Evaluation of Genotypes and Association of Traits in Watermelon Across Two Southern Texas Locations

Watermelon is the most important horticultural crop in Texas and is grown across the state under diverse environments. Our study was conducted in the southern region of Texas to understand genotype-by-environment interactions and the contribution of yield components to yield. To accomplish this, twenty genotypes were evaluated for important traits and characteristics at two locations, Uvalde and Weslaco TX, for two years, 2018 and 2019. The genotypes were evaluated for total yield, total fruit count, total soluble solids, rind thickness, fruit length, diameter and weight. Genotype-by-environment (G x E) interaction was not significant, possibly due to similarity in climatic conditions and nutrient management practices. In the grouped analysis, cultivars Crimson Diamond, Sunshade and the breeding line TAM 2 had a higher total yield. Path analysis showed a high direct effect for total fruit count and fruit diameter of 0.89 and 0.85, respectively. However, total fruit count had a high indirect effect of −0.44. Fruit weight was the only trait that showed a significant (p < 0.01) correlation towards total yield at r = 0.58. Neither of the high direct effects, total fruit count and fruit diameter, had a significant correlation. The study inferred that breeding resources could be optimized by reducing the testing location to only one representative location for measured traits in southern Texas. The indirect selection of total fruit or fruit diameter could result in better yield. The study suggested selecting for optimum total fruit and fruit diameter for higher yield.

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Selection of half-sib families of creole melon (Cucumis melo L.) on the Ecuadorian coast

Revista Colombiana de Ciencias Hortícolas ◽

10.17584/rcch.2019v13i2.8083 ◽

2019 ◽

Vol 13 (2) ◽

pp. 178-185

Author(s):

Francisco Espinosa ◽

Franco Alirio Vallejo ◽

Lauden Rizzo

Keyword(s):

Block Design ◽

Fruit Weight ◽

Soluble Solids ◽

Genetic Progress ◽

Randomized Complete Block Design ◽

Sib Families ◽

High Production ◽

Cucumis Melo L ◽

Fruit Diameter ◽

Selection Of

The creole melon cantaloupe is a horticultural species, whose fruits are used for human nutrition. However, no research has been reported on their genetic variability for starting breeding processes. The objective of this study was to take advantage of the variability of creole melons for genetic improvement. 20 creole melon half-sib families were selected and evaluated for production characteristics and fruit quality in order to obtain improved populations. The study was carried out in Palenque canton, Ecuador. Seeds from 20 half-sib families were used, arranged in a randomized complete block design with three replications. The differences between the families were significant for all the studied characteristics. Family 93 presented higher averages for fruit weight, fruit diameter and production (per hectare), and family 196 did so for soluble solids. The phenotypic correlations were positive and significant between the fruit weight and fruit diameter, fruit length, pulp thickness, fruit cavity, soluble solids and production. The coefficients of genetic variation, in general, were lower than the coefficients of environmental variation. The estimates of heritability broadly had a moderate magnitude (30-60%) for the 10 evaluated characteristics, and the magnitude of the expected genetic progress was low (<10%) for the fruit weight, production, and soluble solids, so the selection for high production should focus on fruit weight and soluble solids.

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Yield and quality of strawberry cultivars

Horticultura Brasileira ◽

10.1590/s0102-05362010000200015 ◽

2010 ◽

Vol 28 (2) ◽

pp. 222-226 ◽

Cited By ~ 24

Author(s):

Luis Eduardo C Antunes ◽

Nara Cristina Ristow ◽

Ana Cristina R Krolow ◽

Sílvia Carpenedo ◽

Carlos Reisser Júnior

Keyword(s):

