Abstract
A type of self‐compatibility, differing from the S 1 gene, was observed in diploid alsike clover. A factor, nonallelic to, but modifying the S locus was postulated. This locus was designated as the A locus and was inherited independently of the S locus. The A 1 allele and an allele of the S locus (S 1 ) interacted to change the compatibility reaction of the pollen from self‐incompatibility to self‐compatibility. Dominance was not expressed at the A locus. The self‐compatibility genotype of the source plant was considered to be A 1 A 2 S 1 S 2 . Variation for self‐compatibility was continuous, ranging from a single seed per several hundred manipulated florets to 95% of the florets setting seed. I 1 , I 2 , I 3 , and I 4 progenies of self‐compatible plants segregated I self‐incompatible (SI) 1 self‐compatible (SC) plant. One of the sterility allele homozygotes was missing in the SI group of the I 1 progeny. The sporophytic effect was shown also by SI ✕ SC sib crosses. The compatibility reaction of A 1 S 1 gametes from a SI source differed from those with a SC origin.
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Claims 9
Claim · model-written summary
A self compatibility type distinct from S1 was observed.
Verbatim
t0“Alsike Clover”
e0“A type of self‐compatibility, differing from the S 1 gene, was observed in diploid alsike clover”
Claim · model-written summary
The A locus was inherited independently of the S locus.
Verbatim
t0“Alsike Clover”
e0“This locus was designated as the A locus and was inherited independently of the S locus”
Claim · model-written summary
A1 and S1 interacted to change pollen reaction to compatibility.
Verbatim
t0“Alsike Clover”
e0“The A 1 allele and an allele of the S locus (S 1 ) interacted to change the compatibility reaction of the pollen from self‐incompatibility to self‐compatibility”
Claim · model-written summary
The A locus did not express dominance.
Verbatim
t0“Alsike Clover”
e0“Dominance was not expressed at the A locus”
Claim · model-written summary
Self compatibility ranged from rare seed set to 95% of florets.
Verbatim
t0“Alsike Clover”
e0“Variation for self‐compatibility was continuous, ranging from a single seed per several hundred manipulated florets to 95% of the florets setting seed”
Claim · model-written summary
Self compatible progenies segregated incompatible and compatible plants.
Verbatim
t0“Alsike Clover”
e0“I 1 , I 2 , I 3 , and I 4 progenies of self‐compatible plants segregated I self‐incompatible (SI) 1 self‐compatible (SC) plant”
Claim · model-written summary
A sterility allele homozygote was absent from the SI group of I1 progeny.
Verbatim
t0“Alsike Clover”
e0“One of the sterility allele homozygotes was missing in the SI group of the I 1 progeny”
Claim · model-written summary
SI by SC sib crosses showed a sporophytic effect.
Verbatim
t0“Alsike Clover”
e0“The sporophytic effect was shown also by SI ✕ SC sib crosses”
Claim · model-written summary
A1S1 gamete compatibility differed by source plant compatibility.
Verbatim
t0“Alsike Clover”
e0“The compatibility reaction of A 1 S 1 gametes from a SI source differed from those with a SC origin”