Pathogenicity of Pratylenchus brachyurus and Pythium graminicola to Sugarcane

Koike, H.; Román, Jessé

doi:10.1094/phyto-60-1562

Cited by 3 publications

(2 citation statements)

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“…In Puerto Rico the fu ngus Pythium graminicola Subr. has been found in association with nematodes apparently aggravating the damage to the root system caused by nematodes and vice versa (9). Apt and Koike (4) demonstrated in greenhouse experiments in Hawaii, that there is an interaction between Meloidogyne incognita (Kofoid and White, 1919) Chitwood, 1949 and P. graminicola in relation to top growth, but not to root growth.…”

Section: Introductionmentioning

confidence: 99%

Título en español.

Valle-Lamboy

Ayala²

1980

JAUPR

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Both Meloidogyne incognita and Pratylenchus zeae, acting separately, reduced significantly the height of the primary shoots, fresh and dry weight of shoots and leaves, and fresh weight of roots of sugarcane cultivar PR 980. The combined action of both nematode species also caused a significant reduction of the height of the primary shoots, weight of shoots and dry weight of leaves, but the reduction was less than that produced in plants inoculated with only one species alone. Also, when both species of nematodes were present simultaneously, the number of internodes was significantly reduced, as compared to the control, but there was no difference in the reduction caused by both species when they were applied together or each one alone. Pythium graminicola reduced significantly the height of primary shoots. The combination of each nematode species with the fungus produced a highly significant reduction of the height of the primary shoots. The reduction was lower than that produced by each nematode species acting separately, but higher than that induced by the fungus alone. No significant reduction was caused by the three microorganisms acting in combination. The data suggested a possible acute antagonism among the two nematode species and the fungus. It also indicated that M. incognita, P. zeae and P. graminicola are pathogenic to sugarcane.

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Section: Introductionmentioning

confidence: 99%

Título en español.

Valle-Lamboy

Ayala²

1980

JAUPR

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“…Pathogenicity of Pratylenchus sp. has been demonstrated on several agricultural crops (2,3,4,6). Endo (4) demonstrated that P .…”

Section: Introductionmentioning

confidence: 99%

Interaction of Pratylenchus zeae with Four Soil Fungi on Sorghum

Bee-Rodríguez¹,

Ayala²

1969

JAUPR

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In a greenhouse experiment, a population consisting of 1,500 Pratylenchus zeae in 20-cm pots were pathogenic on sorghum, and suppressed top and root growth. Pronounced necrosis of the roots resulted. Top growth was retarded by combinations of P. zeae-Curvularia spp., P. zeae-Fusarium moniliforme, P. zeae-Rhizoctonia solani, and P. zeae-Macrophomina sp., and by F. moniliforme and R. solani, alone. All nematode-fungi combinations and all fungi alone suppressed root growth. The combination P. zeae-Curvularia spp. produced most damage. P. zeae-R. solani, Curvularia spp., and F. moniliforme produced severe necrosis of sorghum roots. An initial inoculum of 750 P. zeae in 20-cm pots was not pathogenic on sorghum in a second experiment. Only the combination of P. zeae-F. moniliforme affected the fresh root weights; dry root weights were retarded significantly by P. zeae-F. moniliforme and by F. moniliforme, alone. The intensity of necrosis also varied with the different inocula.

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Pratylenchus brachyurus (root-lesion nematode)

2022

CABI Compendium

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Pathogenicity of Pratylenchus brachyurus and Pythium graminicola to Sugarcane

Cited by 3 publications

References 1 publication

Título en español.

Título en español.

Interaction of Pratylenchus zeae with Four Soil Fungi on Sorghum

Pratylenchus brachyurus (root-lesion nematode)

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