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Volatile profiling of two pear genotypes with different potential for white pear aroma improvement

文献类型： 外文期刊

作者： Yi, Xing-Kai 1 ; Liu, Guo-Feng 1 ; Rana, Mohammad M. 1 ; Zhu, Li-Wu 3 ; Jiang, Shu-Liang 4 ; Huang, Yong-Feng 4 ; Lu, 1 ;

作者机构： 1.Anhui Agr Univ, State Key Lab Tea Plant Biol & Utilizat, 130 Changjiang Blvd West, Hefei 230036, Anhui, Peoples R China

2.Anhui Acad Agr Sci, Inst Hort, Key Lab Genet Improvement & Ecophysiol Hort Crop, 40 Nongke South Rd, Hefei 230031, Anhui, Peoples R China

3.Anhui Agr Univ, Coll Hort Sci, 130 Changjiang Blvd West, Hefei 230036, Anhui, Peoples R China

4.Ctr Pear Germplasm Collect, Dangshan 235300, Anhui, Peoples R China

5.Agr Technol Promot Ctr, Huangshan 242700, Anhui, Peoples R China

关键词： Chinese white pear;Aroma;Intact fruit;Blended flesh;OPLS analysis;Plant breeding

期刊名称：SCIENTIA HORTICULTURAE （ 影响因子：3.463； 五年影响因子：3.672 ）

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收录情况： SCI

摘要： Chinese white pear (Pyrus bretschneideri) is sweet, juicy and crispy, but not fragrant. The two pears 'Xiang-Mian Li' ('XML') and 'Mu-Tou Su' ('MTS') with fragrant and large fruits were noted recently from pear germplasm screening. Their volatile profiles were compared with those of typical white pear Tang Shan Suli' ('DSS') (P. bretschneideri) and fragrant pear 'Nan-Guo Li' ('NGL') (P. ussuriensis) in this study for a better understanding the chemistry of the differences among the tested cultivars. Headspace solid phase microextraction (HS-SPME) coupled to gas chromatography mass spectrum (GC MS) was used for sensitive intact fruit volatile profiling while a static headspace GC MS system was employed for accurate volatile quantification. The rank of the tested intact fruits based on detected volatile numbers and total odor active values was 'NGL'>'XML'>'MTS'>'DSS'. Among many detected volatiles, ethyl 2-methylbutyrate and ethyl hexanoate were the most potent and pleasant odorants from the intact fruit and fruit pulp of 'XML' and 'NGL', but not from 'MTS' pulp. They were identified as the most important contributors to the volatile profile variance among the tested pear fruits. Our study indicated that compared to 'MTS', 'XML' had much more intense aroma and this genotype had potential for Chinese white pear aroma improvement. (C) 2016 Elsevier B.V. All rights reserved.

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