The relationship between commercial cotton cultivars with varying Meloidogyne incognita resistance genes and yield
Publié en ligne: 29 juil. 2020
Pages: 1 - 8
Reçu: 17 févr. 2020
© 2020 Terry A. Wheeler et al., published by Sciendo.
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
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 |