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Nulli-tetrasomic materials are the important chromosomal genetic wheat materials, which have been used for target gene localization. However, fewer studies reported on the agronomic and quality traits of nulli-tetrasomic materials. In order to analyze the effects of chromosome deletions and duplications on major agronomic and quality traits of wheat, the agronomic, grain and flour processing quality traits of 38 nulli-tetrasomic materials were investigated. The results showed that coefficients of variation of agronomic traits showed grain number per spike>tiller number>spike length>spikelet number>plant height. Compared with the control（Chinese spring）, the number of spikelets of N7D-T7A increased significantly; the number of grains per spike of N2A-T2B and N6B-T6A decreased significantly; the plant height of N4B-T4A and N7D-T7A increased significantly; the plant height of N6D-T6B decreased significantly; the spike length of N4A-T4B and N7A-T7B decreased significantly; yet there was no significant difference in the number of tillers between all nulli-tetrasomic materials and the control. The coefficients of variation of grain traits of the nulli-tetrasomic materials ranked as 1 000-grain weight>grain area>length-width ratio>grain width>grain length>perimeter; compared with the control, the grain area of N3B-T3D, N3D-T3A, N3D-T3B, N6A-T6B, and N6B-T6A increased significantly; the grain width of N3B-T3A, N3B-T3D, N3D-T3B, N6A-T6B, and N6B-T6A increased significantly, and the length-width ratio of N1B-T1A, N1B-T1D, N3A-T3D, N4A-T4B, N4A-T4D, N5B-T5A, N5B-T5D, N6A-T6D, N7A-T7B, and N7A-T7D decreased significantly. The 1 000-grain weight of N2A-T2B was significantly reduced, and there was no significant difference in circumference and grain length between all nulli-tetrasomic materials and the control. The variation coefficients of flour quality traits of the nulli-tetrasomic materials ranked as Zeleny>wet gluten content>protein content>moisture content>starch content; compared with the control, the nulli-tetrasomic materials had differences in flour quality traits, which are not significant. The coefficients of variation of nulli-tetrasomic materials ranked as stability time>development time>farinograph quality number>weakening value>water absorption; compared with the control, only the first homologous group nulli-tetrasomic materials showed significant differences in dough development time and stability time. Among them, the stability time of N1A-T1B dough reached significant differences, the dough development time and the stability time of N1A-T1D reached extremely significant differences, while there was no significant difference in other indices between the nulli-tetrasomic materials and the control. The results of this study lay a foundation for further analysis of the genetic effects of nulli-tetrasomic materials.
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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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