Yellow and purple nutsedge and coffee senna as hosts of common plant nematodes in Florida
, and | Nov 24, 2020
About this article
Published Online: Nov 24, 2020
Page range: 1 - 9
DOI: https://doi.org/10.21307/jofnem-2020-094
Keywords
© 2020 Maria de Lourdes Mendes et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.
Figure 1:
Figure 2:
Figure 3:
Reproductive factor (Rf) and gall ratings of Meloidogyne arenaria, M. enterolobii, M. floridensis, M. hapla, M. incognita, and M. javanica on yellow and purple nutsedges, coffee senna, and a known susceptible host ‘AgriSet 334’ tomato in two trials of a greenhouse experiment 84 days after plants were inoculated with 5,000 eggs and second–stage juveniles.
| Nematode sp. | Y. nutsedge | P. nutsedge | C. senna | Tomato | Y. nutsedge | P. nutsedge | C. senna | Tomato |
|---|---|---|---|---|---|---|---|---|
| Rf | Gall index (0-5) | |||||||
| Trial 1 | ||||||||
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2.82 c BC1 | 4.76 b A | 0.00 d B | 7.75 a A | 0.00 b B | 0.00 b A | 0.00 b C | 5.00 a A |
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3.93 b B | 1.47 c B | 1.89 c A | 6.88 a A | 0.00 b B | 0.00 b A | 4.60 a A | 5.00 a A |
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5.27 ab A | 3.69 b A | 0.00 c B | 6.66 a A | 0.00 b B | 0.00 b A | 0.00 b C | 5.00 a A |
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– | 1.57 b B | 0.00 c B | 2.90 a B | – | 0.00 b A | 0.00 b C | 5.00 a A |
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2.40 b C | 1.61 b B | 0.08 c B | 6.73 a A | 0.00 c B | 0.00 c A | 4.00 b B | 5.00 a A |
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2.11 b C | 1.72 b B | 0.00 c B | 8.24 a A | 3.00 b A | 0.00 c A | 0.00 c C | 5.00 a A |
| Trial 2 | ||||||||
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3.10 c C | 6.75 b A | 0.00 d B | 49.30 a A | 0.00 b B | 0.00 b A | 0.00 b C | 5.00 a A |
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5.95 b B | 1.83 c B | 1.77 c A | 24.20 a C | 0.00 c B | 0.00 c A | 4.40 b A | 5.00 a A |
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8.93 b A | 6.06 b A | 0.00 c B | 35.99 a B | 0.00 b B | 0.00 b A | 0.00 b C | 5.00 a A |
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6.83 a AB | 1.59 b B | 0.00 b B | 7.80 a E | 0.80 b B | 0.00 c A | 0.00 c C | 5.00 a A |
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5.46 b B | 1.44 c B | 0.07 c B | 15.45 a D | 0.00 c B | 0.00 c A | 3.00 b B | 5.00 a A |
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8.97 b A | 2.28 c B | 0.00 c B | 32.05 a B | 1.80 b A | 0.00 c A | 0.00 c C | 5.00 a A |
Number of Belonolaimus longicaudatus extracted from soil collected from pots containing yellow nutsedge and purple nutsedge, and the known susceptible host ‘FX-313’ St. Augustinegrass, and the reproductive factor (Rf) in two trials of a greenhouse experiment 180 days after being inoculated with 120 mixed-life stages of B. longicaudatus per pot.
| Trial 1a | Trial 2 | |||
|---|---|---|---|---|
| Host | Nematodes/pot | Rf | Nematodes/pot | Rf |
| Yellow nutsedge | 21ab | 0.16a | 228a | 1.90a |
| Purple nutsedge | 23a | 0.19a | 375a | 3.12a |
| St. Augustinegrass | 25a | 0.21a | 389a | 3.24a |
Meloidogyne graminis second-stage juveniles (J2) and males per gram of root, per gram of tuber, and reproductive factor (Rf) on yellow nutsedge and purple nutsedge, and the susceptible host ‘Tifway’ bermudagrass in a greenhouse experiment 150 days after plants were inoculated with 4,000 J2.
| Host | J2/g root | Males/g root | J2/g tuber | Males/g tuber | Rfa |
|---|---|---|---|---|---|
| Yellow nutsedge | 26bb | <1b | 1b | <1b | 0.35b |
| Purple nutsedge | 240b | <1b | 5a | <1a | 2.48a |
| Bermudagrass | 509a | 24a | – | – | 3.64a |