Rodrigo Infante

• University of Chile

The aim of this study is to determine the phenolic and polysaccharidic composition, texture properties, and gene expression of new seedless table grape cultivars Timco™ and Krissy™ and compare them to the traditional table grape variety Crimson Seedless (Vitis vinifera L.), during ripening and in commercial postharvest conditions. According to the...

Chilling injury is a physiological disorder caused by cold storage in peaches and nectarines. The main symptom of chilling injury is mealiness/wooliness, described as a lack of juice in fruit flesh. In this work, we studied two nectarine varieties (Andes Nec-2 and Andes Nec-3) with contrasting susceptibility to mealiness after cold storage. A non-t...

Japanese plums exhibit wide diversity of fruit coloration. The red to black hues are caused by the accumulation of anthocyanins, while their absence results in yellow, orange or green fruits. In Prunus, MYB10 genes are determinants for anthocyanin accumulation. In peach, QTLs for red plant organ traits map in an LG3 region with three MYB10 copies (...

Japanese plum fruits are rich in phenolic compounds, such as anthocyanins and flavan-3-ols, whose contents vary significantly among cultivars. Catechin (C) and epicatechin (EC) are flavan-3-ol monomers described in the fruits of this species and are associated with bitterness, astringency, antioxidant capacity, and susceptibility to enzymatic mesoc...

Competitiveness and projection of the fresh plum international demand. The purpose of the research is to reflect on the positive trend change in the international demand for fresh plums between 2015 and 2019. Chile and Spain are the leaders in world exports. The novelty is the Chinese demand for the European plum ‘D’Agen’, today also exported for f...

Japanese plums exhibit wide diversity of fruit coloration. The red to black hues are caused by the accumulation of anthocyanins, while their absence results in yellow, orange or green fruits. In Prunus, MYB10 genes are determinants for anthocyanin accumulation. In peach, QTLs for red plant organ traits map in an LG3 region with three MYB10 copies (...

Kiwifruit (Actinidia deliciosa [A. Chev.], C.V. Liang & A. R. Ferguson, 1984) is a perennial plant, with morphologically hermaphroditic and functionally dioecious flowers. Fruits of this species are berries of great commercial and nutritional importance. Nevertheless, few studies have analyzed the molecular mechanisms involved in sexual differentia...

Consumption of fresh fruit is known to protect against non-communicable diseases due to the fruit's content in compounds with an antioxidant capacity, among them is polyphenols. Asian plums (Prunus salicina L.) accumulate more than 40 phenolic compounds, with a remarkable diversity in their profiles, depending on the variety and environmental condi...

Kiwifruit (Actinidia chinensis var. deliciosa (A Chev) Liang et Ferguson) is a sub-tropical vine species from the Actinidiaceae family native to China. This species has an allohexaploid genome (from diploid and autotetraploid parents), contained in 174 chromosomes producing a climacteric and fleshy fruit called kiwifruit. Currently, only a small bo...

Kiwifruit are climacteric fruit, so they must be harvested before they are fully ripe, allowing for the extension of their shelf-life via cold storage. Therefore, an adequate knowledge about how ethylene-induced fruit senescence is required to avoid significant economic losses. The main goal of the present study was to investigate the kiwifruit rip...

Japanese plums are popular fruits since they are exceptionally nutritious with high fiber and antioxidant content. This work has aimed to analyze the most critical phenology, fruit quality and postharvest parameters from a genomic point of view to identify molecular markers closely linked to the most significant Quantitative trait loci (QTLs). A ge...

Studies have demonstrated the significance of intrinsic sensory attributes on consumer responses to fruits. This paper evaluates the effects on consumers of intrinsic characteristics on new and existing fruit varieties. Fruit consumers were exposed to and tasted a new or an old variety of fruit and rated its intrinsic search and experience attribut...

Background Gibberellins (GA 3 ) are the most sprayed growth regulator for table grape production worldwide, increasing berry size of seedless varieties through pericarp cell expansion. However, these treatments also exacerbate berry drop, which has a detrimental effect on the postharvest quality of commercialized clusters. Several studies have sugg...

Background Gibberellins (GA3) are the most sprayed growth regulator for table grape production worldwide, increasing berry size of seedless varieties through pericarp cell expansion. However, these treatments also exacerbate berry drop, which has a detrimental effect on the postharvest quality of commercialized clusters. Several studies have sugges...

Background Gibberellins (GA3) are the most sprayed growth regulator for table grape production worldwide, increasing berry size of seedless varieties through pericarp cell expansion. However, these treatments also exacerbate berry drop, which has a detrimental effect on the postharvest quality of commercialized clusters. Several studies have sugges...

