Scots pine has been shown to produce a volatile bouquet that attracts egg parasitoids in response to oviposition of the herbivorous sawfly Diprion pini. Previous analyses of headspace volatiles of oviposition-induced pine twigs revealed only quantitative changes; in particular, the sesquiterpene (E)-beta-farnesene was emitted in significantly higher quantities by oviposition-induced pine. Here ...

The exotic wood-boring pest, emerald ash borer (EAB), Agrilus planipennis Fairmaire (Coleoptera: Buprestidae), has been threatening North American ash (Fraxinus spp.) resources, this being recognized since its first detection in Michigan, USA and Ontario, Canada in 2002. Ash trees are killed by larval feeding in the cambial region, which results in disruption of photosynthate and nutrient trans...

chamomile is a medicinal plant with high economic value. in this research, 20 chamomile ecotypes collected from different regions of iran were evaluated for genetic and chemical diversity. dna was extracted by ctab and polymerase chain reaction was performed using 13 rapd markers. essential oils extraction was performed by water distillation using clevenger system. components of the essential o...

The antennal responses of codling moth females, Cydia pomonella, to volatiles from apple branches with green fruits were recorded by electroantennography coupled to gas chromatography. The antennae strongly responded to 4,8-dimethyl-1,3(E),7-nonatriene, linalool, beta-caryophyllene, (E)-beta-farnesene, germacrene D, (Z,E)-alpha-farnesene, (E,E)-alpha-farnesene and methyl salicylate. These compo...

Superficial scald is a postharvest disorder of apples related to increased ethylene production in stored fruit which leads α-farnesene accumulation and oxidation. Ionizing irradiation inhibits has been shown reduce superficial scald, but this phenomenon not explored at the molecular level. The goal study was determine effect on gene expression enzymes ‘Granny Smith’ apples. Irradiation 310 Gy c...

Ginger (Zingiber officinale Roscoe) rhizomes are mostly used as spice and medicine due to their high aroma intensity medicinal bioactive compounds. However, the volatile compounds of ginger, partly responsible for its properties, can be affected by pretreatment, drying method, extraction processes employed. The objective this study was assess effects pretreatment on yellow ginger variety at nin...

ABSTRACT Rice blast caused by the Magnaporthe oryzae pathogen is a major disease in this crop, and may cause devastating losses. This study aimed to investigate profile of Waitea circinata mycorrhiza volatile compounds antagonism M. oryzae, under different growth periods temperatures, using completely randomized design. Volatile organic were extracted headspace solid phase microextraction analy...

Male and female codling moths, Cydia pomonella (L.) (Lepidoptera: Tortricidae) responded to fruit-baited traps in orchards. Numbers of codling moths trapped with immature uninfested apples (Malus spp.), immature apples infested with larval codling moth, fresh ripe apples, stored ripe apples, or fresh ripe pears (Pyrus spp.) were signiÞcantly greater than in unbaited traps. Greatest numbers of c...

Agricultural and medical insect pests are damaging edible crops, spreading diseases, harming non-target fauna flora. Prominent polyphagous harass farmers in the agronomy sector, causing uncountable revenue corrosion. Ecofriendly phytopesticides can avoid consequences of bulk usage synthetic chemicals. In this study, toxic effect on third-instar larvae four different species (Spodoptera litura, ...