Statistical Design ◽

Rio Grande ◽

Titratable Acidity ◽

Fruit Weight ◽

Climatic Conditions ◽

Soluble Solids ◽

Experimental Unit ◽

Rio Grande Do Sul ◽

Yield And Quality

The strawberry cultivation is an important economic activity in the Rio Grande do Sul State, Brazil, however the number of offered cultivars to the growers is reduced. The yield and quality of strawberry (Fragaria x ananassa Duch.) cultivars Camarosa, Galexia, Earlibrite, Festival, Plarionfre and Sabrosa was evaluated under the climatic conditions of Pelotas, Rio Grande do Sul State. We determined the number, mass, total soluble solids (TSS ºBrix), total titratable acidity (TTA), antocianin level and fresh fruits produced in an experimental unit. We also determined the production of fruits per hectare and per plant. The statistical design used in the experiment was of completely randomized blocks with 6 treatments (cultivars) and 4 replicates where the experimental unit was composed of 8 plants. The harvest began in the first half of August, extending to the second half of December, totalling 20 weeks. Plarionfre, Earlibrite and Festival cultivars showed higher production from the first half of October until the end of the first half of November. Camarosa reached higher productivity, mass of plants and fruit weight. There were no differences between the evaluated cultivars in the levels of TSS, antocianin, ATT and pH during the period of evaluation.

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Physico-chemical characteristics of pomegranate accessions from the Kurdistan region, Iraq

Journal of Agricultural Sciences Belgrade ◽

10.2298/jas1804355m ◽

2018 ◽

Vol 63 (4) ◽

pp. 355-366

Author(s):

Saadatian Mohammad ◽

Paiza Abdurahman ◽

Kanar Salim ◽

Pershang Younis ◽

Hewen Abdurahman ◽

...

Keyword(s):

Fruit Size ◽

Chemical Properties ◽

Fruit Weight ◽

Soluble Solids ◽

Total Phenolic ◽

Kurdistan Region ◽

Fresh Weight ◽

Fruit Length ◽

Physico Chemical ◽

Fruit Diameter

Some physico-chemical properties of ten pomegranate accessions collected from different districts in the Kurdistan region of Iraq were investigated in this paper. Considerable correlations between the characteristics studied were found and valuable pomological traits were observed. Cluster analysis showed the homonyms between some pomegranate accessions. Principle component analysis reported that the component describing the greatest variability also positively correlated with fruit weight, total aril weight, total peel weight, volume of juice, total soluble solids (TSS), fruit length, fruit diameter, pH, aril length, and 100-seed fresh weight, but negatively correlated with titratable acidity (TA). Fruit weight was firmly correlated with total aril weight, total peel weight, volume of juice, TSS, aril length, 100-seed fresh weight, fruit length and fruit diameter. The volume of juice was correlated with TSS, aril length, 100-seed fresh weight, fruit length, fruit diameter and it was observed that with an increase in the fruit size, the volume of juice increased as well. The correlation between total phenolic compounds and antioxidant capacity was not observed. The associations found among physical and chemical traits suggest that consumers should use large fruits with large arils so that they have more juice. Thus, ?Choman?, ?Raniyeh? and ?Halabja? were juicier than other accessions.

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Plant selection in F2 segregating populations of papaya from commercial hybrids

Cropp Breeding and Applied Biotechnology ◽

10.1590/s1984-70332012000300005 ◽

2012 ◽

Vol 12 (3) ◽

pp. 191-198 ◽

Cited By ~ 20

Author(s):

Eder Jorge Oliveira ◽

Gilberto de Andrade Fraife Filho ◽

Juan Paulo Xavier de Freitas ◽

Jorge Luiz Loyola Dantas ◽

Marcos Deon Vilela de Resende

Keyword(s):

Genetic Parameters ◽

Mixed Model ◽

Soluble Solids ◽

Fruit Firmness ◽

Plant Selection ◽

F2 Population ◽

The Common ◽

Mixed Model Methodology ◽

Fruit Diameter ◽

Selection Of

The objective of this paper was to estimate the genetic parameters and additive genetic values in segregating populations of papaya using the mixed model methodology. Two F2 populations from Tainung and Calimosa hybrids were evaluated. The experimental design was an augmented block with four replicates, and Golden and Calimosa cultivars were the common treatment. Estimates of individual heritability were high for fruit length (FL) and weight (FW), moderate for fruit diameter (FD), and low for total soluble solids (TSS) and fruit firmness (FF). Considering FF and TSS as main traits for selection, genotypes of Calimosa-F2 population showed better performance to FF, but worse concerning TSS. It was selected 18.3% and 24.6% of plants from Tainung-F2 and Calimosa-F2 populations, respectively. Negative correlation between TSS and FF was not able to reduce the genetic gains. The segregating populations from Calimosa hybrid are more promising for the selection of papaya lines.

