Hanyou 3015 is a new Indica hybrid of water-saving and drought-resistance rice (WDR), combining rapid maturation and high yield potential. Whole genome sequencing results show that Hanyou 3015 carries many superior alleles that could explain its drought tolerance, high water use efficiency, rapid maturation, and wide adaptability.
Keywords:
Rice; breed; water-saving and drought-resistance rice; whole genome sequencing; drought tolerances
| Descriptor | Phenotype |
|---|---|
| Flag leaf | Semi-erect |
| Leaf blade pubescence | Absent |
| Leaf ligule length | Medium |
| Leaf sheath color | Green |
| Culm length (cm) | Medium to long (98.17) |
| Panicle length (cm) | Medium to long (25.83) |
| Presence of awns | Absent |
| Spikelet stigma color | White |
| Spikelet glume color | Pale yellow |
| Length of hulled grains (mm) | 8.39 |
| Number of grains per spike | 230.5 |
| Seed setting rate (%) | 93.33 |
| Thousand seed weight (g) | 26.9 |
| Variety | Year | Yield (kg ha-1) | Effective panicles (1000 ha-1) | Plant height (cm) | Number of seeds per spike | Seed setting rate (%) | Thousand seed weight (g) |
| Hanyou 3015 | 2018 | 8,227.4 | 2910 | 106.9 | 150.3 | 86.7 | 26.8 |
| 2019 | 8,251.2 | 3465 | 106.6 | 142.1 | 85.0 | 25.6 | |
| Hanyou 73 | 2018 | 7,924.5 | 2490 | 114.3 | 178.8 | 86.8 | 29.4 |
| 2019 | 7,850.3 | 2790 | 112.8 | 161.9 | 87.2 | 28.7 |
| Variety | Year | Brown rice percentage (%) | Head rice percentage (%) | Chalkiness degree (%) | Translucency | Alkali spreading value | Gel consistency (mm) | Amylose content (%) | Ratio of length and width |
| Hanyou 3015 | 2018 | 70.5 | 53.6 | 6.3 | 2 | 4.5 | 67 | 14.9 | 3.3 |
| 2019 | 80.0 | 51.1 | 4.8 | 2 | 6.5 | 53 | 16.6 | 3.4 | |
| Hanyou 73 | 2018 | 72.3 | 55.9 | 3.5 | 2 | 5.0 | 75 | 14.6 | 3.2 |
| 2019 | 80.6 | 40.8 | 3.8 | 1 | 6.5 | 65 | 14.3 | 3.4 |
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