Reactions of differential rice genotypes to African rice gall midge in West Africa

Nwilene, F. E.; Williams, C. T.; Ukwungwu, M. N.; Dakouo, D.; Nacro, Souleymane; Hamadoun, Abdoulaye; Kamara, S. I.; Okhidievbie, O.; Abamu, F.J.; Adam, Abdalla

doi:10.1080/09670870110103890

Cited by 28 publications

(26 citation statements)

References 6 publications

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“…In the farmer's field at Mae Moot, where infestation of the susceptible check variety SPT1 was 33%, 70% of the accessions were resistant. Variation in susceptibility to gall midge among rice varieties, and that susceptibility in rice depends on both the rice variety and gall midge biotype, are well documented (Kalode and Bentur 1989;Nwilene et al 2002). Rice varieties have also been reported to respond differently to gall midge from different locations in Thailand (Tayathum et al 1995).…”

Section: Gall Midge Resistance and Yieldmentioning

confidence: 94%

Complexity and adaptability of a traditional agricultural system: case study of a gall midge resistant rice landrace from northern Thailand

Oupkaew

Pusadee

Sirabanchongkran

et al. 2010

Genet Resour Crop Evol

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Adaptability of traditional agricultural systems is suggested by their success over time, but documentation of how this happens is rare. This paper shows how genetic diversity in a rice landrace enables rice farming system of northern Thailand to adapt to a constraint of an insect pest, microenvironments of mountainous landscape and people's different tastes in rice. Resistance to laboratory-reared gall midge varied among accessions the rice landrace Muey Nawng and gall midge populations. Higher rice yield in farmers' fields reflected adaptation to local environment as well as resistance to gall midge. Microsatellite variation of the accessions correlated negatively with their gall midge resistance, but there was also variation in heading time and endosperm starch. Presence of non-waxy endosperm in glutinous rice provides opportunity to select for rice that is cooked into non-glutinous rice preferred by minority groups who live at higher elevations, where the gall midge is emerging as a new threat, possibly because of climate change. These data show how genetic diversity of a rice landrace coupled with seed management by farmers enabled a rice farming system to adapt to the varied microenvironment of a mountainous landscape under the constraint of an insect pest and people's different tastes in rice.

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Section: Gall Midge Resistance and Yieldmentioning

confidence: 94%

Complexity and adaptability of a traditional agricultural system: case study of a gall midge resistant rice landrace from northern Thailand

Oupkaew

Pusadee

Sirabanchongkran

et al. 2010

Genet Resour Crop Evol

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“…The introduction of high‐yielding Asian O. sativa gradually replaced African varieties. In lowland rice systems, susceptibility to the African rice gall midge has become a problem to rice growers of West Africa, particularly in Burkina Faso, Mali, Nigeria, and Sierra Leone (Nwilene et al., 2002).…”

Section: Major Constraintsmentioning

confidence: 99%

Impact of integrated pest management on food and horticultural crops in Africa

Nwilene¹,

Nwanze

Youdeowei³

2008

Entomologia Exp Applicata

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In sustainable agricultural development, integrated pest management (IPM) can play a key role in the reduction of crop losses, thereby increasing productivity while minimizing environmental contamination and health hazards. In recent years, agricultural research and development partners have pioneered outstanding contributions in IPM, notably in varietal resistance against pests, biological control of alien invasive species, substitution of inorganic pesticides with biopesticides, new export market opportunities, and new tools in biotechnology. Success stories are not limited to these areas, but are also found in the areas of human capital development, information management, and participatory approaches. The potential of IPM to contribute to poverty alleviation and food security is, however, poorly realized in Africa due to a myriad of factors, including inadequate deployment of high-yielding crop varieties, harmful pesticide regimes, political instability, conflicts in social values and civil wars, inappropriate agricultural policies, biased global trade policies, lack of market information, and poor rural infrastructures. Few African countries have adopted IPM as the official national crop protection policy and there is no framework for resource allocation to support widespread promotion of research and training in IPM. This calls for reshaping and revisiting a number of policies related to food production and agricultural development, in order to encourage partnership and participation in the identification, analysis, advocacy, and follow-up of agricultural policy issues as well as public awareness of the effect of pests and diseases on food security and the environment.

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“…It is widely distributed in Burkina Faso (Bonzi 1980;Dakouo, Nacro, and Sie 1988), Nigeria (Ukwungwu, Winslow, and John 1989;Ukwungwu and Joshi 1992;Umeh, Joshi, and Ukwungwu 1992;Harris, Williams, Okhidievbie, LaSalle, and Polaszek 1999;Nwilene et al 2002), Mali (A. Hamadoun, personal communication), and Sierra Leone (Taylor, Fomba, Fanna, and Bernard 1995) and has been reported in an additional 16 sub-Saharan African countries (Alam, Zan, and Alluri 1985). The damage to rice plants is caused by the larvae which bore into the rice stem at the vegetative growth stages and cause rice leaves to grow into tubular galls called 'silver shoots' or 'onion leaves' that prevent panicles from bearing grains.…”

mentioning

confidence: 94%

“…Understanding interspecific relationships in agro-ecosystems and the roles these species play in crop protection are essential to the development of sustainable IPM strategies. Pending availability of high yielding rice varieties with durable resistance to AfRGM (Nwilene et al 2002), this study explored biodiversity as a functional principle of pest (AfRGM) management.…”

mentioning

confidence: 99%

Parasitoid biodiversity conservation for sustainable management of the African rice gall midge,Orseolia oryzivora(Diptera: Cecidomyiidae) in lowland rice

Nwilene¹,

Togola

Agunbiade³

et al. 2008

Biocontrol Science and Technology

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Reactions of differential rice genotypes to African rice gall midge in West Africa

Cited by 28 publications

References 6 publications

Complexity and adaptability of a traditional agricultural system: case study of a gall midge resistant rice landrace from northern Thailand

Complexity and adaptability of a traditional agricultural system: case study of a gall midge resistant rice landrace from northern Thailand

Impact of integrated pest management on food and horticultural crops in Africa

Parasitoid biodiversity conservation for sustainable management of the African rice gall midge,Orseolia oryzivora(Diptera: Cecidomyiidae) in lowland rice

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