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      Identification of a novel germplasm (Jor Lab L-9) of lemon grass(Cymbopogon khasianus)rich in methyl eugenol

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          Abstract

          Abstract A new strain of Cymbopogon khasianus rich in methyl eugenol was identified and named Jor Lab L-9. It is stable for production of essential oil yield (average 0.81%; σ d i 2 = 0.00) and methyl eugenol (average 74.56%; σ d i 2 = 0.06). This variety was registered with ICAR-NBPGR, New Delhi, India, under registration number INGR-18037.

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          Methyl Eugenol: Its Occurrence, Distribution, and Role in Nature, Especially in Relation to Insect Behavior and Pollination

          This review discusses the occurrence and distribution (within a plant) of methyl eugenol in different plant species (> 450) from 80 families spanning many plant orders, as well as various roles this chemical plays in nature, especially in the interactions between tephritid fruit flies and plants.
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            Methyl eugenol and cue-lure traps for suppression of male oriental fruit flies and melon flies (Diptera: Tephritidae) in Hawaii: effects of lure mixtures and weathering.

            Methyl eugenol (4-allyl-1,2-dimethoxybenzene-carboxylate) and cue-lure [4-(p-acetoxyphenyl)-2-butanone] are highly attractive kairomone lures to oriental fruit fly, Bactrocera dorsalis (Hendel), and melon fly, B. cucurbitae (Coquillett), respectively. Plastic bucket traps were evaluated as dispensers for methyl eugenol and cue-lure for suppression of the 2 fruit flies in Hawaii. Methyl eugenol and cue-lure mixtures were compared with pure methyl eugenol or cue-lure over 4 seasons. B. dorsalis captures differed significantly with treatment and season. B. dorsalis captures with 100% methyl-eugenol were significantly greater than all other treatments (25, 50, and 75%). B. cucurbitae captures also differed significantly with treatment but not with season. Captures with 100, 75, and 50% cue-lure were not significantly different. Bucket traps baited with cue-lure (+ malathion) and weathered under Hawaiian climatic conditions were attractive to B. cucurbitae up to 8 wk. Two methyl eugenol dispensers (canec disks and Min-U-Gel) were compared with bucket traps. Dispensers (methyl eugenol + malathion) were weathered for 2-16 wk under Hawaiian climatic conditions and bioassayed during summer and winter. Initially, captures of B. dorsalis were not significantly different for the 3 dispensers. Bucket traps and canec disks were most resistant to weather, remaining attractive to B. dorsalis flies up to 16 wk. Min-U-Gel was least resistant, losing attractiveness to B. dorsalis flies within 2 wk. On the basis of performance, bucket traps and canec disks were equally long-lived up to 14 wk; thereafter, bucket traps were slightly more attractive during winter. Canec disks were cheapest, but on the basis of possible environmental concerns, bucket traps may be the best all-around choice for areawide suppression of fruit flies.
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              Analysis of genotype × environment interaction for seed yield in spring oilseed rape using the AMMI model

              Abstract In order to assess the genotype by environment interaction (GE) and select genotypes to exploit narrow and broad adaptations, twenty-two spring oilseed rape genotypes were subjected to field surveys at five experimental sites in the 2015-16 and 2016-17 growing seasons. Plant materials were sown in the form of a randomized complete block design with three replicates. The additive main effects and multiplicative interaction (AMMI) model was used to determine the genotype, environment, and GE effects. The sum of squares (SS) for the first three interaction principal components was very close to the SS for the GE signal; therefore, AMMI3 was diagnosed as the most accurate model to optimize predictive accuracy. SAN48 had the highest broad adaptability. In total, the chances of increasing yield were 55.80% from broad adaptations, 26.73% from narrow adaptations with 4 mega-environments, and an additional 17.47% from narrow adaptations with 5 mega-environments.
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                Author and article information

                Journal
                cbab
                Crop Breeding and Applied Biotechnology
                Crop Breed. Appl. Biotechnol.
                Crop Breeding and Applied Biotechnology (Viçosa, MG, Brazil )
                1518-7853
                1984-7033
                2020
                : 20
                : 3
                : e320720315
                Affiliations
                [1] Jorhat Assam orgnameCSIR-North East Institute of Science and Technology orgdiv1Biological Science and Technology Division India
                Article
                S1984-70332020000300308 S1984-7033(20)02000300308
                10.1590/1984-70332020v20n3c49
                ff01117c-9600-4bcc-aaf2-bf12542533e9

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 11 July 2020
                : 27 April 2020
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 19, Pages: 0
                Product

                SciELO Brazil

                Categories
                Cultivar Release

                Cymbopogon khasianus,essential oil quality,methyleugenol

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