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Made available in DSpace on 2020-12-12T01:18:04Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-07-01 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Due to the importance of banana consumption in developing countries and producing zinc-rich foods, the objective of this study was to evaluate the feasibility of banana bunch sprays and bunch stalk feeding with Zn aiming to biofortify this fruit. Zn sprays were carried out with a dose of 80 g ha−1 using ZnCl2 and ZnCl2 combined with a chelating agent in two banana cultivars (‘Maravilha’ and ‘FHIA 18’). Bunch stalk feeding with Zn was carried out by fixing plastic bags on the stem end containing solutions of ZnSO4 (0, 0.5, 1.0 and 2.0 g L−1) in two banana cultivars (‘Williams’ and ‘Prata Anã’). Both strategies resulted in a maximum fruit Zn content of 0.14 mg 100 g−1. Although it was possible to increase the Zn content in banana fruit from ‘FHIA 18’ and ‘Prata Anã’ cultivars, both strategies did not result in biofortified banana fruit with a Zn level which would fulfil the Zn dietary reference intake (DRI) of 2 mg dia−1 for children. Banana bunch sprays with Zn did not affect the fruit quality, but bunch stalk feeding with Zn resulted in fruits with lower ratio, pH and ascorbic acid content. Centro Universitário UNIFAFIBE, Rua Prof. Orlando França de Carvalho 325 Faculdade de Ciências Agrárias e Veterinárias (FCAV) Universidade Estadual Paulista (UNESP), Via de acesso Prof. Paulo Donato Castellane s/n Escola de Agronomia (EA) Universidade Federal de Goiás (UFG), Setor de Horticultura, Avenida Esperança, s/n. Campus Samambaia Embrapa Mandioca e Fruticultura Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA), Rua Embrapa s/nº, Caixa Postal 007 Faculdade de Ciencias Farmaceuticas (FCF) Universidade Estadual Paulista (UNESP), Campus de Araraquara. Rod. Araraquara - Jaú, km 1 s/n Faculdade de Ciências Agrárias e Veterinárias (FCAV) Universidade Estadual Paulista (UNESP), Via de acesso Prof. Paulo Donato Castellane s/n Faculdade de Ciencias Farmaceuticas (FCF) Universidade Estadual Paulista (UNESP), Campus de Araraquara. Rod. Araraquara - Jaú, km 1 s/n FAPESP: 2015/16685-8 FAPESP: 2016/24141

Made available in DSpace on 2019-10-06T15:54:41Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-01-01 Root-knot nematode Meloidogyne mayaguensis Rammah & Hirschmann is a limiting factor in guava tree (Psidium guajava L.) production around the world. An alternative to address this problem is the use of resistant root-knot nematode rootstocks. However, the guava nursery system which is based on herbaceous stem cutting propagation needs to be modified as a rootstock produced via cutting must be grafted with nematode susceptible commercial cultivars. Thus, the objective of this study was to verify the feasibility of omega bench grafting in guava tree propagated by herbaceous stem cutting. Root-knot nematode tolerant ‘Tailandesa’ herbaceous stem cuttings was used as rootstock and ‘Paluma’ and ‘Pedro Sato’ as commercial cultivar grafts. It was observed 100% rooting, cutting survival, and leaf retention on rootstocks grafted with ‘Paluma’ and ‘Pedro Sato’. However, grafting take was not successful as the tissues presented fast oxidation, dehydration and graft death in both commercial cultivars. However, the immersion of the grafts into a solution containing 2.0% citric acid and 1.0% ascorbic acid controlled the oxidation process and resulted in 28.6% and 37.5% successful grafting in the combinations ‘Paluma’/‘Tailandesa’ and ‘Pedro Sato’/’Tailandesa’, respectively. Faculdade de Ciências Agrárias e Veterinárias (FCAV) Universidade Estadual Paulista (UNESP) Faculdade de Ciências Agrárias e Veterinárias (FCAV) Universidade Estadual Paulista (UNESP)

