BRS 901 and BRS 902 are red pericarp rice cultivars developed by Embrapa for irrigated and rainfed lowland production systems in Brazil. These cultivars have medium and early maturation cycles, respectively, and both have high grain yield potential, good lodging tolerance and short to medium length grains.
Keywords:
Oryza sativa L.; special rice breeding; pigmented rice; red-grained rice; proanthocyanidins
| Traits | BRS 901 | BRS 902 |
|---|---|---|
| Flag leaf attitude | upright | upright |
| Leaf color | dark green | dark green |
| Leaf blade pubescence | pubescent | pubescent |
| Plant height | 107 cm | 88 cm |
| Ligule length | 1.93 cm | 2.06 cm |
| Days to heading | 94 | 86 |
| Awn | partly awned | absent |
| Panicle exsertion | fully exserted | fully exserted |
| Panicle length | 24.3 cm | 22.2 cm |
| Awn color | straw | straw |
| Apiculus color | straw | white |
| Kernel length | 5.84 mm | 6.10 mm |
| Kernel width | 2.59 mm | 2.88 mm |
| Kernel color | red | red |
| 1000-grain weight | 28.1 g | 32.8 g |
| Amylose content | 26.0 % | 26.5 % |
| Gelatinization temperature | low | low |
| Grain class | short | medium |
| Percentage of head rice | 73% | 65% |
| Lodging tolerance | intermediate | moderately strong |
| Panicle shattering | low | low |
| Panicle threshability | intermediate | intermediate |
| Seed dormancy | 100 days | 80 days |
| leaf and panicle rice blast | susceptible | susceptible |
| Cultivar | Biological cycle (days after emergence) | Plant height (cm) | Lodging index (scale from 1 to 9) | Grain yield (kg ha-1) |
|---|---|---|---|---|
| BRS 901 | 124 a | 107 b | 2.1 | 6,040 a |
| BRS 902 | 116 b | 88 c | 1.4 | 6,343 a |
| Vermelho | 109 c | 133 a | 5.2 | 4,846 b |
| Environment | Year | Cultivars | CV | |||||
|---|---|---|---|---|---|---|---|---|
| BRS 901 BRS 902 Vermelho SCS119 Rubi BRS Fronteira | ||||||||
| Teresina/PI | 2009 | 9,124 a | 10,166 a | 4,624b | - | - | 12.6 | |
| Aparecida/PB | 2009 | 5,383 a | 4,374 b | 5,283a | - | - | 19.0 | |
| Teresina/PI | 2010 | 8,411 | 8,049 | 7,244 | - | - | 10.0 | |
| Aparecida/PB | 2010 | 3,108 a | 3,088 a | 1,941b | - | - | 7.1 | |
| Itaporanga/PB | 2010 | 5,866 a | 6,716 a | 5,024b | - | - | 13.0 | |
| Teresina/PI | 2011 | 5,890 b | 8,208 a | 3,625c | - | - | 15.6 | |
| Aparecida/PB | 2011 | 3,184 a | 3,155 a | 2,110b | - | - | 7.6 | |
| Apodi/RN | 2011 | 3,289 | 3,122 | 2,615 | - | - | 14.0 | |
| Teresina/PI | 2012 | 10,566 a | 10,633 a | 8,483b | - | - | 14.1 | |
| Apodi/RN | 2012 | 5,753b | 6,371 ab | 7,515a | - | - | 10.0 | |
| Cantá/RR | 2012 | 6,377 | 6,908 | - | 7,559 | - | 8.7 | |
| Goianira/GO | 2012 | 6,454 b | 6,431 b | 9,025 a | - | 8.9 | ||
| Canas/SP | 2012 | - | 6,288 | - | - | 5,102 | 21.4 | |
| Roseira/SP | 2012 | - | 6,858 | - | - | 6,809 | 10.5 | |
| Tremembé/SP | 2012 | - | 7,468 | - | - | 7,823 | 10.7 | |
| Taubaté/SP | 2012 | - | 5,636 | - | - | 5,972 | 14.6 | |
| Pindamonhangaba/SP | 2013 | - | 5,862 | - | 5,415 | - | 9.7 | |
| Guaratinguetá/SP | 2013 | - | 6,543 b | - | 7,748 a | - | 11.5 | |
| Campos/RJ | 2013 | - | 3,990 | - | 4,541 | - | 18.5 | |
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