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Assessment of GeneticVariability and Character Association in Yield Related Traits and Yellow Vein Mosaic Virus Disease Resistance in Okra (Abelmoschus esculentus L. Moench)

10.29321/maj.10.000558 ◽

2021 ◽

Vol 108 (december) ◽

Author(s):

Gurve VR ◽

◽

Swarna Priya R ◽

Pugalendhi L ◽

Karthikeyan G ◽

...

Keyword(s):

Mosaic Virus ◽

Total Phenolic Content ◽

Phenolic Content ◽

Fruit Weight ◽

Fruit Yield ◽

Yellow Vein ◽

Total Phenolic ◽

Character Association ◽

Fruit Diameter ◽

Selection Of

Okra is India’s most widely grown tropical and subtropical vegetable crop. Despite widespread cultivation, crop yield and productivity remain subpar. Yellow vein mosaic virus (YVMV) disease is a serious threat to Indian okra production, causing yield losses ranging from 17.09 to 96.49 per cent. In this context, the present study was aimed to assess the variability and character association of 74 elite germplasm accessions for thirteen quantitative and quality traits. High phenotypic and genotypic coefficient of variation (PCV and GCV) were observed among all evaluated traits except fruit diameter, which showed a moderate PCV and GCV. All traits had high heritability and high genetic advance, implying that the heritability was most likely due to additive gene effects. Direct selection of these traits would be advantageous for okra improvement, especially in developing a YVMV resistant genotype. Fruit yield per plant exhibited a significant and positive genotypic as well as phenotypic correlation with fruit weight, fruit length, peroxidase activity, polyphenol activity, fruit diameter, total phenolic content and plant height, whereas node at which the first flower appeared and YVMV were negatively correlated to fruit yield per plant. Correlation studies indicated YVMV resistance towards high total phenolic content, polyphenol oxidase, and peroxidase. The high positive direct effects on fruit yield per plant were observed for fruit weight followed by number of fruit per plant and total phenolic content. This study revealed that simultaneous selection of these traits can help in increasing yield and YVMV resistance.

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Soil thermal and productive responses of biodegradable mulch materials in a processing tomato (Lycopersicon esculentum Mill.) crop

Soil Research ◽

10.1071/sr15065 ◽

2016 ◽

Vol 54 (2) ◽

pp. 207 ◽

Cited By ~ 10

Author(s):

Marta M. Moreno ◽

Alicia Cirujeda ◽

Joaquín Aibar ◽

Carmen Moreno

Keyword(s):

Lycopersicon Esculentum ◽

Soil Temperature ◽

Agricultural Sector ◽

Crop Yields ◽

Total Yield ◽

Fruit Weight ◽

Climatic Conditions ◽

Barley Straw ◽

Processing Tomato ◽

Lycopersicon Esculentum Mill

Mulch materials of different origin and colour are available in the agricultural sector as sustainable alternatives to the use of polyethylene (PE). Mulching modifies soil temperature and consequently affects crop yields. This work assessed the thermal and productive responses of different mulch materials in two different geo-climatic conditions during a 3-year integrated field study on processing tomato (Lycopersicon esculentum Mill.). Two biodegradable plastic mulches (BD1, BD2), one oxo-degradable material (OB), two types of paper (PP1, PP2) and one barley-straw cover (BS) were compared with two control treatments: black PE and manual weeding (MW). Soil temperature variables (maximum, minimum and mean temperature, soil growing degree-days and soil temperature amplitude) and production variables (marketable and total yield, mean fruit weight) were considered. Thermally, PE could be considered an atypical mulch causing higher temperatures in the soil, but it is not associated with a higher yield. Responses of PE, PP2 and MW were independent of the geo-environmental conditions, whereas OB, BD1 and BD2 had similar thermal and productive responses to each other in different environments. Tomato yield was correlated positively only with the minimum soil temperature, especially when excluding PE.

