Studies on Genetic Variability and Correlation among the Different Traits in Solanum lycopersicum L.

Bernousi, Iraj; Emami, Aliyeh; Tajbakhsh, Mahmood; Darvishzadeh, Reza

doi:10.15835/nbha3915859

Cited by 21 publications

(20 citation statements)

References 17 publications

(10 reference statements)

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“…This association shows that the increase in FWidth leads to the increase in FW as well. Bernousi et al (2011) recorded positive significant correlation for FW with FWidth and FL which is in harmony with our results. Islam et al (2010) also estimated positive significant correlation of fruit diameter/width both at genotypic and phenotypic levels with individual FW and yield plant -1 which indicated that as the diameter of fruits increases the individual FW and yield plant -1 would increase.…”

Section: Discussionsupporting

confidence: 92%

“…Morphological description and classification is a traditional approach to quantify genetic differences, and is often used for genetic diversity analysis (Khadivi-khub et al 2008;Nikoumanesh et al 2011;Terzopoulos & Bebeli 2008;). In tomato, yield is the cumulative effect of many components contributing individually to yield (Bernousi et al 2011). Different characteristics viz.…”

Section: Introductionmentioning

confidence: 99%

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Genetic Diversity among Tomato Accessions based on Agro-Morphological Traits

Hussain¹,

Khan²,

Ali³

et al. 2018

JSM

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Section: Discussionsupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Genetic Diversity among Tomato Accessions based on Agro-Morphological Traits

Hussain¹,

Khan²,

Ali³

et al. 2018

JSM

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“…In strawberry (Fragaria •ananassa), Monma and Takada (1991) found negative correlations between TYLD and both SS and ACID. In tomato (Solanum lycopersicum), Bernousi et al (2011) found weak positive correlations between TYLD and ACID and SS, and Ramana et al (2007) found ACID and SS were not significantly correlated with TYLD. Our results are similar to those of Rakonjac (2006), who found a positive genetic correlation between TYLD and SS and a negative correlation between TYLD and ACID content in peach (Prunus persica).…”

Section: Discussionmentioning

confidence: 99%

Genetic Parameters and Development of a Selection Index for Breeding Red Raspberries for Processing

Stephens¹,

Alspach²,

Beatson³

et al. 2012

J. Amer. Soc. Hort. Sci.

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New commercial red raspberry (Rubus idaeus) cultivars suited to machine-harvesting and processing markets need to be high-yielding and have good fruit quality attributes, including fruit firmness, sugar content, acidity, flavor, and health properties. Combining many traits in one genotype is a challenge for breeders, especially for traits negatively correlated with yield. Despite its potential, the use of multiple-trait selection through selection indices has had limited application in fruit breeding. In this study, we estimated variance components, heritabilities, phenotypic and genetic correlations and breeding values for total yield (TYLD), harvest span, mid-harvest day and fruit quality traits, firmness (FIRM), soluble solids (SS), acidity (ACID), total anthocyanins (TACY), and total ellagitannins (TELG) from 1008 seedling genotypes based on 85 families derived from 45 parents harvested over three seasons in Washington state. Narrow-sense heritability estimates ranged from moderately low (0.22 for TYLD) to moderately high (0.73 for SS). All traits measured had positive genetic correlations with TYLD except for ACID (–0.35) and TACY (–0.28). Genotype × year (G×Y) interaction was high for TYLD and low for fruit quality attributes FIRM, SS, ACID, TACY, and TELG, and interactions were higher between the first (2009) and second (2010) seasons than between the second (2010) and third (2011) seasons. Using economic weights and breeding values derived from multivariate analysis for TYLD, FIRM, SS, and TACY, we constructed a selection index designed to assist with multiple-trait selection for population improvement and the development of commercial raspberry cultivars.

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“…Quantitative traits have been previously used for similar studies in tomato. As for example, Henareh et al (2015) studied 21 quantitative traits in 97 tomato accessions from Iran and Turkey, Bernousi et al (2011) surveyed 25 tomato genotypes with the help of 19 morphological traits; Bhattarai et al (2016) analyzed 71 tomato genotypes with 8 morphological traits. All these studies revealed significant variation among the studied genotypes.…”

Section: Discussionmentioning

confidence: 99%

“…The use of morphological markers and agronomic traits has been extensively applied in studying genetic variation in plants. Compared to molecular markers and biochemical methods, morphological markers are very easy, more direct and less costly (Bernousi, 2011). Estimation of genetic diversity in tomato has been carried out by many researchers in the world using morphological approaches (Hu et al, 2012;Chernet et al, 2014;Osekita and Ademiluyi, 2014;Sacco et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Exploring morphological variation in tomato (Solanum lycopersicum): A combined study of disease resistance, genetic divergence and association of characters

Kouam¹,

Dongmo²,

Djeugap³

2018

Agricultura Tropica Et Subtropica

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Genetic variation of quantitative traits is a prevalent characteristic among cultivated tomato varieties. Twenty tomato genotypes comprising indigenous varieties and commercial cultivars, cultured in the Western Region of Cameroon were evaluated using fourteen quantitative traits for disease resistance, phenotypic divergence and heritability estimates. The experiment was carried out using a randomized completed blocks design with three replications. Data collections were disease characteristics, plant development features and yield attributes. The analysis of variance revealed significant variation among genotypes for all the experimental quantitative traits. Hybrid varieties had significantly more fruit yield (1066.00 g/plant), single fruit weight (57.28 g), fruit diameter (4.47 cm) and pericarp thickness (0.54 cm) compared to standard and indigenous varieties. These indigenous varieties were significantly more resistant to late blight, alternaria leaf spot and viral diseases. They also had significantly higher collar diameter (16.30 mm), number of primary branches per plant (8.45), number of fruit per plant (31.58) and plant height (88.33 cm) compared to standard and hybrid plants. The genotype local 2 was the third most productive (1576.39 g / plant) after Rio Semagri (1984.80 g/plant) and Sakato F1 (1691.69 g/plant). Heritability and genetic advance estimates were high for twelve of the fourteen studied quantitative traits. Fruit yield showed significant positive correlations with single fruit weight and number of fruit per plant. However, significant negative correlation was found between fruit yield and time to 50 % flowering, 50 % fruiting, 50 % maturity and viral disease. The first three and the first four components in the principal component analysis explained, respectively, 77.85 % and 88.38 % of the total variation observed among genotypes. The first component determined 41.42 % of the total variation, dominated by the collar diameter, the number of primary branches per plant and plant height. This study clearly indicated that indigenous varieties are the most disease resistant genotypes and are having substantial fruit yield (945.30 g/plant) similar to standard varieties and at a touching distance to hybrid cultivars.

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Studies on Genetic Variability and Correlation among the Different Traits in Solanum lycopersicum L.

Cited by 21 publications

References 17 publications

Genetic Diversity among Tomato Accessions based on Agro-Morphological Traits

Genetic Diversity among Tomato Accessions based on Agro-Morphological Traits

Genetic Parameters and Development of a Selection Index for Breeding Red Raspberries for Processing

Exploring morphological variation in tomato (Solanum lycopersicum): A combined study of disease resistance, genetic divergence and association of characters

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