertile.”
Claim · model-written summary
Hybrids of S. montanum and S. dalmaticum were phenotypically intermediate and fertile.
Verbatim
e0“S. montanum and S. dalmaticum were found to be similar in gross chromosome structure and their hybrids were phenotypically intermediate and fertile.”
Claim · model-written summary
The S. cereale × S. dalmaticum F 2 comprised three chromosome and morphology types resembling parents or F 1.
- Taxon
- S. cereale x S. dalmaticumSecale cerealee0
- Material
- F 2e0
- Outcome
- three types, in terms of chromosome structural condition and plant morphologye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The F 2 of the cross S. cereale x S. dalmaticum consisted of three types, in terms of chromosome structural condition and plant morphology, those like one or other parent and those like the F 1 .”