Background Kiwifruit [Actinidia deliciosa (A Chev) Liang et Ferguson] is a sub-tropical vine from the Actinidiaceae family native from China. This specie has an allohexaploid genome (from a diploid and autotetraploid parents) contained in 174 chromosomes producing a climacteric and fleshy fruit called kiwifruit. Currently there's no too much genomi...

The authors have withdrawn this preprint from Research Square

Background Gibberellins (GA3) are the most sprayed growth regulator for table grape production worldwide, increasing berry size of seedless varieties through pericarp cell expansion. However, these treatments also exacerbate berry drop, which has a detrimental effect on the postharvest quality of commercialized clusters. Several studies have sugges...

Genotyping by sequencing (GBS) provides a large quantity of useful data suitable for the identification of single nucleotide polymorphisms (SNPs), facilitating accurate genomic studies in plant species. In this study, GBS-based SNPs were used to characterise 11 Japanese plum cultivars and to explore their natural allelic diversity in relation to th...

Chile is the third largest exporter of kiwifruit in the world. Its varietal production has traditionally been focused on green-fleshed kiwifruit varieties, with ‘Hayward’ being the most exported variety. 'soreli’ is a new Italian kiwifruit variety, which is characterized by its early ripening, big size, sweet taste, as well as its yellow flesh. Thi...

Chile is free of the “flavescence dorée” disease and its vector Scaphoideus titanus. Given the importance of viticulture industry in the country, it is fundamental to know which could be the consequences in case of accidental insect introduction in the Country. The potential distribution of the vector was evaluated through a model using the BIOCLIM...

Marker-assisted selection (MAS) in stone fruit (Prunus species) breeding is currently difficult to achieve due to the polygenic nature of the most relevant agronomic traits linked to fruit quality. Genotyping by sequencing (GBS), however, provides a large quantity of useful data suitable for fine mapping using Single Nucleotide Polymorphisms (SNPs)...

Best Linear Unbiased Predictors (BLUPs) coefficients of each seedling for ripening time, fruit weight, skin color, and soluble solids content.

Summary of the most important SNPs as cofactors related to different QTLs in the “98–99” parent for 2015 and 2016.

Summary of nearest genes related to the most important QTLs identified (ripening time, RT; fruit weight, FW; and skin color, SKC).

Summary of SNPs obtained from calling SNPs.

Depth and missingness from the unfiltered VCF file.

Marker trait association by Mixed Linear Model (MLM) by TASSEL v5 in 2016.

Marker trait association by Mixed Linear Model (MLM) by TASSEL v5 for both years.

Summary of descriptive statistics and normality test of Shapiro-Wilks of the evaluated traits.

Summary of the most important SNPs as cofactors related to different QTLs in the “Angeleno” parent for 2015 and 2016.

Summary of FastQ files and alignment results obtained by GBS.

Marker trait association by Mixed Linear Model (MLM) by TASSEL v5 in 2015.

In this work, we evaluate the relationship between the rheological and the sensory texture of fresh peach and nectarine varieties. Two non-melting fleshed varieties (NMF), ‘Andross’ and ‘Carson’, and four melting fleshed nectarines (MF), ‘Andes nec-1’, ‘Andes nec-2’, ‘Andes nec-3’, and ‘Venus’, were harvested and kept in a ripening chamber for four...

The aims of this study were to characterize the softening rate of the flesh and some physiological parameters of three peach cultivars during the last phase of on-tree development.During two consecutive seasons, labeled fruits were nondestructively monitored on-tree, from the stone-hardening phase up to harvest.The absorbance index of the skin (IAD...

The peach [Prunus persica L. (Batsch)] slow ripening (SR) trait is a mutation preventing the normal ripening process. Individuals with this phenotype are discarded in peach breeding programs. This trait is determined by a single gene (Sr/sr), where the recessive homozygote (sr/sr) confers the SR phenotype, and has been mapped to linkage group 4 of...

Kiwifruit breeding still largely relies on phenotypic observation of cross progeny grown in the field to fruiting maturity, without any selection prior to the juvenility being overcome. Developing markers for the selection of traits of interest would greatly help breeders to rapidly screen breeding populations. With the aim of mapping several trait...

A new and distinct variety of clingstone nectarine tree denominated ‘Andes Nec-3’ which has fruit that is similar to ‘Flavortop’ nectarine that are yellow in flesh color, firm in texture, and balanced acid/sweet flavor. The variety is distinguished from the ‘Flavortop’ by having a more extended red blush, better taste, and longer postharvest life p...

