Assessment of genetic divergence using Mahalanobis D2analysis in mango

Indian, G; Sankaranarayanan, R; Murugesan, S.; Rajangam, J.

doi:10.53911/jae.2019.7104

Cited by 2 publications

(1 citation statement)

References 3 publications

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“…The clusters with the minimum inter-cluster distance have signi cantly lower genetic differences among their genotypes and were not reliable for hybridization programme. These results are in accordance with the ndings of previous researcher viz., Indian et al (2019) Therefore, the D 2 distance of clusters alone is not reliable for choosing the genotypes for an effective hybridization programme. Hence, the cluster distance along with the average cluster mean value will provide a more accurate result for selection of a parent for the hybridization programme.…”

Section: Cluster Analysismentioning

confidence: 99%

Assessment of variability and genetic divergence of longan genotypes (Dimocarpus longan Lour.) based on qualitative and quantitative traits

Kumar,

Gupta,

Kanth

et al. 2024

Euphytica

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Longan (Dimocarpus longan Lour.) is an important underutilized fruit crop. There is currently limited information available on the genetic background of longans, which is a key bottleneck in longan improvement. Studies on the extent of genetic variability and genetic divergence are crucial and it can provide relevant information which can be very useful for crop improvement programmes. In the present study, a total of 54 qualitative and quantitative traits were investigated of 20 different longan genotypes to determine the morphological and physiochemical traits that. Results revealed that the signi cant variability is existed in the studied traits except few. Among the qualitative traits petiole colour, lea et curvature, young leaf colour, mature leaf colour, branching density, lea et midrib colour, abundance of ower, trunk surface, fruit maturity group, and tree vigour were showed more than the average value of Shannon's diversity index. Higher PCV and GCV were recorded for several traits viz., tree volume followed by aril weight, number of fruits per branch, aril/seed weight ratio, trunk girth, TSS acid ratio, aril thickness, number of days from panicle initiation to owering, titratable acidity, width of in orescence, length of in orescence, petiole length, fruit weight, plant height, crown diameter and rachis length. High heritability estimates coupled with high genetic advance as % of mean were recorded for the traits viz., plant height, trunk girth, crown diameter, tree volume, rachis and petiole length, number of days from panicle initiation to owering, length and width of in orescence, number of fruits per bunch, fruit, aril and seed weight, aril thickness, fruit colour-a, titratable acidity and TSS acid ratio which is indicative of additive gene action and selection based on these traits would be more reliable. According to the Mahalanobis D 2 statistic, twenty diverse genotypes were grouped into eight groups. The presence of genetic divergence was also tested in cluster means by the signi cant amount of variability for various variables. Therefore, this study's ndings imply that these genotypes have variability in terms of fruit quality traits, yield and traits that contribute to yield, and other agronomic traits that could be useful in future crop improvement initiatives.

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Section: Cluster Analysismentioning

confidence: 99%

Assessment of variability and genetic divergence of longan genotypes (Dimocarpus longan Lour.) based on qualitative and quantitative traits

Kumar,

Gupta,

Kanth

et al. 2024

Euphytica

View full text Add to dashboard Cite

show abstract

Assessment of Variability and Genetic Divergence of Longan Genotypes (Dimocarpus longan Lour.) based on Qualitative and Quantitative Traits

Kumar,

Gupta,

Kanth

et al. 2024

Preprint

View full text Add to dashboard Cite

Longan (Dimocarpus longan Lour.) is an important underutilized fruit crop. There is currently limited information available on the genetic background of longans, which is a key bottleneck in longan improvement. Studies on the extent of genetic variability and genetic divergence are crucial and it can provide relevant information which can be very useful for crop improvement programmes. In the present study, a total of 54 qualitative and quantitative traits were investigated of 20 different longan genotypes to determine the morphological and physiochemical traits that. Results revealed that the significant variability is existed in the studied traits except few. Among the qualitative traits petiole colour, leaflet curvature, young leaf colour, mature leaf colour, branching density, leaflet midrib colour, abundance of flower, trunk surface, fruit maturity group, and tree vigour were showed more than the average value of Shannon’s diversity index. Higher PCV and GCV were recorded for several traits viz., tree volume followed by aril weight, number of fruits per branch, aril/seed weight ratio, trunk girth, TSS acid ratio, aril thickness, number of days from panicle initiation to flowering, titratable acidity, width of inflorescence, length of inflorescence, petiole length, fruit weight, plant height, crown diameter and rachis length. High heritability estimates coupled with high genetic advance as % of mean were recorded for the traits viz., plant height, trunk girth, crown diameter, tree volume, rachis and petiole length, number of days from panicle initiation to flowering, length and width of inflorescence, number of fruits per bunch, fruit, aril and seed weight, aril thickness, fruit colour-a, titratable acidity and TSS acid ratio which is indicative of additive gene action and selection based on these traits would be more reliable. According to the Mahalanobis D2 statistic, twenty diverse genotypes were grouped into eight groups. The presence of genetic divergence was also tested in cluster means by the significant amount of variability for various variables. Therefore, this study's findings imply that these genotypes have variability in terms of fruit quality traits, yield and traits that contribute to yield, and other agronomic traits that could be useful in future crop improvement initiatives.

show abstract

Assessment of genetic divergence using Mahalanobis D2analysis in mango

Cited by 2 publications

References 3 publications

Assessment of variability and genetic divergence of longan genotypes (Dimocarpus longan Lour.) based on qualitative and quantitative traits

Assessment of variability and genetic divergence of longan genotypes (Dimocarpus longan Lour.) based on qualitative and quantitative traits

Assessment of Variability and Genetic Divergence of Longan Genotypes (Dimocarpus longan Lour.) based on Qualitative and Quantitative Traits

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