Fecundity and development rate of the bird cherry-oat aphid, Rhopalosiphum padi (L) (Hom.: Aphididae) on six wheat cultivars

Sedigheh Taheri, Jabraeil Razmjou and Nowzar Rastegari
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Sedigheh Taheri: Diseases Department, Plant Protection Department, Fars Research Center for Agriculture and Natural Resources, Zarghan, Iran
Jabraeil Razmjou: Diseases Department, Plant Protection Department, Fars Research Center for Agriculture and Natural Resources, Zarghan, Iran
Nowzar Rastegari: Plant Pest &

Plant Protection Science, 2010, vol. 46, issue 2, 72-78

Abstract: Rhopalosiphum padi is a polyphagous species with a nearly worldwide distribution. Biological parameters of this aphid on six commonly grown wheat cultivars in the Fars province including Chamran, Darab2, Shiraz, Ghods, Marvdasht and Niknezhad were investigated at the two-leaf stage of wheat. The experiments were carried out at 24 ± 5°C, 65 ± 5% R.H. and a photoperiod of 14:10 h (L:D) in a greenhouse. The number of nymphs per female of R. padi was 62.05, 55.84, 49.89, 47.63, 42.76 and 40.65 (nymphs/female) on Niknezhad, Shiraz, Ghods, Marvdasht, Chamran, and Darab2, respectively. Also, the highest and the lowest rm values of this aphid were obtained on Niknezhad (0.381 per day) and Darab2 (0.328 per day), respectively. In addition, other population growth indices were estimated. In general, a high level of antibiosis in Darab2 compared with the other tested cultivars may decrease the population density of R. padi on wheat and also cause a suppression of cereal viruses (e.g. BYDV) and reduce the pesticide application to wheat fields of Iran.

Keywords: Rhopalosiphum padi; wheat cultivars; biological parameters (search for similar items in EconPapers)
Date: 2010
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpps:v:46:y:2010:i:2:id:10-2009-pps

DOI: 10.17221/10/2009-PPS

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