Peach and nectarine quality traits such as flavor, texture, and juiciness are important for consumer acceptance. Maturity date (MD) also plays a role in the fruit-ripening process and is an important factor for marketing fresh fruit. On the other hand, cold storage produces a physiological disorder known as chilling injury where the most important...

Introduction. Texture parameters are important factors for characterizing the sensory quality of raw almonds; nevertheless there is scarce literature that explores sensory differences among cultivars. The aim of this study was to characterize quality attributes of different raw almond cultivars. Materials and methods. The almond cultivars 'Nonparei...

Texture of fresh fleshy fruit is one of the main attributes that determine consumer preferences. Peach and nectarine flesh are usually classified as 'Melting Flesh' (MF) and 'Non Melting Flesh' (NMF); however, these categories are insufficient for describing and analysing the growing supply of new cultivars released annually to the market that exhi...

Reference List Obando-Ulloa, J. M., Jimenez, V., Machuca-Vargas, A., Beaulieu, J. C., Infante, R., & Escalona-Contreras, V. H. (2015). Effect of hot water dips on the quality of fresh-cut Ryan Sun peaches. IDESIA, 33(1), 13-26. Abstract: Fresh-cut products are an important developing food product category, and as a response to current lifestyles t...

To maintain peach and nectarine quality after harvest, low temperature storage is used. Low temperatures induce physiological disorders in peach, but the effect of cold storage on the sensory quality of the fruit before it is damaged by chilling injury syndrome remains unclear. To evaluate the cold storage effect on the sensory quality two peach cu...

Analysing the texture of fresh fruit is a fundamental aim in the food industry because it is the main factor that affects consumer acceptance, and it must therefore be measured objectively. However, as it is a sensory property, human beings should be involved in assessing it. To achieve this goal, panels of trained judges describe and quantify cert...

The 'Abate Fetel' pear is a clear example of a premium fruit cultivar that requires a consistently high quality level. This research focused on the effects of key variables of fruit industry decision-making, including agronomic options (harvest date), commercial value (fruit diameter) and marketing (time of commercial distribution). The analysis wa...

The 'Abate Fetel' pear is a clear example of a premium fruit cultivar that requires a consistently high quality level. This research focused on the effects of key variables of fruit industry decision-making, including agronomic options (harvest date), commercial value (fruit diameter) and marketing (time of commercial distribution). The analysis wa...

The peach melting flesh cultivars 'Ryan Sun' and 'Sweet September' and the non-melting, 'Kakamas' were harvested according to their visually assessed ground color and divided into four, ripeness classes (M1, M2, M3, and M4). The following aspects were determined: fruit mass, soluble, solids content (SSC), ground skin hue angle (h degrees) and chrom...

Purpose of review: The aims of this review are: (1) to highlight the most significant results in recent years regarding studies on maturity indicators in stone fruits particularly in peach and nectarine, with special reference to non-destructive technologies; and (2) to provide information and discuss the physiology of stone fruit maturation, parti...

Gamma irradiation has been widely used as a breeding technique to obtain new cultivars in ornamental species such as Alstroemeria, where several cultivars have been obtained through rhizome radiation. The optimum dosage for an appropriate induction of mutation must be considered for breeding purposes and it depends mainly on plant susceptibility. T...

Apricots are climacteric fruits with a high susceptibility to flesh softening and loss of flavor during postharvest storage, and most of the ripening processes are regulated by ethylene, which also has an effect on its own biosynthesis. To understand this process in apricot, inhibition of ethylene biosynthesis and perception was performed for study...

Several orchard management practices and postharvest strategies have been adopted to increase productivity and maintain fruit quality. Growth regulator sprays have been widely used to improve the size of stone fruits. The aim of this study was to evaluate the effect of sprays of different combinations of prohexadione-calcium (P-Ca) and naphthalene...

Several orchard management practices and postharvest strategies have been adopted to increase productivity and maintain fruit quality. Growth regulator sprays have been widely used to improve the size of stone fruits. The aim of this study was to evaluate the effect of sprays of different combinations of prohexadione-calcium (P-Ca) and naphthalene...

High quality fruits are increasingly demanded along with the need to ensure this attribute to consumers. Thus, this study was aimed at characterizing a melting ('Elegant Lady') and a non-melting flesh ('Carson') peach (Prunus persica (L.) Batsch) varieties by considering both their bioactive compound contribution and their sensory quality in ripe f...

The objective determination of the optimal harvest date for plums intended either for industrial processing or for consumption as fresh fruit is a fundamental concern of the fruit industry. A portable visible/near infrared (Vis/NIR) spectroscopic device was used to sort D'Agen plums harvested around the traditional commercial harvest date. The chlo...

