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Article: Biology of Neoleucinodes elegantalis (Guenée 1854) (Lepidoptera: Crambidae): pest of economic importance of naranjilla, an Amazonian fruit of Ecuador

Noboa, Michelle / Viera, William

International journal of tropical insect science. 2020 Sept., v. 40, no. 3

2020

Abstract: The fruit borer, Neoleucinodes elegantalis (Guenée 1854) is the main pest infesting naranjilla crop (Solanum quitoense) in Ecuador, causing up to 70% loss of production. This research describes the biology of this insect in a laboratory environment ... ...

Abstract	The fruit borer, Neoleucinodes elegantalis (Guenée 1854) is the main pest infesting naranjilla crop (Solanum quitoense) in Ecuador, causing up to 70% loss of production. This research describes the biology of this insect in a laboratory environment simulating the subtropical environment of the Amazonian Andes (average temperature of 24 ± 1 °C and relative humidity of 85%). Adult insects were sexed, a population created with a ratio of two males for each female and larvae were reared in unripe naranjilla fruits. Eggs were placed on the fruit in masses of 3 to 15 units. Five larval instars were confirmed according to width of the cephalic capsules with a total larval duration of 20.4 ± 0.13 days. The pupal stage lasted 13.02 ± 0.35 days. Male adults had longevity of 10.06 ± 1.75 days and females 10.86 ± 1.30 days. Finally, pre-oviposition period lasted 2.67 ± 0.72 days, oviposition 4.33 ± 1.90 days and post-oviposition 3.87 ± 1.13 days.
Keywords	Neoleucinodes elegantalis ; Solanum quitoense ; eggs ; females ; fruits ; imagos ; instars ; larvae ; larval development ; longevity ; males ; oviposition ; pests ; pupae ; rearing ; relative humidity ; temperature ; Andes region ; Ecuador
Language	English
Dates of publication	2020-09
Size	p. 717-722.
Publishing place	Springer International Publishing
Document type	Article
ZDB-ID	2166668-4
ISSN	1742-7592 ; 1742-7584
ISSN (online)	1742-7592
ISSN	1742-7584
DOI	10.1007/s42690-020-00118-7
Database	NAL-Catalogue (AGRICOLA)

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Article: Genetic parameters for fruit mineral content in an interspecific pear (Pyrus spp.) population

Viera, William / Winefield, Christopher

New Zealand journal of crop and horticultural science. 2019 Apr. 3, v. 47, no. 2

2019

Abstract: There is a lack of data and information on mineral content in pear fruit and none on the genetic parameters related to these individual elements. The aim of this research was to report mineral composition of pear fruit and to determine the quantitative ... ...

Abstract	There is a lack of data and information on mineral content in pear fruit and none on the genetic parameters related to these individual elements. The aim of this research was to report mineral composition of pear fruit and to determine the quantitative genetic parameters of mineral content in fruit from interspecific pear populations. There was a high genetic component involved in the accumulation of boron and aluminium in the fruit, with heritabilities of as much as 0.72. Iron had a positive genetic correlation with accumulation of zinc (0.72) and sulphur (0.71), while chromium had a negative correlation with nickel (−0.77), phosphorus (−0.70) and magnesium (−0.4) accumulation. Parents of the same origin (Asian or European) had similar estimated breeding values for total mineral content. Macro element mineral content of fruit was: 4% calcium, 13% phosphorus, 76% potassium, 5% magnesium and 2% sulphur and for micro element mineral content 39% boron, 12% iron, 8% zinc, 4% manganese, 7% copper, 0.4% chromium, 9% nickel and 21% aluminium.
Keywords	Pyrus ; aluminum ; boron ; calcium ; chromium ; copper ; fruits ; genetic correlation ; heritability ; iron ; magnesium ; manganese ; mineral content ; nickel ; parents ; pears ; phosphorus ; potassium ; sulfur ; zinc
Language	English
Dates of publication	2019-0403
Size	p. 125-141.
Publishing place	Taylor & Francis
Document type	Article
ZDB-ID	2098786-9
ISSN	1175-8783 ; 0114-0671
ISSN (online)	1175-8783
ISSN	0114-0671
DOI	10.1080/01140671.2019.1596958
Database	NAL-Catalogue (AGRICOLA)

