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Wheat plant height is an important agronomic trait affecting wheat yield, harvest index and lodging resistance of the plants, and cultivating wheat with proper plant height for production needs is one of the important goals of breeders. In order to explore more QTLs related to wheat plant height and suitable for marker-assisted breeding, the recombinant inbred line population was developed by Yangmai 158 and Xifeng, the backbone parents of the wheat area in the middle and lower reaches of the Yangtze River. The population genotype was analyzed by 55K SNP array and the genetic linkage map was constructed by JoinMap software. Combining the phenotypic data of plant height in four years, the QTLs associated with wheat plant height were mapped in the chromosomes. The result showed that the genetic linkage map containing 3 830 SNPs distributed in 2 784.9 cM of the wheat genome and the average distance between markers was 0.7 cM. A total of 39 repeatable plant height-related QTLs were detected on 21 chromosomes of wheat, of which 18 QTLs were only revealed in 2 years; 8 QTLs were found in 3-year data analysis, and 13 QTLs were mapped in 4 years. A single QTL explained 3.2%-13.6% of the plant height phenotypic variation. The stable QTLs mapped in the four years were individually derived from chromosomes 1B, 1D, 4A, 4B, 4D, 5A, 5B, and 7A of Xifeng and chromosomes 3A, 3D, 6A, 7B, and 7D of Yangmai 158. The QPh·jaas-3A.3 and QPh·jaas-7B.1 contributed by Yangmai 158 could explain 8.4%-13.4% and 9.1%-13.1% of the plant height phenotypic variation, which are helpful for molecular marker-assisted breeding of wheat in the middle and lower reaches of the Yangtze River.
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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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