Cotton cultivar BRS 368RF was developed by EMBRAPA in a partnership with the Bahia Foundation, aiming to create high-yielding germplasm by adding transgenic traits addressed to Brazilian Savanna (cerrado) of the Northeast and North regions. BRS 368RF is a midseason cultivar and has yield stability and transgenic tolerance to glyphosate.
Key words:
Gossypium hirsutum; glyphosate tolerance; and lint yield
| Municipalities/State | Season | BRS 368RF | BRS 286 (control) | CV* | ||||
|---|---|---|---|---|---|---|---|---|
| CY (kg ha-1) | LP (%) | LY (kg ha-1) | CY (kg ha-1) | LP (%) | LY (kg ha-1) | |||
| Luís Eduardo Magalhães/BA | 2010/11 | 2451.0 | 41.7 | 1022.1 | 2208.0 | 41.2 | 910 | 16.3 |
| Santa Helena de Goiás/GO | 2010/11 | 4148.8 | 40.9 | 1768.9 | 3726.3 | 39.4 | 1512.5 | 10.3 |
| Santo Antônio de Goiás/GO | 2010/11 | 5447.0 | 41.0 | 2232.9 | 5995.0 | 39.5 | 2362.5 | 11.0 |
| Chapadão do Sul/MS | 2010/11 | 2834.5 | 42.2 | 1198.3 | 2663.4 | 40.4 | 1077.7 | 13.3 |
| São Desidério/BA | 2011/12 | 3495.0 | 41.8 | 1447.5 | 3327.0 | 42.3 | 1402.5 | 16.7 |
| Riachão das Neves/BA | 2011/12 | 3547.5 | 42.8 | 1519.5 | 2494.5 | 43.0 | 1080.0 | 24.4 |
| Correntina/BA | 2011/12 | 3297.0 | 42.8 | 1414.5 | 3664.5 | 43.5 | 1587.0 | 17.8 |
| Santa Helena de Goiás/GO | 2011/12 | 2382.0 | 42.9 | 1024.5 | 2458.5 | 42.3 | 1044.0 | 12.4 |
| Santo Antônio de Goiás/GO | 2011/12 | 4681.5 | 40.4 | 1873.5 | 4926.0 | 43.4 | 2143.5 | 12.6 |
| Cristalina/GO | 2011/12 | 4473.0 | 43.8 | 1963.5 | 3829.5 | 44.6 | 1713.0 | 14.6 |
| Montividiu/GO | 2011/12 | 5545.2 | 42.2 | 2344.2 | 5497.2 | 42.7 | 2351.2 | 16.0 |
| Chapadão do Sul/MS | 2011/12 | 1870.3 | 45.2 | 844.6 | 1982.7 | 44.6 | 884.6 | 17.1 |
| Sinop/MT | 2011/12 | 2226.8 | 43.6 | 969.0 | 2234.3 | 42.2 | 946.8 | 12.7 |
| Primavera do Leste/MT | 2011/12 | 4998.0 | 42.2 | 2106.0 | 4854.0 | 45.0 | 2170.5 | 15.4 |
| Campo Verde/MT | 2011/12 | 5583.0 | 43.3 | 2419.5 | 3793.5 | 43.1 | 1641.0 | 23.5 |
| Riachão das Neves/BA | 2012/13 | 3765.5 | 48.3 | 1819.3 | 3074.7 | 45.9 | 1412.4 | 16.6 |
| Luís Eduardo Magalhães/BA | 2012/13 | 4659.1 | 43.8 | 2040.9 | 3794.9 | 42.8 | 1627.7 | 13.5 |
| Mean | 3847.4 | 42.9 | 1647.6 | 3560.3 | 42.7 | 1521.6 | ||
| Traits | BRS 368RF | BRS 286 | IAC 25 |
|---|---|---|---|
| First flower (DAE)* | 54 | 54 | - |
| First open boll (DAE)* | 115 | 115 | - |
| Boll weight (g)a | 6.0 | 6.0 | - |
| Fiber length (UHML) (mm)a | 29.1 | 29.9 | - |
| Uniformity index (ML/UHML - %)a | 84.5 | 84.8 | - |
| Strength HVI (gf tex-1)a | 28.2 | 30.7 | - |
| Micronaire readinga | 4.1 | 4.2 | - |
| Elongation (%)a | 7.7 | 8.6 | - |
| Reflectance - Rd (%)a | 77.2 | 77.4 | - |
| Yellowness (+ b) a | 8.0 | 8.3 | - |
| Short fiber index (%)a | 7.0 | 5.7 | - |
| Total seed oil (%)b | 17.5 | 18.8 | - |
| Cotton leafroll dwarf virus c | 0.0 | 0.0 | - |
| False mildewd | 3.5 | 4.0 | - |
| Bacterial blightd | 1.0 | 1.0 | - |
| Ramulosise | 86.3 | - | 33.5 |
| Root-knot nematodef | 2.1 | - | 1.3 |
| Fusarium wiltg | 18.3 | - | 9.6 |