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Article: Pulp Mineral Content of Passion Fruit Germplasm Grown in Ecuador and Its Relationship with Fruit Quality Traits

Viera, William / Shinohara, Takashi / Samaniego, Iván / Terada, Naoki / Sanada, Atsushi / Ron, Lenin / Koshio, Kaihei

Plants. 2022 Mar. 04, v. 11, no. 5

2022

Abstract: There are several species of passion fruit grown in South America. However, there is a lack of information about the mineral content in their pulp. Thus, the objective of the present research was to determine the mineral content in the pulp of different ... ...

Abstract	There are several species of passion fruit grown in South America. However, there is a lack of information about the mineral content in their pulp. Thus, the objective of the present research was to determine the mineral content in the pulp of different germplasms of passion fruit [Passiflora edulis f. flavicarpa (INIAP 2009 and P10), P. alata (Sweet passion fruit), P. edulis f. edulis (Gulupa) and Passiflora sp. (Criollo POR1 and Criollo PICH1)] grown in Ecuador and to determine their relationship with relevant fruit quality traits. The results showed that high Mg content was associated with less peel thickness, soluble solids was negatively related to K and B content, and vitamin C was negatively related to S content. INIAP 2009 had high titratable acidity and fruit weight but low N and Na; P10 showed the highest contents of N, K, Na, Mn and fruit weight but less P, Mg, and Fe; sweet passion fruit showed high S, Zn, Cu, soluble solids, and peel thickness but low K, Ca, B, and titratable acidity; Gulupa had high Mg, B, and Zn but low S, Fe, and Mn; Criollo POR1 showed high N and Fe but low Zn; and Criollo PICH1 showed high P, Ca, Mg, and Cu but low soluble solids and peel thickness. These results provide additional information on passion fruit germplasm grown in Ecuador and constitutes a reference for further breeding programs.
Keywords	Passiflora edulis f. flavicarpa ; ascorbic acid ; fruit quality ; fruit weight ; germplasm ; mineral content ; passion fruits ; pulp ; titratable acidity ; Ecuador
Language	English
Dates of publication	2022-0304
Publishing place	Multidisciplinary Digital Publishing Institute
Document type	Article
ZDB-ID	2704341-1
ISSN	2223-7747
ISSN	2223-7747
DOI	10.3390/plants11050697
Database	NAL-Catalogue (AGRICOLA)

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Article: Seed Germination and Seedling Growth of Yellow and Purple Passion Fruit Genotypes Cultivated in Ecuador

Viera, William / Shinohara, Takashi / Sanada, Atsushi / Terada, Naoki / Ron, Lenin / Koshio, Kaihei

Horticulturae. 2022 Aug. 20, v. 8, no. 8

2022

Abstract: Seed is a fundamental tool to carry out breeding processes and for the propagation of the crops; however, seed propagation generally has low and irregular germination. Passion fruit (Passiflora) species are economically important for Ecuador, which is ... ...

