Effect of Introducing Nematode-Resistant Sweet Potato Cultivars on Crop Productivity and Nematode Density in Sweet Potato-Radish Double-Cropping Systems

Suzuki, Takayuki; Kobayashi, Tooru; Adachi, Katsuki; Mochida, Hideyuki; Iwahori, Hideaki; Tateishi, Yasushi; Uesugi, Kentaro

doi:10.1626/pps.15.48

Cited by 10 publications

(5 citation statements)

References 10 publications

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“…An extended fallow period can reduce levels of nematodes, however, this option is not always available for smallholder farmers, so the development of resistant varieties is the best option. There are numerous varieties showing tolerance or resistance to nematodes across PNG and the Pacific, however in other parts of the world resistance is not reported as commonly (Kokoa, 2001;Atungwu et al, 2012;Suzuki et al, 2012). Clark et al (2013) describes over 30 diseases of sweetpotato caused by a greater number of pathogens among which are at least 30 known sweetpotato viruses.…”

Section: Plant Parasitic Nematodesmentioning

confidence: 99%

Invertebrate pests and diseases of sweetpotato (Ipomoea batatas): a review and identification of research priorities for smallholder production

Johnson

Gurr

2016

Ann Appl Biol

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Sweetpotato has been the subject of little research worldwide compared with other major crop staples, and this is especially so for less developed countries where sweetpotato is critical for food security. This review synthesises information on plant protection issues that affect smallholder sweetpotato farmers in less developed countries to identify major issues and suggest research priorities. Though the pests and diseases of sweetpotato in less developed countries are largely common to industrialised systems, their relative importance differs and losses tend to be more severe as a result of differing agronomic practices and relative unavailability of management options and technical support that are important in developed countries. Smallholders are heavily reliant on cultural practices such as traditional forms of biological control using ants and livestock, fallowing and composting (sometimes with plant materials having biocidal properties). Crop protection methods that have been developed for use in sweetpotato production in developed countries, such as pathogen-tested planting material, early maturing varieties, pheromone trapping and pesticides are less accessible to, and relevant for, smallholders. Smallholders also typically harvest a given crop progressively which extends the period over which storage roots are potentially vulnerable to attack but reduces the risk of post-harvest losses. Human population growth in developing countries is leading to an increase in cropping intensity with shorter fallow periods and more years of continuous crops. This has the dual effect of depleting soil nutrients and increasing the potential for pest and pathogen build-up. Associated with this, the adoption of strategies to manage crop nutrition, such as not burning crop residues, promote carryover of pests and pathogen inocula. As a consequence of these factors, sweetpotato yield losses from diseases, especially viruses, and pests, particularly weevils, can be high. Climate change is likely to result in more frequent drought and this will increase losses caused by sweetpotato weevils that are favoured by dry conditions. This review of sweetpotato pests and their management options concludes with suggestions for some future research priorities including the combination of traditional practices that have pest management outcomes with relevant practices from industrial production that are able to be transferred or modified for use in smallholder production. Increased technical support for decision making and diagnostics, including molecular approaches that have scope for field use, will be important in reducing the burden imposed by biotic threats to this important global crop.

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Section: Plant Parasitic Nematodesmentioning

confidence: 99%

Invertebrate pests and diseases of sweetpotato (Ipomoea batatas): a review and identification of research priorities for smallholder production

Johnson

Gurr

2016

Ann Appl Biol

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“…Nematicides can lessen quality and yield damage from nematodes ( Johnson and Cairns 1971 , Nielsen and Sasser 1959 , Suzuki et al 2012 ). Treatment of a parasitic bacterium Pasteuria penetrans and preceding cropping of nematode resisting oat ‘Tachiibuki’ reduced density of nematodes ( Tateishi et al 2007 , 2008 ).…”

Section: Southern Root-knot Nematodementioning

confidence: 99%

“…These results may be because of invasion by new races. Suzuki et al (2012) indicated that southern root-knot nematodes decreased yield even in resistant sweetpotato cultivars ‘J-red’ and ‘Kyushu No. 139’ under high nematode density conditions.…”

Section: Southern Root-knot Nematodementioning

confidence: 99%

Review of major sweetpotato pests in Japan, with information on resistance breeding programs

et al. 2017

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Sweetpotato (Ipomoeae batatas (L.) Lam.) is an important food crop affected by several pests throughout the world, especially in tropical, subtropical, and temperate regions. Although Japan is relatively free from many serious sweetpotato pests, some pests, especially soil-borne pathogens, viruses, and insects such as plant-parasitic nematodes and weevils, cause severe damage in Japan. In this review, we describe the current status and management options for sweetpotato pests and diseases in Japan and review research related to sweetpotato breeding that can promote resistance to these problems. Furthermore, we describe methods to evaluate resistance to pests and disease used in sweetpotato breeding at the National Agriculture and Food Research Organization (NARO).

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“…M. javanica is considered the most important species in the Meloidogyne genus (Dhandaydham et al, 2008;Caillaud et al, 2008). One of the best management stratagies in an integrated pest management program is using nematode resistant cultivars (Suzuki et al, 2012). In some reports, barley is introduced as a resistant crop to the RKNs that can be sown in contaminated lands to reduce the population of RKNs (Karajeh et al, 2011;Harris and Maramorosch, 2013).…”

Section: Introductionmentioning

confidence: 99%

Genotypic and Biochemical Variation in the Response of Barley to the Root-Knot Nematode (Meloidogyne Javanica) at Seedling Stage

Bajestani

Moghadam

Aghnoum

et al. 2019

Pak. J. Phytopathol.

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The present study was conducted to evaluate 28 commercial cultivars and two promising breeding lines of barley in terms of resistance to Meloidogyne javanica nematode and to investigate the synthesis level of peroxidase, superoxide dismutase, catalase and polyphenol oxidase enzymes in different days after inoculation in greenhouse condition. Based on the results of evaluation, Jolge and Nimrouz cultivars were highly resistant, Rihan and Zarjow were very susceptible. The rest of the cultivars were ranked between these groups in resistant, moderately resistant and moderately susceptible groups. Comparison of the activity of antioxidant enzymes in highly resistance cultivars (Jolge and Nimrouz) and very susceptible cultivars (Rihan and Zarjow) roots showed that the activity of peroxidase, superoxide dismutase and polyphenol oxidase increased in the root of the highly resistant cultivars and decreased or remains unchanged in very susceptible cultivars. Nevertheless, catalase showed a decreasing trend after inoculation by nematodes in highly resistance cultivars, and in general; its level in resistant cultivars was less than susceptible cultivars. Therefore, changes in the activity of these enzymes can be attributed to different levels of resistance among these cultivars.

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Effect of Introducing Nematode-Resistant Sweet Potato Cultivars on Crop Productivity and Nematode Density in Sweet Potato-Radish Double-Cropping Systems

Cited by 10 publications

References 10 publications

Invertebrate pests and diseases of sweetpotato (Ipomoea batatas): a review and identification of research priorities for smallholder production

Invertebrate pests and diseases of sweetpotato (Ipomoea batatas): a review and identification of research priorities for smallholder production

Review of major sweetpotato pests in Japan, with information on resistance breeding programs

Genotypic and Biochemical Variation in the Response of Barley to the Root-Knot Nematode (Meloidogyne Javanica) at Seedling Stage

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