Genetic Diversity and Grouping of Litchi Genotypes Based on 83 Qualitative and Quantitative Traits

Lal, Narayan; Pandey, Shubhendra Kumar; Pandey, Sushil; Nath, Vishal

doi:10.1007/s10341-022-00747-x

Cited by 4 publications

(2 citation statements)

References 6 publications

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“…Furthermore, Singh et al (1999) has reported that the genetic characteristics of leaf is an essential parameter which will help in identi cation and classi cation of litchi cultivars. Similarly, the ndings of this study are in accordance with Lal et al (2022) and Lal et al (2023) for qualitative traits in litchi. However, above studied these qualitative traits can be utilized e ciently for identi cation and discrimination of longan genotypes.…”

Section: Discussionsupporting

confidence: 89%

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: Discussionsupporting

confidence: 89%

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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“…In this current investigation, a high heritability was observed for pollen viability. Previous research has consistently shown that high heritability implies minimal environmental influence on the genotype [59][60][61]. Therefore, minimized environmental effect on the studied trait allowed the high accuracy of 94% in the selection of genotypes under the HS conditions [40,[62][63][64].…”

Section: Pollen Sizementioning

confidence: 99%

Screening of Diploid Wild Potatoes Pollen Traits under Heat Stress

Nicolao,

Bashir,

Castro

et al. 2023

Preprint

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Screening of pollen traits in diploid wild potatoes (Solanum sect. Petota, Solanaceae) is desirable to develop heat-tolerant potato (S. tuberosum) cultivars. To accomplish this goal requires exploring potato genetic resources that are conserved in genebanks. The goal of this study was to assess pollen viability and 2n pollen production of the diploid potato wild relatives under heat stress condition. We assessed pollen viability and size of nine potato accessions conserved at the Embrapa Potato Gene Bank, including S. chacoense (BRA 00167447-2, BRA 00167017-3, BRA 00167023-1, BRA 00167028-0), S. commersonii (BRA00167007-4, BRA00167420-9, BRA00183760-8), and S. malmeanum (BRA 00183755-8), along with a control accession from the cultivated species S. tuberosum (BRA 00167251-8). The plant accessions were cultivated in different growth chambers, simulating both control temperature (ranging from 14 to 27°C) and supraoptimal temperature conditions (ranging from 24 to 34°C). At heat stress, the accessions BRA 00167251-8 did not bloom, and BRA 00167023-1 did not produce pollen. The remaining accessions did not exhibit a significant reduction in pollen viability as the temperature increased. Pollen viability at the control temperature had the lowest value in BRA-00167420-9 (S. commersonii) with 68.5% and the highest in BRA 00183755-8 (S. malmeanum) with 100%. At the supraoptimal temperature the lowest value was in BRA 00167420-9 (S. commersonii) with 54.5% and the highest in BRA 00183755-8 (S. malmeanum). The average of pollen size was 20 μm in all wild potato genotypes, and the increase of temperature did not lead to 2n pollen production. Estimated Genotypic Coefficient of Variation (GCV) was lower than Phenotypic Coefficient of Variation (PCV) for pollen viability. The observed heritability values ranged from 58.82% in BRA00167007-4 to 91.32% in BRA 00183755-8. Our results highlight the genetic variability available in wild potato germplasm concerning pollen viability under heat stress. Furthermore, these first insights offer valuable guidance for ongoing and future endeavors in diploid potato breeding.

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Genetic Variability Studies Based on Morphological and Physicochemical Characteristics Among Different Longan (Dimocarpus longan Lour.) Genotypes Under North Bihar Conditions

Kumar,

Gupta,

Kanth

et al. 2023

Preprint

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The present experiment was carried out in a randomized complete block design (RCBD) with three replications to study morphological variability, genetic variability, heritability, and genetic advance for different traits of twenty genotypes. The results indicated that the genotypes were diversified for all the quantitative and qualitative traits except a few qualitative traits. The phenotypic coefficient of variation (PCV) showed higher than the genotypic coefficient of variation (GCV) which indicates the meager effect of environment on the phenotypic expression of traits. The high heritability coupled with high genetic advance as percent of mean were recorded for the traits viz., plant height, trunk girth, crown diameter, tree volume, rachis and petiole length, duration of panicle imitation, 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, titratable acidity and TSS acid ratio. Therefore, these traits can be used as selection indices for indirect selection for the crop improvement programmes. On the basis of mean performance found best performing genotypes LGC-6 for yield attributing and fruit quality traits.

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Genetic Diversity and Grouping of Litchi Genotypes Based on 83 Qualitative and Quantitative Traits

Cited by 4 publications

References 6 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

Screening of Diploid Wild Potatoes Pollen Traits under Heat Stress

Genetic Variability Studies Based on Morphological and Physicochemical Characteristics Among Different Longan (Dimocarpus longan Lour.) Genotypes Under North Bihar Conditions

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