Abstract	Seed is a fundamental tool to carry out breeding processes and for the propagation of the crops; however, seed propagation generally has low and irregular germination. Passion fruit (Passiflora) species are economically important for Ecuador, which is the main exporter of passion fruit concentrate in Latin America. Ecuadorian farmers propagate new plants by seeds to establish new passion fruit orchards or to extend their cultivated area. The objective of this research was to determine the differences in germination and seedling development with the application of priming methods in five genotypes of passion fruit belonging to three different taxa that are of commercial use in Ecuador. The genotypes used were: INIAP 2009 and P10 (P. edulis f. flavicarpa), Gulupa (P. edulis f. edulis), and local germplasms POR1 (P. edulis f. flavicarpa) and PICH1 (P. maliformis). The priming methods were: water (control), hydrogen peroxide at 15%, potassium nitrate at 1%, PEG 6000 at −1.2 MPa, and gibberellic acid at 500 ppm. The results showed that there was a genotype-response depending on the priming method. Nevertheless, Polietilenoglicol (PEG 6000) could be considered as a promising method to encourage seed germination and promote seedling growth in the Passiflora species. More research regarding the use of this compound has to be carried out in order to determine in depth the physiological processes related to its functions to improve seed germination as well as production of vigorous seedlings.
Keywords	Passiflora edulis f. edulis ; cultivation area ; germplasm ; gibberellic acid ; hydrogen peroxide ; passion fruits ; potassium nitrate ; seed germination ; seedling growth ; seedlings ; Ecuador ; Latin America
Language	English
Dates of publication	2022-0820
Publishing place	Multidisciplinary Digital Publishing Institute
Document type	Article
ZDB-ID	2813983-5
ISSN	2311-7524
ISSN	2311-7524
DOI	10.3390/horticulturae8080754
Database	NAL-Catalogue (AGRICOLA)

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Article: Detection of hibiscus latent Fort Pierce virus in hibiscus (Hibiscus rosa-sinensis L.) and in a water source in Ecuador

Guevara, Fiama Estefany / Peredes, Estefany / Viera, William / Noceda, Carlos / Flores, Francisco Javier

Journal of plant pathology. 2022 Feb., v. 104, no. 1

2022

Abstract: Hibiscus latent Fort Pierce virus (HLFPV) is a member of the genus Tobamovirus (family Virgaviridae) and a common virus infecting members of the family Malvaceae. This research presents the first report of HLFPV detection in hibiscus plants with viral ... ...

Abstract	Hibiscus latent Fort Pierce virus (HLFPV) is a member of the genus Tobamovirus (family Virgaviridae) and a common virus infecting members of the family Malvaceae. This research presents the first report of HLFPV detection in hibiscus plants with viral symptoms and the use of high throughput sequencing (HTS) to detect this virus in a water source in Ecuador. The near complete genome (99.41%) of HLFPV was assembled.
Keywords	Hibiscus latent Fort Pierce virus ; Hibiscus rosa-sinensis ; genome ; plant pathology ; viruses ; Ecuador
Language	English
Dates of publication	2022-02
Size	p. 33-35.
Publishing place	Edizioni ETS
Document type	Article
ZDB-ID	1378427-4
ISSN	2239-7264 ; 1125-4653
ISSN (online)	2239-7264
ISSN	1125-4653
Database	NAL-Catalogue (AGRICOLA)

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Article: Pulp Mineral Content of Passion Fruit Germplasm Grown in Ecuador and Its Relationship with Fruit Quality Traits.

Viera, William / Shinohara, Takashi / Samaniego, Iván / Terada, Naoki / Sanada, Atsushi / Ron, Lenin / Koshio, Kaihei

Plants (Basel, Switzerland)

2022 Volume 11, Issue 5

Abstract	There are several species of passion fruit grown in South America. However, there is a lack of information about the mineral content in their pulp. Thus, the objective of the present research was to determine the mineral content in the pulp of different germplasms of passion fruit [
Language	English
Publishing date	2022-03-04
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2704341-1
ISSN	2223-7747
ISSN	2223-7747
DOI	10.3390/plants11050697
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Mineral Content and Phytochemical Composition of Avocado var. Hass Grown Using Sustainable Agriculture Practices in Ecuador.

Viera, William / Gaona, Pablo / Samaniego, Iván / Sotomayor, Andrea / Viteri, Pablo / Noboa, Michelle / Merino, Jorge / Mejía, Paúl / Park, Chang Hwan

Plants (Basel, Switzerland)

2023 Volume 12, Issue 9

Abstract: Avocado demand has increased in recent years due to the nutraceutical properties that this fruit has and its positive impacts on human health; however, avocado production also requires sustainable alternatives to improve its cultivation. The objective of ...