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Agronomic potential of BC1F2 dwarf round tomato populations

Ciência e Agrotecnologia ◽

10.1590/1413-7054202044028819 ◽

2020 ◽

Vol 44 ◽

Author(s):

Rafael Resende Finzi ◽

Gabriel Mascarenhas Maciel ◽

Hugo Gabriel Peres ◽

Marina Freitas e Silva ◽

Joicy Vitória Miranda Peixoto ◽

...

Keyword(s):

Block Design ◽

Selection Index ◽

Genetic Material ◽

Fruit Shape ◽

Economic Benefits ◽

Fruit Weight ◽

Soluble Solids ◽

Transverse Diameter ◽

Agronomic Potential ◽

Selection Of

ABSTRACT The use of dwarf lines to obtain mini-tomato hybrids has provided agronomic and economic benefits. In Brazil, round tomatoes predominate over other varieties. The benefits of using a dwarf parent in round tomato hybrids has yet to be explored, making it important to develop dwarf round tomato lines. Backcrossing is the most suitable method to develop these lines. Evaluation and selection of the dwarf populations can improve the development of such lines. Thus, the aim of this study was to select BC1F2 populations of dwarf round tomatoes with agronomic potential and high-quality fruit. The study was conducted at the Vegetable Experimental Station of the Federal University of Uberlândia (UFU). A randomized block design was used, with 15 treatments and three replicates. The genetic material analyzed consisted of 12 BC1F2 dwarf tomato populations, plus both parents (recurrent and donor) and a commercial hybrid. The characteristics assessed were: average fruit weight (g), total soluble solids (ºBrix), number of locules (locules per fruit-1), fruit shape, pulp thickness (cm), longitudinal (cm) and transverse fruit diameter (cm), internode length (cm) and plant height (cm). The data were submitted to mean testing, multivariate analyses and a selection index. In general, average fruit weight in the dwarf populations increased significantly after the first backcross, with some fruits exhibiting a similar shape to round tomatoes. Selection of the populations UFU-DTOM7, UFU-DTOM10, UFU-DTOM5, UFU-DTOM9, and UFU-DTOM3 resulted in an estimated 6% increase in the number of locules, transverse diameter, TD/LD ratio and average fruit weight. The BC1F2 dwarf populations UFU-DTOM7 and UFU-DTOM10 were the most promising for develop inbred lines with round fruits. Despite the considerable progress achieved in this study, we suggest a second backcross, in order to obtain lines and, posteriorly, hybrids with round fruits and compact plants.

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Potassium nutrition as a strategy to mitigate salt stress in melon grown under protected cultivation

Semina Ciências Agrárias ◽

10.5433/1679-0359.2021v42n6p3219 ◽

2021 ◽

Vol 42 (6) ◽

pp. 3219-3234

Author(s):

Giordanio Bruno Silva Oliveira ◽

◽

Francisco de Assis de Oliveira ◽

Sandy Thomaz dos Santos ◽

Mychelle Karla Teixeira de Oliveira ◽

...

Keyword(s):

