02976nas a2200289 4500008004100000022001400041245010200055210006900157260007400226300001200300490000700312520202900319653001302348653001302361653001102374653000802385653001502393653001502408653003302423653002602456653001402482100001102496700001302507700002102520700001702541856012802558 2005 eng d a1386-614100aResponse of trichogramma chilonis to infochemicals: an SEM and electrophysiological investigation0 aResponse of trichogramma chilonis to infochemicals an SEM and el aVAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDSbSPRINGERcJUN a429-4470 v503 a

The external morphology and peripheral olfactory responses of antennal chemoreceptors of Trichogramma chilonis Ishii (Hymenoptera:Trichogrammatidae) to host related stimuli were examined by SEM and EAG technique respectively. The antennae of male and female T. chilonis reveal strong sexual dimorphism in structure as well as in types, density and distribution of individual sensillar types. The female antennae are characterized by the presence of a single uniporous sensilla on the apical tip of the dome and numerous multiporous pitted sensilla. Sensilla common to both males and females include the multiporous plate sensilla, the peg sensilla and trichoid sensilla. Differences between males and females occur with respect to their EAG profiles to 22 chemicals commonly found in plants viz., hexanal, β-pinene, citronellal, terpinene, citronellol, phytol, caryophyllene, R-(+)-limonene, linalool, carvacrol, cis-3-hexen-1-ol, ethanol, α-pinene, trans-2-hexanal, α-phellandrene, amyl acetate, cineole, quinolene, S-(-)limonene, β-myrcene, carvone, terpineol; hexane leaf extracts of three host plants of Helicoverpa armigera (cotton, chickpea and pigeon pea) and hexane scale extracts of adult males and females of H. armigera. Individually, the largest peak amplitudes in females were obtained with citronellal, phytol, caryophyllene, R-(+)-limonene, linalool, carvacrol and citronellol while in males citronellol, caryophyllene, linalool, R-(+)-limonene and amyl acetate caused the highest response. Among the different chemical classes, the largest peak amplitudes in females were obtained with oxygenated monoterpenes, while in males, fatty acid derivatives caused the highest response. In both males and females, the hydrocarbon monoterpenes caused the least response. Thus, the wide spectrum response of Trichogramma chilonis, to a wide group of chemicals belonging to different chemical classes, though varying, nevertheless suggests that using plant information enhances its parasitization efficiency.

10aantennae10aChickpea10acotton10aEAG10aparasitoid10apigeon pea10ascanning electron microscopy10aTrichogramma chilonis10aVolatiles1 aSen, A1 aRaina, R1 aJoseph, Mary, P.1 aTungikar, VB uhttp://library.ncl.res.in/content/response-trichogramma-chilonis-infochemicals-sem-and-electrophysiological-investigation-001857nas a2200241 4500008004100000022001400041245006800055210006800123260009900191300001000290490000800300520103900308653001001347653002601357653001301383653001401396100002201410700002501432700002301457700002001480700002101500856009401521 2012 eng d a0308-814600aGeographic variation in the flavour volatiles of alphonso mango0 aGeographic variation in the flavour volatiles of alphonso mango aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLANDbELSEVIER SCI LTDcJAN a58-660 v1303 a

Alphonso, one of the most popular cultivars of mango in India is known to exhibit geographic variation in the flavour of ripe fruits. To get chemical insight into this difference, volatiles were studied in the ripening fruits of Alphonso mangoes from three cultivation locations in India. Ripe fruits from Deogad had lower content of mono- and sesquiterpenes and higher content of lactones and furanones as compared to the fruits from Dapoli: whereas fruits from Vengurle had average quantities of these chemicals in comparison with Deogad and Dapoli fruits. This variation was clearly reflected as separate clustering of the localities in the Principal Component Analysis. The localities were indistinguishable from each other in terms of raw fruit volatiles. This study exemplifies a case of phenotypic plasticity; since the plants chosen were clonally propagated, such geographic variation in the volatiles can be attributed to varied abiotic conditions at these three localities. (C) 2011 Elsevier Ltd. All rights reserved.

10aMango10aPhenotypic plasticity10aRipening10aVolatiles1 aKulkarni, Ram, S.1 aChidley, Hemangi, G.1 aPujari, Keshav, H.1 aGiri, Ashok, P.1 aGupta, Vidya, S. uhttp://library.ncl.res.in/content/geographic-variation-flavour-volatiles-alphonso-mango-002000nas a2200265 4500008004100000022001400041245010900055210006900164260009900233300001200332490000800344520106400352653001301416653001201429653001001441653002001451653001301471653001401484100002501498700002201523700002301545700002001568700002101588856012501609 2013 eng d a0308-814600aSpatial and temporal changes in the volatile profile of alphonso mango upon exogenous ethylene treatment0 aSpatial and temporal changes in the volatile profile of alphonso aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLANDbELSEVIER SCI LTDcJAN a585-5940 v1363 a

Alphonso is a highly favoured and exported mango cultivar among the vast mango germplasm of India. Being a climacteric fruit, ethylene plays an important role in ripening of mango. For deeper understanding of effect of pre-climacteric ethylene treatment on volatile profiles of Alphonso mango, 26 volatiles were tracked through six ripening stages of pulp and skin of ethylene-treated and control Alphonso fruits. The study revealed accelerated ripening in terms of early appearance of ripening-specific compounds, lactones and mesifuran, upon ethylene treatment. While the level of lactones remained unaffected, the mesifuran level vastly increased upon ethylene treatment. Skin showed high terpene content while pulp had higher amount of lactones compared to skin. This work points towards involvement of ethylene as a natural hormone in the biosynthesis of lactones and furanones in naturally ripened fruits; whereas, an increase in the terpene level during ripening appears to be independent of ethylene. (C) 2012 Elsevier Ltd. All rights reserved.

10aEthylene10aFlavour10aMango10aPre-climacteric10aRipening10aVolatiles1 aChidley, Hemangi, G.1 aKulkarni, Ram, S.1 aPujari, Keshav, H.1 aGiri, Ashok, P.1 aGupta, Vidya, S. uhttp://library.ncl.res.in/content/spatial-and-temporal-changes-volatile-profile-alphonso-mango-upon-exogenous-ethylene-0