Abstract	Avocado demand has increased in recent years due to the nutraceutical properties that this fruit has and its positive impacts on human health; however, avocado production also requires sustainable alternatives to improve its cultivation. The objective of this study was to carry out characterization of the mineral content and phytochemical compounds in avocado fruit of the Hass variety grown using sustainable agricultural practices in Ecuador. Our results show an increase in fruit quality traits, such as firmness, and in the content of soluble solids, protein, fiber, fat, carotenoids, Ca, Mg, Zn and stearic acid in the pulp of the avocado Hass variety, as well as an initial trend of yield increase with the application of sustainable practices. Moreover, antioxidant activity was associated with polyphenol content. There were positive correlations of Mg with K and Ca, and of flavonoids with linolelaidic, linoleic and linolenic acids. Overall, our results indicate that avocado can be used as a functional and nutritional food due to its phytochemical composition and the mineral content of its pulp, which contributes to the promotion of its consumption and encourages healthy eating. In addition, the use of sustainable practices, such as fertigation and the application of microorganisms, is also promoted for growing avocado.
Language	English
Publishing date	2023-04-27
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2704341-1
ISSN	2223-7747
ISSN	2223-7747
DOI	10.3390/plants12091791
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Key Agronomic Fertilization Practices That Influence Yield of Naranjilla (Solanum quitoense Lam.) in the Ecuadorian Amazon

Viera, William / Díaz, Alejandra / Caicedo, Carlos / Suárez, Alfonso / Vargas, Yadira

Agronomy. 2021 Feb. 10, v. 11, no. 2

2021

Abstract: An application of a balanced nutrition will improve the soil as well as enhance the yield of naranjilla (Solanum quitoense Lam.) grown in the Ecuadorian Amazon. A field experiment was carried out in Palora, 16 de Agosto (Morona Santiago province) and ... ...

Abstract	An application of a balanced nutrition will improve the soil as well as enhance the yield of naranjilla (Solanum quitoense Lam.) grown in the Ecuadorian Amazon. A field experiment was carried out in Palora, 16 de Agosto (Morona Santiago province) and Fátima (Pastaza province) to find which variables are related with the yield of the naranjilla crop and the yield response when the crop receives complete nutrition with N, P, K, Ca, Mg, and S plus lime and with the omission of each of these nutrients. A Random Complete Block Design with three replications was used in the three environments. The naranjilla crop had higher yields (18.14 Mg ha⁻¹) in the complete treatments (N, P, K, Ca, Mg, and S) and without S and Mg, consequently, these two last nutrients did not limit the production. When N, P, K, and Ca were not applied, the yields fell to 14.62 Mg ha⁻¹. The main environmental effect showed that Palora had the highest fruit yields (19.73 Mg ha⁻¹), followed by 16 de Agosto (13.57 Mg ha⁻¹) and finally Fátima with 11.04 (Mg ha⁻¹). These preliminary results showed that with the treatments without S (18.55 Mg ha⁻¹), without Mg (18.42 Mg ha⁻¹) and complete (17.46 Mg ha⁻¹) the highest yields were obtained, consequently, the production was not affected by the absence of these elements; the opposite happened when N, P, K, and Ca were not present.
Keywords	Solanum quitoense ; agronomy ; environmental impact ; field experimentation ; fruits ; nutrition ; soil ; Amazonia
Language	English
Dates of publication	2021-0210
Publishing place	Multidisciplinary Digital Publishing Institute
Document type	Article
Note	NAL-AP-2-clean
ZDB-ID	2607043-1
ISSN	2073-4395
ISSN	2073-4395
DOI	10.3390/agronomy11020310
Database	NAL-Catalogue (AGRICOLA)

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Article: Phytochemical Composition and Antioxidant Activity of Passiflora spp. Germplasm Grown in Ecuador

Viera, William / Shinohara, Takashi / Samaniego, Iván / Sanada, Atsushi / Terada, Naoki / Ron, Lenin / Suárez-Tapia, Alfonso / Koshio, Kaihei

Plants. 2022 Jan. 26, v. 11, no. 3

2022

Abstract: Tropical fruits are in high demand for their flavor and for their functional composition because these compounds are considered nutraceuticals. Passion fruit production is of economic importance to Ecuador; however, several Passiflora species are grown ... ...