The quality requirements that consumers consider in their decision to purchase fresh fruit have garnered a great deal of attention from the actors in the fresh fruit productivity chain. This study seeks to identify attributes that could explain how a consumer of fresh peaches perceives quality. The focus on the peach was because of the limited know...

Perceived quality in fresh peaches: an approach through structural equation modeling. Cien. Inv. Agr. 38(2): 179-190. The quality requirements that consumers consider in their decision to purchase fresh fruit have garnered a great deal of attention from the actors in the fresh fruit productivity chain. This study seeks to identify attributes that c...

The objective determination of the optimal harvest date for plums intended either for industrial processing or for consumption as fresh fruit is a fundamental concern of the fruit industry. A portable visible/near infrared (Vis/NIR) spectroscopic device was used to sort D'Agen plums harvested around the traditional commercial harvest date. The chlo...

There is increasing consumer dissatisfaction regarding the quality of peaches due to the rapid decay that these fruit undergo after harvest.This study aimed to determine the phenolics contents and provide sensory characterisations of four commercial melting flesh (MF) and four commercial non-melting flesh (NMF) peach cultivars. Low molecular weight...

Fruit Quality Quality Characteristics of Stone Fruits Classical Breeding Inheritance of Quality Fruit Traits Molecular Breeding

Introduction. The aim of this study was to determine the ability of an electronic nose (e-nose) to predict the quality of nectarines and peaches, and, in particular, the aroma. Materials and methods. Four nectarine cultivars ('Maria Dolce', 'Maillarlate', 'Nectaross' and 'Venus') and one peach cultivar ('Royal Glory') were evaluated. The fruit was...

The pomegranate (Punica granatum L.) is a temperate climate species requiring high temperatures for proper and complete ripening. The species is consumed as a fresh fruit, but also can be used to obtain transformed products such as juice, jam, or preserve. It is a fruit tree species with a high degree of diversity, but the identification of cultiva...

Fruit quality has been described as a property that depends on many factors. Harvest time is one such factor, described as negatively affecting the fruit quality of peaches and nectarines when carried out at early stages of maturity. In order to assess this, fruit from peach cultivars ‘2B40’, ‘Elegant Lady’ and ‘Sweet September’, and nectarine cult...

Heat treatment could be an alternative to delay enzymatic browning and firmness losses for fresh cut peaches. Different heat times and processing degrees on fruit could change the effectiveness of the treatment. In addition, the quality of fresh cut peach fruit could be affected by the heat treatment. Short-term heat treatments on quality of fresh-...

Currently, consumers demand a high appearance and safety quality of fresh cut fruit without using chemical treatments. For that reason, new friendly environmental alternatives are being studied to delay enzymatic browning and firmness losses in order to prolong the shelf life of fresh cut peach. The effect of mild heat treatments on the quality of...

Stone fruit consumers usually complain for the poor eating quality of the product in the marketplace. Delayed cooling (preconditioning) is a technique used commercially on peaches, nectarines and plums for improving the fruit quality and postharvest performance. We evaluated the effect of preconditioning of 'Goldrich' and 'Robada' apricots on two m...

Generally, the orchard productivity is function of the vegetative- reproductive equilibrium of the trees. If this does not occur, excess of vegetative growth would reduce light penetration in the canopy, decreasing blooming, fruit set and fruit quality, and increasing fruit physiological disorders incidence. Pre-harvest application of Calcium prohe...

Apricots are stone fruits with a rather short shelf-life. To extend their postharvest life, the fruits are commonly maintained at low temperature. Nevertheless, chilling injury symptoms like flesh woolliness and browning are developed. To improve their postharvest life, the effect of intermittent warming heat shock (IWHS) (39°C for 7 hours after 12...

The influence of flesh firmness on consumer acceptance and its relationship with total soluble solids concentration (TSSC), titratable acidity (TTA) and sensory analysis was studied to understand their interaction in determining acceptance judgments, for different organoleptic typologies of peaches and nectarines. The investigation was carried out...

The influence of flesh firmness on consumer acceptance and its relationship with total soluble solids concentration (TSSC), titratable acidity (TTA) and sensory analysis was studied to understand their interaction in determining acceptance judgments, for different organoleptic typologies of peaches and nectarines. The investigation was carried out...

The influence of flesh firmness on consumer acceptance and its relationship with total soluble solids concentration (TSSC), titratable acidity (TTA) and sensory analysis was studied to understand their interaction in determining acceptance judgments, for different organoleptic typologies of peaches and nectarines. The investigation was carried out...