Salt Stress ◽

Nutrient Solution ◽

Saline Water ◽

Block Design ◽

Titratable Acidity ◽

Fruit Weight ◽

Soluble Solids ◽

Internal Cavity ◽

Potassium Nutrition ◽

Fruit Diameter

The use of saline water is one of the major challenges of agriculture, as it can cause nutritional imbalances and thus reduce crop yield. This study proposes to examine the efficiency of potassium nutrition as a salt stress-mitigating agent in melon grown in a protected environment. The experiment was laid out in a randomized-block design with ten treatments in a 2 × 4 factorial arrangement represented by two melon cultivars (McLaren and SV1044MF) and four nutrient solutions (S1 - standard nutrient solution, 2.5 dS m-1; S2 - nutrient solution salinized with NaCl, 5.0 dS m-1; S3 - nutrient solution salinized with NaCl + 50% K, 6.5 dS m-1; and S4 - nutrient solution salinized with NaCl + 100% K, 7.5 dS m-1). Yield (average fruit weight, production, fruit diameter, internal cavity, and pulp thickness), quality (pulp firmness, total sugars, soluble solids [SS], vitamin C, pH, titratable acidity [TA] and SS/TA ratio) and nutritional (K, Na and K/Na ratio) variables were evaluated. Plants fertigated with standard nutrient solution showed the highest values for fruit weight (1,190.6 g), production (2,381.3 g per plant), fruit diameter (13.6 cm) and pulp thickness (2.6 cm). Cultivar McLaren produced heavier fruits (931.4 g) with larger diameter (12.4 cm) and pulp thickness (2.4 cm). The addition of NaCl to nutrient solution induced a reduction in the yield variables but did not influence fruit quality. The addition of extra K to salinized nutrient solution did not mitigate the deleterious effect of salinity on the yield of melon.

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1025 THE EFFECT OF METHANOL ON ORANGE FRUIT QUALITY

HortScience ◽

10.21273/hortsci.29.5.575c ◽

1994 ◽

Vol 29 (5) ◽

pp. 575c-575 ◽

Cited By ~ 1

Author(s):

Heinz K. Wutscher

Keyword(s):

Fruit Weight ◽

Soluble Solids ◽

Spray Application ◽

Fruit Samples ◽

Orange Fruit ◽

Tree Leaf ◽

Swingle Citrumelo ◽

Juice Content ◽

Fruit Diameter ◽

Spray Applications

Seven-year-old `Hamlin' orange on Swingle citrumelo rootstock were sprayed with 30% methanol and 0.05% Silwet surfactant. There were four treatments: one spray application 48 days, two spray applications 48 and 32 days, and three spray applications 48, 32, and 20 days before harvest on December 2, 1993, with five untreated control trees. The treatments were arranged in five replications of randomized, complete blocks throughout the orchard. There were no significant differences in fruit weight, fruit diameter, rind color, rind thickness, juice content, soluble solids, total acids, solids/acids ratio, and juice color of 30 fruit samples collected from each tree. Leaf samples collected at harvest and analyzed for 12 elements showed higher Na and Cl levels in the leaves of the trees treated with methanol once than in those treated three times.

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Genetic and Heritability Estimation of Water Apple (Syzygiumaqueum (Burm.f.) Alston)

Journal of Tropical Horticulture ◽

10.33089/jthort.v2i2.25 ◽

2019 ◽

Vol 2 (2) ◽

pp. 50

Author(s):

Fitriana Nasution ◽

Sri Hadiati

Keyword(s):

Fruit Weight ◽

Soluble Solids ◽

Leaf Width ◽

Genetic Advance ◽

Genotypic Variance ◽

Total Soluble Solids ◽

Fruit Length ◽

Heritability Estimation ◽

High Heritability ◽

Fruit Diameter

Nine different accessions of water apples were evaluated at Indonesian Tropical Fruit Research Institute(ITFRI), Solok, West Sumatera from January 2013 to December 2014. This present study was aimed to evaluate the variability, heritability, genetic advance and its characters in nine different accessions to provide useful information in the improvement program of water apples. The research used Randomized Complete Block Design (RCBD) with two replications. The ANOVA results exposed significant differences at 5% probability level for all characters. Genotypic variance on fruit weight, fruit length, fruit diameter, leaf length were broad. However, the genotypic variance on total soluble solids, leaf width were narrow. The phenotypic variation for all characters was broad. The heritability estimation was categorized as low, moderate, and high. High heritability estimation was recorded for fruit weight, fruit length, fruit diameter, and leaf diameter. Moderate heritability estimation was noticed for total soluble solids. Leaf width had low heritability estimation. High heritability and high genetic advance were observed on fruit weight.

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