Potato plant variety affects the performance and oviposition preference of Phthorimaea operculella Zeller (Lepidoptera: Gelechiidae)

2021 ◽  
Author(s):  
Mengdi Zhang ◽  
Junjie Yan ◽  
Abid Ali ◽  
Yulin Gao
Keyword(s):  
Potato Plant ◽  
Oviposition Preference ◽  
Phthorimaea Operculella ◽  
Plant Variety

Efficacy of some chemical insecticides and plant extracts combined with Bacillus thuringiensis against Phthorimaea operculella

2021 ◽  
Author(s):  
Fereshteh Khorrami ◽  
Asmar Soleymanzade
Keyword(s):  
Bacillus Thuringiensis ◽  
Methanolic Extract ◽  
Oviposition Preference ◽  
Probit Analysis ◽  
Phthorimaea Operculella ◽  
Hatching Rate ◽  
Methanolic Extracts ◽  
The World ◽  
Chemical Pesticides ◽  
Antagonistic Interactions

Abstract Phthorimaea operculella (Zeller, 1873) is one of the most damaging pests of potatoes in the world. Since the chemical pesticides play a key role in managing of potato tuber moth (PTM), the present study was conducted to assess the efficacy of Proteus®, Takumi®, Avaunt®, Dorsban®, Decis®, Consult® and Vertimec® against neonate larval penetration and one-day-old eggs of P. operculella. But adverse effects of chemical insecticides, actuated researchers to seek secure tools such as medicinal plants and biopesticides like Bacillus thuringiensis Berliner, 1715 for pest managements. Hence, we also examined toxicity of savory, ziziphora and cumin methanolic extracts against the pest under laboratory conditions. We also surveyed the synergistic/antagonistic interactions between the most effective insecticide and methanolic extract with Bt against PTM. Our results showed that both Vertimec® and savory synergized the performance of Bt against neonate larval penetration of P. operculella. Probit analysis of insecticides and methanolic extracts demonstrated that Vertimec® and Takumi® had high toxicities to the neonate larval penetration of PTM which exhibited LC50 values equivalent to 7.09 ppm and 0.008 g L−1, respectively. Savory was the most effective extract against larval penetration and hatching rate of the pest (LC50 = 440.36 and 635.93 ppm, respectively). Oviposition preference demonstrated that Vertimec® and Decis® exhibited inhibitory ovipositional effects against P. operculella.

scholarly journals Fumigant Toxicity and Oviposition Deterrent Activity of Volatile Constituents from Asari Radix et Rhizoma against Phthorimaea operculella (Lepidoptera: Gelechiidae)

2020 ◽  
Vol 20 (6) ◽  
Author(s):  
Mei Wu ◽  
Yan Xiong ◽  
Rui Han ◽  
Wenxia Dong ◽  
Chun Xiao
Keyword(s):  
Active Ingredient ◽  
Potato Plant ◽  
Phthorimaea Operculella ◽  
Oviposition Deterrent ◽  
Deterrent Effect ◽  
Fumigant Toxicity ◽  
Volatile Constituents ◽  
Asarum Heterotropoides ◽  
And Control ◽  
Deterrent Activity

Abstract Phthorimaea operculella (Zeller) is a worldwide pest of potato. Plant-borne chemicals would be potential alternatives of synthetic chemical fumigants against P. operculella in the storage. Asari Radix et Rhizoma is derived from the dry roots and rhizomes of Asarum heterotropoides Fr. Schmidt var. mandshuricum, A. sieboldii Miq. var. seoulense, or A. sieboldii. In this study, fumigant toxicity and oviposition deterrent of volatile constituents from ARR, δ-3-carene, γ-terpinene, terpinolene, eucarvone, 3,5-dimethoxytoluene, and methyleugenol were tested against P. operculella. The preliminary verification of preventive and control effects of eucarvone, 3,5-dimethoxytoluene and methyleugenol on P. operculella was carried out by simulating warehouse experiments. The results indicated that the six compounds above had fumigation toxic effects on the adults and eggs of P. operculella. Among them, δ-3-carene, γ-terpinene, and terpinolene had weaker fumigation effects than those of eucarvone, 3,5-dimethoxytoluene, and methyleugenol. The LC50 values of eucarvone, 3,5-dimethoxytoluene, and methyleugenol against adult P. operculella were 1.01, 1.78, 1.51 mg/liter air, respectively. The LC50 values against egg P. operculella were 1.09, 0.55, 0.30 mg/liter air, respectively. The oviposition deterrent experiment showed that only methyleugenol (at 5 and 1 mg/ml) and eucarvone (5 mg/ml) had a substantial oviposition deterrent effect. The simulated warehouse experiment verified that methyleugenol, eucarvone, and 3,5-dimethoxytoluene protected potatoes from P. operculella and demonstrated that methyleugenol had the best preventive and control effects. It was concluded that methyleugenol was the active ingredient with the most potential in the volatiles from ARR on P. operculella control and merit further study as botanic fumigant.

DIRECTIONS OF PERFECTION OF LEGISLATION OF UKRAINE ABOUT PROTECTION OF RIGHTS ON THE PLANT VARIETY

2019 ◽  
Vol 3 ◽  
pp. 77-80
Author(s):  
Ye.F. Bobonych ◽  
◽  
A.L. Kovchi ◽  
O.M. Komorna ◽  
◽  
...  
Keyword(s):  
Plant Variety

Cloning and Expression of Three Genes Involved in Chlorophyll Biosynthesis at Different Albescent Stages of Tea Plant Variety "Baiye 1"

2015 ◽  
Vol 41 (2) ◽  
pp. 240 ◽  
Author(s):  
Chun-Lei MA ◽  
Ming-Zhe YAO ◽  
Xin-Chao WANG ◽  
Ji-Qiang JIN ◽  
Jian-Qiang MA ◽  
...  
Keyword(s):  
Chlorophyll Biosynthesis ◽  
Tea Plant ◽  
Cloning And Expression ◽  
Plant Variety

Influence of Stem Diameter on Oviposition Preference of the Alfalfa Weevil and Its Importance in Breeding for Resistance 1

Crop Science ◽  
1967 ◽  
Vol 7 (5) ◽  
pp. 428-430 ◽  
Author(s):  
B. L. Norwood ◽  
D. K. Barnes ◽  
R. S. VanDenburgh ◽  
C. H. Hanson ◽  
C. C. Blickenstaff
Keyword(s):  
Oviposition Preference ◽  
Stem Diameter ◽  
Alfalfa Weevil ◽  
Breeding For Resistance
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