Cultivars1 grouped into Meloidogyne incognita (Mi) resistance categories2 for analysis_
| Cultivar | Mi categoryb | Trials | Years |
|---|---|---|---|
| DP 1454NR B2RF | NR | 2 | 2016 |
| DP 1558NR B2RF | NR | 9 | 2016 to 2017 |
| DP 1747NR B2XF | NR | 11 | 2016 to 2019 |
| DP 1823NR B2XF | NR | 3 | 2018 to 2019 |
| FM 1621GL | PR | 3 | 2018 to 2019 |
| FM 1911GLT | PR | 12 | 2016 to 2019 |
| FM 2011GT | PR | 8 | 2016 to 2018 |
| PHY 250 W3FE | PR | 1 | 2019 |
| PHY 320 W3FE | PR | 4 | 2018 to 2019 |
| PHY 350 W3FE | PR | 2 | 2018 |
| PHY 400 W3FE | PR | 4 | 2018 to 2019 |
| PHY 417 WRF | HR | 8 | 2016, 2017 |
| PHY 430 W3FE | PR | 1 | 2018 |
| PHY 440 W3FE | PR | 3 | 2018 |
| PHY 480 W3FE | HR | 6 | 2017 to 2019 |
| PHY 500 W3FE | HR | 2 | 2019 |
| PHY 580 W3FE | HR | 2 | 2019 |
| ST 4946GLB2 | PR | 13 | 2016 to 2019 |
Least square means1 of nematode resistance groups for lint yield, Meloidogyne incognita eggs and second-stage juveniles (J2)_
| Analysis for full data set | Omitting data for older cultivars4 | |||||||
|---|---|---|---|---|---|---|---|---|
| R group2 | Lint yield (kg/ha) | Eggs/500 cm3 soil | LE3 | J2/200 cm3 soil | Lint yield (kg/ha) | Eggs/500 cm3 soil | LE | J2/200 cm3 soil |
| HR-PHY | 1,327 ab2 | 154 | 1.5 d | 27 b | 1,460 a | 340 | 1.4 d | 27 b |
| PR-PHY | 1,314 ab | 2,071 | 2.1 c | 59 b | 1,330 ab | 2,193 | 2.1 c | 32 b |
| NR-DP | 1,234 b | 1,456 | 2.4 bc | 76 b | 1,227 b | 1,880 | 2.4 bc | 37 b |
| PR-FM/ST | 1,396 a | 3,310 | 2.7 b | 146 b | 1,396 a | 3,283 | 2.6 b | 73 b |
| None | 1,243 b | 7,871 | 3.3 a | 336 a | 1,244 b | 7,867 | 3.2 a | 168 a |