IRGA 431 CL is an early rice variety, and its main characteristic is the resistance to Imidazolinones herbicides. The variety stands out for its excellent plant architecture, strong stems, high yield potential, good grain quality, and resistance to blast and high levels of toxic iron in the soil. It is recommended for exploitation in the rice fields of Rio Grande do Sul, Brazil.
Keywords:
Breeding; flooded rice; herbicide-tolerant; imidazolinones
| Plant Characteristics | Description |
|---|---|
| Leaf color | Green |
| Leaf pubescence | Medium |
| Flag leaf angle | Upright |
| Stem length | Short |
| Tiller angle | Upright |
| Panicle size | Medium |
| Panicle type | Intermediate |
| Shattering | Intermediate |
| Awns | Absent |
| Glumella pubescence | Hairy |
| Glumella color | Straw color |
| Apex color at maturity | Yellow |
| Cycle to maturity | 120 days |
| Thousand paddy grain weight | 25 g |
| Disease | Scientific name | Note1 | Severity | Class |
|---|---|---|---|---|
| Iron toxicity | --- | 1 | Only old leaves | Resistant |
| Blast leaf | Pyricularia oryzae | 1 | 0-3 | Resistant |
| Blast panicle | Pyricularia oryzae | 1 | 0-1 | Resistant |
| Grain spotting | Bipolaris sp. and Phoma sp. | 3 | de 1 a 5 % | Moderately Resistant |
| Sheath blight | Rhizoctonia solani | 3 | de 11 a 25 % | Moderately Resistant |
| Brown spot | Bipolaris oryzae | 7 | de 26 a 50 % | Moderately Susceptible |
| Leaf scald | Microdochium oryzae | 3 | de 11 a 25 % | Moderately Resistant |
| Varieties | Crop seasons | Means | |
|---|---|---|---|
| 2015/2016 | 2016/2017 | ||
| IRGA 431 CL | 10.942 | 10.401 | 10.671 |
| IRGA 424 RI | 9.680 | 11.103 | 10.391 |
| IRGA 428 | 9.765 | 9.642 | 9.703 |
| Puitá INTA CL | 7.731 | 7.811 | 7.771 |
| Type | Dimensions1 (mm) | C/L ratio | ||
|---|---|---|---|---|
| Length (C) | Width (L) | Thickness | ||
| Shelled | 9.57 | 2.16 | 1.81 | 4.43 |
| Peeled | 7.43 | 1.95 | 1.63 | 3.81 |
| Milled (Polished) | 6.72 | 1.89 | 1.61 | 3.55 |
Thumbnail
Thumbnail
Thumbnail
