Wheat stem sawfly (Cephus pygmaeus L.) damage; impacts on grain yield, quality and marketing prices in Anatolia

Özberk, İrfan; Atlı, Ayhan; Yücel, Abuzer; Özberk, Fethiye; Çoşkun, Yalçın

doi:10.1016/j.cropro.2005.03.006

Cited by 19 publications

(10 citation statements)

References 4 publications

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“…The damage wheat stem sawfly larvae can exert on a plant is limited, and the decrease in fitness they cause does not exceed 25% ( Holmes, 1977;Morrill et al , 1992;Ozberk et al , 2005 ). Even though many eggs can be placed within a stem, cannibalism occurs among larvae and only one can complete its life cycle in each stem ( Wallace & McNeal, 1966 ).…”

Section: Figurementioning

confidence: 99%

“…This coincides with the grain fill period, after anthesis (Talbert et al , 2001), when the number of seeds per plant is fairly well established but any stress that will reduce the rate of photosynthesis can affect the weight of the seed (Rawson, 1970; Darwinkel, 1978; Bruckner & Frohberg, 1987). Reduction in wheat ear weight due to larval feeding has been reported to reach 22%, depending on the cultivar and the environmental growing conditions (Holmes, 1977; Morrill et al , 1992; Ozberk et al , 2005). In species other than wheat, yield reduction was studied by Youtie and Johnson (1988) who found a net reduction of 8% in seed weight of native basin wildrye infested by wheat stem sawfly.…”

Section: Introductionmentioning

confidence: 99%

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Wheat stem sawfly‐infested plants benefit from parasitism of the herbivorous larvae

Buteler

Weaver

Miller

2008

Agri and Forest Entomology

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1 Parasitoids Bracon cephi (Gahan) and Bracon lissogaster Muesebeck and their herbivorous host the wheat stem sawfly Cephus cinctus Norton, a pest of wheat Triticum aestivum , were investigated for yield in T. aestivum grown in the field. 2 Wheat stem sawfly-infested stems had a higher yield potential than uninfested stems. However, final reproductive output was not significantly different between ears on infested stems that supported complete larval development compared with ears on uninfested stems. 3 Stems containing parasitized larvae and stems containing larvae that died before completing their development had a higher mean number of seeds and seed weight, when accounting for number of fertile spikelets of each ear, than either infested with live larvae and uninfested stems. 4 The results obtained suggest that larval feeding prevented infested stems from attaining their yield potential, and that the negative impact of the pest on wheat yield was reduced when late instar sawfly larvae were parasitized. Even though some feeding occurs before parasitism, this early damage has a comparatively low impact on yield. 5 This is the first study to show a yield benefit and enhanced plant fitness due to the wheat stem sawfly parasitoids B. cephi and B. lissogaster . This results from the maintenance of increased seed number and seed weight in the higher yielding stems that are preferentially infested by this pest.

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Section: Figurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Wheat stem sawfly‐infested plants benefit from parasitism of the herbivorous larvae

Buteler

Weaver

Miller

2008

Agri and Forest Entomology

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“…In a European study, Ozberk et al (2005) concluded that yield losses from Cephus pygmaeus (L.) would be $69 ? ha 21 for durum and bread wheat.…”

Section: Plant Injury Caused By Wheat Stem Sawfly Larvaementioning

confidence: 99%

Biology and integrated management of wheat stem sawfly and the need for continuing research

et al. 2011

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The wheat stem sawfly, Cephus cinctus Norton (Hymenoptera: Cephidae), is historically one of the most important economic insect pests in the northern Great Plains of North America. Within this geographical region, the areas subjected to greatest attack are southern Alberta and Saskatchewan, southwestern Manitoba, eastern and northern Montana, North Dakota, northern South Dakota, and western Minnesota. Cumulative grain-yield losses and annual economic losses associated with this pest can exceed 30% and $350 million, respectively. Solid-stemmed cultivars of common wheat, Triticum aestivum L. (Poaceae), tolerant of infestation, are critical for C. cinctus management, but outbreaks of this pest continue to occur even after six decades of cultivar development. Furthermore, chemical control (a primary control option for other cereal (Poaceae) insect pests) has proven ineffective; this underscores the need to integrate resistant cultivars into a comprehensive integrated pest management program. We provide overviews of wheat stem sawfly biology, recent advances in applied research, the efficacy and integration of cultural and biological management strategies, and future directions for global research activities to manage wheat stem sawfly.

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“…Genotypes were planted in 1.0 m plots in three replicated randomized blocks during each crop cycle. Average percentage of stem cut in the three reps was taken as a measure of resistance; lines with less than 5% stem cut are considered as resistant, given that 10% is considered the economic threshold (Özberk et al 2005 ). The material was scored just before harvest.…”

Section: Methodsmentioning

confidence: 99%

Resistance to insect pests in wheat—rye and Aegilops speltoides Tausch translocation and substitution lines

Crespo‐Herrera

Singh

Sabraoui³

et al. 2019

Euphytica

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Various insect pests attack wheat (Triticum aestivum L.) that can cause significant grain yield losses to the crop. Farmers usually depend on pesticides, however, smallholder farmers often have limited and ill-timed access to control methods, including insecticides. Host plant resistance is an alternative to protect grain yield and reduce costs to farmers. Three of the most serious pests of wheat are Diuraphis noxia (Kurdjumov), Mayetiola destructor (Say), and Cephus pygmeaus L. These pests occur in most of the wheat growing areas. However, they are of high importance in North Africa and West Asia. The aim of this study was to evaluate a set of wheat-alien translocations for resistance against D. noxia, M. destructor and C. pygmeaus. Genotypes of this germplasm set have already been reported to carry resistance against certain wheat aphid species. Genotypes 1RS am .1AL and MA1S.1RL e (1B), displayed high levels of resistance against D. noxia and C. pygmeaus, respectively. While three genotypes showed resistance reaction against M. destructor: 1R e (1D), 7A.7S-L5, and 7A.7S-Gb5. Except for the resistant genotype to C. pygmeaus, the other four genotypes were previously reported to carry resistance against Sitobion avenae Fabricius, Rhopalosiphum padi L. and Schizaphis graminum (Rondani). These five wheat-alien translocations are currently being used in the bread-wheat breeding programs at CIMMYT and ICARDA to transfer the multiple pest resistance in elite germplasm.

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Wheat stem sawfly (Cephus pygmaeus L.) damage; impacts on grain yield, quality and marketing prices in Anatolia

Cited by 19 publications

References 4 publications

Wheat stem sawfly‐infested plants benefit from parasitism of the herbivorous larvae

Wheat stem sawfly‐infested plants benefit from parasitism of the herbivorous larvae

Biology and integrated management of wheat stem sawfly and the need for continuing research

Resistance to insect pests in wheat—rye and Aegilops speltoides Tausch translocation and substitution lines

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