Effects of Fusarium Wilt on Cotton Cultivars with and without Meloidogyne Incognita Resistance in Fields
© 2022 Terry A. Wheeler, Jessica Dotray and Cecilia Monclova-Santana, published by Sciendo.
| Veröffentlicht in: | Journal of nematology. - 1969. - 54(2022), 1 vom: 13. Feb., Seite 20220017 |
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| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2022
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| Zugriff auf das übergeordnete Werk: | Journal of nematology |
| Schlagworte: | Journal Article Fusarium oxysporum f. sp. vasinfectum Fusarium wilt Gossypium hirsutum Meloidogyne incognita cotton management resistance |
| Zusammenfassung: | © 2022 Terry A. Wheeler, Jessica Dotray and Cecilia Monclova-Santana, published by Sciendo. Cotton (Gossypium hirsutum) cultivar trials were conducted in four fields (6 trials total) with Meloidogyne incognita (Mi)/Fusarium oxysporum f. sp. vasinfectum (Fov) from 2019 to 2021. Cotton cultivars were divided into groups based on company/Mi resistance: S = susceptible to Mi; R-FM, R-DP, and R-PHY = resistance to Mi in FiberMax®, Deltapine®, and Phytogen® cultivars, respectively; ST 4946GLB2 (moderate resistance to Mi and observed field tolerance to Fov); and ST 5600B2XF (resistance to Mi). The S and R-FM groups had the highest transformed Mi densities LOG10(Mi + 1) (LMi = 3.22 and 3.01, respectively), while R-DP and R-PHY had the lowest LMi (2.21 and 1.85, respectively). Plant mortality (%) was higher for R-DP (28.1%) than for all other groups except ST 5600B2XF (24.8%). Mi-susceptible cultivars averaged 23.3% mortality. Relative yield (0-1 scale) was higher for ST 4946GLB2 (0.706) and R-PHY (0.635) than for R-DP (0.530), ST 5600B2XF (0.578), and S (0.491). All groups except R-DP averaged higher relative yield than the susceptible cultivars. ST 4946GLB2 had the lowest mortality (16.5%) and highest relative yield, while R-DP cultivars had the highest mortality and no difference in relative yield from the Mi-susceptible cultivars. The group of R-DP cultivars had excellent Mi resistance but were susceptible to Fov. No cultivars were identified with high resistance to Fov |
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| Beschreibung: | Date Revised 20.09.2022 published: Electronic-eCollection Citation Status PubMed-not-MEDLINE |
| ISSN: | 0022-300X |
| DOI: | 10.2478/jofnem-2022-0017 |