Abstract
Response to natural selection and to visual mass selection for anther extrusion and seed set and their possible effects on several agronomic and seed quality traits of wheat (Triticum aestivum L.) were evaluated in F3 to F7 bulk populations from six R/B (restorer/cultivar) crosses, one R/R (restorer/restorer) cross, and one A/R (male sterile/restorer) cross. All populations had a male sterility inducing cytoplasm, either Aegilops speltoides Tausch, Triticum zhukovskyi Men. & Er. or Triticum timopheevi Zhuk., and were segregating and heterogeneous for fertility restorer genes. Visual mass selection for anther extrusion in F3 and F5 generation bulks effectively increased the mean anther extrusion of successive generations. Relative to the original F3 bulk mean, this increase was 19% per cycle of mass selection. Neither natural selection nor mass selection for seed set increased anther extrusion. Two cycles of mass selection for anther extrusion or seed set did not cause significant adverse effects on heading date, plant height, grain yield, test weight, and grain protein percentage. A slight decrease in 200-kernel weight was noted.
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Claims 9
Claim · model-written summary
Mass selection for anther extrusion increased mean anther extrusion in successive generations.
- Material
- F3 and F5 generation bulkse0
- Treatment
- Visual mass selection for anther extrusione0
- Outcome
- mean anther extrusione0
- Direction
- increasede0
Not reportedTaxonComparator
Verbatim
e0“Visual mass selection for anther extrusion in F3 and F5 generation bulks effectively increased the mean anther extrusion of successive generations”
Claim · model-written summary
Anther extrusion rose 19% per selection cycle relative to the original F3 bulk mean.
- Treatment
- mass selectione0
- Outcome
- increasee0
- Direction
- increasee0
- Value
- 19% per cyclee0
- Comparator
- original F3 bulk meane0
Not reportedTaxon
Verbatim
e0“Relative to the original F3 bulk mean, this increase was 19% per cycle of mass selection”
Claim · model-written summary
Natural selection did not increase anther extrusion.
Not reportedTaxonComparator
Verbatim
e0“Neither natural selection nor mass selection for seed set increased anther extrusion”
Claim · model-written summary
Mass selection for seed set did not increase anther extrusion.
Not reportedTaxonComparator
Verbatim
e0“Neither natural selection nor mass selection for seed set increased anther extrusion”
Claim · model-written summary
Two cycles of anther extrusion selection caused no significant adverse effects on heading date, plant height and grain yield.
- Treatment
- mass selection for anther extrusione0
- Outcome
- heading date, plant height, grain yielde0
- Direction
- no_changeinferrede0
Not reportedTaxonComparator
Verbatim
e0“Two cycles of mass selection for anther extrusion or seed set did not cause significant adverse effects on heading date, plant height, grain yield, test weight, and grain protein percentage”
Claim · model-written summary
Two cycles of anther extrusion selection caused no significant adverse effects on test weight and grain protein percentage.
- Treatment
- mass selection for anther extrusione0
- Outcome
- test weight, and grain protein percentagee0
- Direction
- no_changeinferrede0
Not reportedTaxonComparator
Verbatim
e0“Two cycles of mass selection for anther extrusion or seed set did not cause significant adverse effects on heading date, plant height, grain yield, test weight, and grain protein percentage”
Claim · model-written summary
Two cycles of seed set selection caused no significant adverse effects on heading date, plant height and grain yield.
- Treatment
- mass selection for anther extrusion or seed sete0
- Outcome
- heading date, plant height, grain yielde0
- Direction
- no_changeinferrede0
Not reportedTaxonComparator
Verbatim
e0“Two cycles of mass selection for anther extrusion or seed set did not cause significant adverse effects on heading date, plant height, grain yield, test weight, and grain protein percentage”
Claim · model-written summary
Two cycles of seed set selection caused no significant adverse effects on test weight and grain protein percentage.
- Treatment
- mass selection for anther extrusion or seed sete0
- Outcome
- test weight, and grain protein percentagee0
- Direction
- no_changeinferrede0
Not reportedTaxonComparator
Verbatim
e0“Two cycles of mass selection for anther extrusion or seed set did not cause significant adverse effects on heading date, plant height, grain yield, test weight, and grain protein percentage”
Claim · model-written summary
Selection was associated with a slight decrease in 200-kernel weight.
Not reportedTaxon
Verbatim
e0“A slight decrease in 200-kernel weight was noted”