Made available in DSpace on 2018-12-11T17:15:50Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-07-01 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Macadamia nut industry is increasingly gaining more space in the food market and the success of the industry and the quality are largely due to the selection of cultivars through macadamia nut breeding programs. Thus, the objective of this study was to investigate the feasibility NIRS coupled to chemometric classification methods, to build a rapid and non-invasive analytical procedure to classify different macadamia cultivars based on intact nuts. Intact nuts of five different macadamia cultivars (HAES 246, IAC 4-20, IAC 2-23, IAC 5-10, and IAC 8-17) were harvested in 2017. Two NIR reflectance spectra were collected per nut, and the mean spectra were used to chemometrics analysis. Principal component analysis-linear discriminant analysis (PCA-LDA) and genetic algorithm-linear discriminant analysis (GA-LDA) were used to develop the classifications models. The GA-LDA approach resulted in accuracy higher than 94.44%, with spectra preprocessed with Savitzky-Golay smoothing. Thus, this approach can be implemented in the macadamia industry, allowing the selection of cultivars based on intact nuts. However, it is recommended that more experimentation to include more data variability in order to increase the classification accuracy to 100%. Faculdade de Ciências Farmacêuticas (FCFAR) Campus de Araraquara Departamento de Alimentos e Nutrição Universidade Estadual Paulista (UNESP), Rodovia Araraquara-Jaú, km 1 – CP 502 Instituto de Química Química Biológica e Quimiometria Universidade Federal do Rio Grande do Norte (UFRN), Avenida Senador Salgado Filho, no. 3000, Bairro de Lagoa Nova Faculdade de Ciências Agrárias e Veterinárias (FCAV) Campus de Jaboticabal Departamento de Produção Vegetal Universidade Estadual Paulista (UNESP), Via de Acesso Prof. Paulo Donato Castellane s/n Faculdade de Ciências Farmacêuticas (FCFAR) Campus de Araraquara Departamento de Alimentos e Nutrição Universidade Estadual Paulista (UNESP), Rodovia Araraquara-Jaú, km 1 – CP 502 Faculdade de Ciências Agrárias e Veterinárias (FCAV) Campus de Jaboticabal Departamento de Produção Vegetal Universidade Estadual Paulista (UNESP), Via de Acesso Prof. Paulo Donato Castellane s/n

The objective of this study was to use dry matter (DM) calibration models to sort ‘Palmer’ mangoes prior cold storage and to evaluate the physiological and chemical changes during the storage period. PLS model developed with fruit from 2015/2016 season was not adequate to predict DM content in fruit from 2016/2017 (not adjusted R²). Therefore, VIS‐NIR spectra from 2016/2017 season were incorporated into data set and a new model was developed (RMSEcᵥ of 10.5 g.kg⁻¹, RP2 of 0.75). With the new model, ‘Palmer’ mangoes were sorted into two maturity stages (150 g.kg⁻¹ and 110 g.kg⁻¹) which resulted in quality differences mainly in relation to DM and SSC. Portable VIS‐NIR spectrometer can be used to sort fruit according to maturity stages based on DM content and this classification affect fruit quality during cold storage as fruit with higher DM (150 g.kg⁻¹) presented better quality than fruit with lower DM (110 g.kg⁻¹). PRACTICAL APPLICATIONS: Although results can be found regarding the use of portable NIR spectrometers to estimate maturity in mango fruit, there are no studies stating the use of this method to sort fruit prior cold storage. Our results highlight that portable VIS‐NIR spectrometer can be used to sort fruit according to maturity stages based on dry matter (DM) content and this classification affects fruit quality during cold storage as fruit with higher DM (150 g.kg⁻¹) presented better quality than fruit with lower DM (110 g.kg⁻¹) at the end of the storage period.

Made available in DSpace on 2018-12-11T16:49:26Z (GMT). No. of bitstreams: 0 Previous issue date: 2017-09-01 Stegasta bosqueella Chambers (Lepidoptera: Gelechiidae) is one of the principal pests of Brazilian peanut crops. Traps made from plastic bottles and baited with molasses sugar can be used to attract S. bosqueella. Molasses-baited traps are a promising tool for the monitoring and control of this insect. UNESP - São Paulo State University School of Agricultural and Veterinary Sciences (FCAV/UNESP), Via de Acesso Prof. Paulo Donato Castellane s/n UNESP - São Paulo State University School of Agricultural and Veterinary Sciences (FCAV/UNESP), Via de Acesso Prof. Paulo Donato Castellane s/n