Penetration of Soybean Roots by Soybean Cyst Nematode at High Soil Water Potentlals

Johnson, Ashanti; Scott, H. D.; Riggs, R. D.

doi:10.2134/agronj1993.00021962008500020045x

Cited by 13 publications

(6 citation statements)

References 7 publications

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“…Other reports of SCN effects on plant growth have been variable. Shoot and/or root biomass of soybean grown in SCN-infested soil has been documented to be lower than (Alston et al 1991;Chen et al 1995;Yang et al 2002), equal to (Browde et al 1994;Johnson et al 1993), or higher than (Browde et al 1994;Yang et al 2002) plants without the nematode. SCN impacts plant growth by inducing morphological and physiological changes in the root of a susceptible plant that alter normal plant processes (Noel 2004).…”

Section: Resultsmentioning

confidence: 94%

“…Although the classic symptoms of SCN infection include soybean stunting and chlorosis (Noel 2004), significant yield losses can occur in the absence of aboveground symptoms (Wang et al 2003). The extent to which foliar symptoms are expressed can be influenced by factors such as soil fertility (Smith et al 2001) and soil moisture (Johnson et al 1993). Thus, our inability to detect differences in plant biomass may have been the result of the adequate soil moisture and fertility provided in this greenhouse environment.…”

Section: Resultsmentioning

confidence: 99%

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Influence of Intraspecific Henbit (Lamium amplexicaule) and Purple Deadnettle (Lamium purpureum) Competition on Soybean Cyst Nematode Reproduction

Creech¹,

Faghihi²,

Ferris³

et al. 2007

Weed sci.

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A greenhouse study was conducted to determine the effect of henbit and purple deadnettle density on weed biomass accumulation and soybean cyst nematode (SCN) reproduction. SCN did not impact shoot or root dry weight of purple deadnettle, henbit, or soybean. Foliar and root biomass of henbit and purple deadnettle were comparable but the biomass per stem was higher for purple deadnettle. Shoot and root biomass per pot of henbit and purple deadnettle at corresponding plant densities were statistically similar and were generally higher with increasing plant density. Henbit produced a greater number of stems than purple deadnettle and the least number of stems for both species existed at low densities. Purple deadnettle allowed for more SCN reproduction than did henbit. Weed densities also influenced SCN cyst and egg production but the results were species dependent. The highest SCN reproduction per pot was supported at low to moderate densities of purple deadnettle but at moderate to high densities of henbit. These results suggest that purple deadnettle should be more aggressively managed than henbit in management programs for SCN, but that henbit, especially at high densities, can support SCN reproduction at levels near those of purple deadnettle.

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Section: Resultsmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 99%

Influence of Intraspecific Henbit (Lamium amplexicaule) and Purple Deadnettle (Lamium purpureum) Competition on Soybean Cyst Nematode Reproduction

Creech¹,

Faghihi²,

Ferris³

et al. 2007

Weed sci.

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“…M. incognita and Hoplolaimus columbus prefer to soils with high sand content ( Koenning et al, 1996 ; Lewis and Smith, 1976 ). Soil water regimes, related with soil textures and water contents affect the penetration of the soybean cyst nematode (SCN) and the tolerance of susceptible soybean cultivars to SCN ( Johnson et al, 1993b , 1994 ). However, little study has been made on the reasons of heavy infestation and sever damages of Meloidogyne spp.…”

Section: Discussionmentioning

confidence: 99%

Effects of Soil Textures on Infectivity of Root-Knot Nematodes on Carrot

Kim

Seo

Kim

et al. 2017

The Plant Pathology Journal

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This study was conducted to examine infectivity (penetration and gall and egg-mass formations) of the root-knot nematodes, Meloidogyne incognita and M. hapla, on carrots grown in soil conditions of 5 different soil textures consisting of bed-soil (b) and sand (s) mixtures (b-s mixtures) at the ratios of 10:0, 7:3, 5:5, 3:7, and 0:10. For M. incognita, the nematode penetration rates in b-s of 0:10 (100% sand) were significantly higher than in the other b-s mixtures, more greatly at 2 and 5 days after inoculation than at 10 DAI, while no significant differences in the penetration rates were mostly shown for M. hapla at the above DAI. However, for both nematodes, gall and egg-mass formations were remarkably increased in the b-s mixture of 0:10, compared to the other b-s mixtures, which is coincided with the general aspects of severe nematode infestations in sandy soils. This suggests the increased gall and egg-mass formations of M. incognita should be derived from the increased penetration rates in the sandy soil conditions, which provide a sufficient aeration due to coarse soil nature for the nematodes, leading to their mobility increased for the enhanced root penetration. For M. hapla, it is suggested that the sandy soil conditions affect positively on the healthy plant growth with little accumulation of the inhibitory materials and sufficient aeration, enhancing the nematode growth and feeding activities. All of these aspects provide information reliable for the development screening techniques efficient for the evaluation of the nematode resistance in the breeding programs.

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“…Early observations indicated that the effects of H. glycines on soybean growth were highly variable in the field, with no clear trend (3). In field microplots, H. glycines appeared to reduce plant height and biomass accumulation, but no significant reductions of these growth parameters were found in the field under different irrigation regimes (7). Increases in population densities of H. glycines were reported to reduce the number of pods in field microplots (14,17).…”

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confidence: 95%

Soybean Cyst Nematode Reduces Soybean Yield Without Causing Obvious Aboveground Symptoms

Wang¹,

Niblack²,

Tremain

et al. 2003

Plant Disease

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Field experiments were conducted at locations in northern and southern Illinois, central Iowa, and central Missouri from 1997 to 1999 to investigate the effects of Heterodera glycines on soybean growth, development, and yield. A wide range of infestation levels was present at all locations. Two locally adapted cultivars, one resistant to H. glycines, were grown at each location. Cultivars were planted in alternating four-row strips with 76 cm between rows. For each cultivar, 20 1-m-long single-row plots were sampled every 2 weeks starting 4 weeks after planting. Infection by H. glycines reduced plant height and leaf and stem weight on the resistant cultivars in the first 12 weeks after planting, and delayed pod and seed development 12 to 14 weeks after planting. Biomass accumulation was not reduced on the susceptible cultivars until 10 weeks after planting; reduction in pod and seed development occurred throughout the reproductive stages. Susceptible cultivars produced significantly lower yields than resistant cultivars, but the yield reductions were not accompanied by visually detectable symptoms.

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Penetration of Soybean Roots by Soybean Cyst Nematode at High Soil Water Potentlals

Cited by 13 publications

References 7 publications

Influence of Intraspecific Henbit (Lamium amplexicaule) and Purple Deadnettle (Lamium purpureum) Competition on Soybean Cyst Nematode Reproduction

Influence of Intraspecific Henbit (Lamium amplexicaule) and Purple Deadnettle (Lamium purpureum) Competition on Soybean Cyst Nematode Reproduction

Effects of Soil Textures on Infectivity of Root-Knot Nematodes on Carrot

Soybean Cyst Nematode Reduces Soybean Yield Without Causing Obvious Aboveground Symptoms

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