Abstract	Tropical fruits are in high demand for their flavor and for their functional composition because these compounds are considered nutraceuticals. Passion fruit production is of economic importance to Ecuador; however, several Passiflora species are grown and each has to be analyzed to identify their phytochemical composition. In this study, the polyphenol, flavonoid, carotenoid, vitamin C, sugar and organic acid contents were determined. Six different Passiflora spp. germplasms were analyzed, coming from Passiflora edulis f. flavicarpa, Passiflora alata, Passiflora edulis f. edulis and unidentified Passiflora species (local germplasm). Measurement techniques included reflectometry for vitamin C, spectrophotometry for antioxidant compounds and HPLC for sugars and organic acids. Data were analyzed by principal component analysis, correlation and analysis of variance. Results showed that INIAP 2009 and P10 showed a high amount of polyphenols, antioxidant activity and citric content. Sweet passion fruit had the lowest vitamin C content while Gulupa showed the highest content. In terms of the local germplasm, POR1 showed the lowest content of flavonoids while PICH1 had high flavonoid and carotenoid content. Polyphenols were the main compounds that influenced antioxidant activity. This phytochemical information adds value to passion fruit as a nutraceutical source.
Keywords	Passiflora alata ; Passiflora edulis f. edulis ; Passiflora edulis f. flavicarpa ; analysis of variance ; antioxidant activity ; antioxidants ; ascorbic acid ; carotenoids ; chemical constituents of plants ; dietary supplements ; flavonoids ; flavor ; germplasm ; passion fruits ; polyphenols ; principal component analysis ; reflectometry ; spectroscopy ; Ecuador
Language	English
Dates of publication	2022-0126
Publishing place	Multidisciplinary Digital Publishing Institute
Document type	Article
ZDB-ID	2704341-1
ISSN	2223-7747
ISSN	2223-7747
DOI	10.3390/plants11030328
Database	NAL-Catalogue (AGRICOLA)

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Article: First Report of Gynmandrosoma aurantianum (Lepidoptera: Tortricidae) in Mandarin (Citrus reticulata) in the Inter-Andean Valleys of Ecuador

Noboa, Michelle / Medina, Lorena / Viera, William

Florida entomologist. 2018 Dec., v. 101, no. 4

2018

Abstract: Mandarin (Citrus reticulata) is an economically important fruit for farmers of the inter-Andean valleys of Ecuador, South America. Insectinfested fruits were sampled in the locality of Perucho (Pichincha Province). The larvae obtained from the interior ... ...

Abstract	Mandarin (Citrus reticulata) is an economically important fruit for farmers of the inter-Andean valleys of Ecuador, South America. Insectinfested fruits were sampled in the locality of Perucho (Pichincha Province). The larvae obtained from the interior of the fruit were cultured in insect cages to obtain adults. Morphological observations of characteristics of the larval stage, and male and female genitalia at the adult stage confirmed the taxonomic description of the species Gynmandrosoma aurantianum (Lima) (Lepidoptera: Tortricidae). According to our knowledge, this is the first report of mandarin being infested by G. aurantianum in Ecuador.
Keywords	adults ; cages ; Citrus reticulata ; farmers ; female genitalia ; fruits ; insects ; larvae ; males ; taxon descriptions ; Tortricidae ; valleys ; Ecuador
Language	English
Dates of publication	2018-12
Size	p. 699-701.
Publishing place	Florida Entomological Society
Document type	Article
ISSN	1938-5102
DOI	10.1653/024.101.0411
Database	NAL-Catalogue (AGRICOLA)

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