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

Abstract

Taheri S., Razmjou J., Rastegari N. (2010): Fecundity and development rate of the bird cherry-oat aphid, Rhopalosiphum padi (L) (Hom.: Aphididae) on six wheat cultivars. Plant Protect Sci., 46: 72-78.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 r m 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.

Implications of Some Constant Temperatures on Certain Biological Aspects of the Grapevine Aphid, Aphis illinoisensis Shimer (Homoptera:Aphididae)

“…Previous and present results suggest that, the R o values vary according to the aphid species and biotypes, temperature degrees and / or cultivars & experimental methods. These differences in the net reproductive rate may have been caused by host plant effect as well as possibly aphid species and biotype (Tsai and Wanga, 2001;Özgökçe and Atlihan, 2005;Razmjou et al, 2006;Mirmohammadi et al, 2009;Taheri et al, 2010 andJahan et al, 2014). Our results show that R o and r m of the grapevine aphid on "Superior" grape variety ranged from 1.30 to 6.30 and 0.144 to 0.026, respectively, confirming the resistance of the noted variety to the aphid.…”

Biological Performance, Development and Life Table of Bird Cherry-Oat Aphid Rhopalosiphum padi (L) (Hemiptera: Aphididae) on some Egyptian Wheat Cultivars

“…The most reduction in yield was caused by feeding by sucking the sap and depriving the plant of nutrients during the seedling stage. The loss of yield could be reach up to 60% if the mean density of aphids reached about 10-20 aphids per tiller (Taheri et al, 2010 andPapp andMesterhazy, 1993).…”

BIOLOGICAL ASPECTS AND THERMAL REQUIREMENTS OF THE BIRD CHERRY-OAT APHID, Rhopalosiphum padi (LINNAEUS), REARED ON WHEAT SEEDLINGS

“…The development, survival and reproductive potential of R. padi were investigated by Abdel-Rahman et al (2002), they found that 24ºC was the optimum temperature. It completes its life cycle on various hosts particularly maize, barley, oats and wheat (Taheri et al, 2010).…”