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Outline
In order to explore the genetic mechanisms underlying the fertility restoration of T-type cytoplasmic male sterility (CMS) in wheat, the restorer line T16-2-1R was crossed with the sterile lines T9023A and T-Luohan 7A to create hybrid combinations. The parents of the two combinations as well as the F1 and F2 generations were investigated for fertility. A mixed genetic model major gene + polygene was employed to analyze the inheritance of fertility restoration in the T-type sterile lines. The results showed that both T9023A/T16-2-1R and T-Luohan 7A/T16-2-1R combinations of restorative inheritance were controlled by two pairs of additive-dominant-superior major genes + additive-dominant polygenes, and both of them had reciprocal effects. The heritability of the major genes in the combination of T9023A/T16-2-1R was 98.6405%, and the heritability of polygenes was 0.2283%; the heritability of the major genes in the combination of T-Luohan 7A/T16-2-1R was 98.1538%, and the heritability of polygenes was 0.1364%. These findings suggest that the heritability of the major genes for fertility restoration in T16-2-1R is very high, enabling effective selection in early generations.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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