Phenomics approaches: genetic diversity and variance components in a S2 guava family by seed traits

Silva, Carla Caroline Amaral da; Vieira, Henrique Duarte; Viana, Alexandre Pío; Maitan, Mariana Quintas; Santos, Eileen Azevedo

doi:10.1590/1678-4499.20200449

Cited by 4 publications

(4 citation statements)

References 24 publications

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“…The high genetic variance values resulted in high heritability (h 2 ) estimates for all variables, which ranged from 92.2, for AA, to 99.7%, for TSW. Similar h 2 results were observed for 1000-seed weight, GSI, RL, and SDW in passion fruit hybrids (Cremasco et al 2021); and for SDW, RL and TSW in seeds of S2 guava families (Silva et al 2021). The same families as in this study were evaluated by Mendes et al (2022), who reported h 2 values of 86.0 and 92.0% for AUDPCM and fruit yield, respectively.…”

Section: Genetic Parameters and Correlations Between Traitssupporting

confidence: 72%

“…Variation indices equal to or greater than unity are desirable, for having a greater chance of success in selection (Vencovsky 1987), which were identified in this study. The results of Silva et al (2021) for guava seed traits were comparable, where the high h 2 values contributed to good variation indices. SV = source of variation; df = degrees of freedom; GSI = germination speed index (%); G = germination (%); AA = accelerated aging (%); SL = shoot length (cm); RL = root length (cm); SDW = shoot dry weight (mg seedling -1 ); RDW = root dry weight (mg seedling -1 ); Area = (cm²); Dmax = maximum diameter (cm); Dmin = minimum diameter (cm); Circ.…”

Section: Genetic Parameters and Correlations Between Traitsmentioning

confidence: 73%

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Genetic gain in Passiflora seed traits from recurrent selection among full-sib families

Rodrigues

Vieira

Souza

et al. 2023

Crop Breed. Appl. Biotechnol.

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The germination potential must be considered in the selection of passion fruit genotypes, since vigorous seeds originate seedlings with a higher growth rate, resulting in superior plants with high agronomic performance. This study proposes to estimate genetic parameters and selection gain for seed traits of full-sib families (FSF) of passion fruit under recurrent selection for resistance to the cowpea aphid-borne mosaic virus (CABMV). Physical and physiological seed traits of 86 FSF were evaluated; genetic parameters, genotypic correlations between traits and genetic gains were estimated using four selection indices. There were significant differences and genetic variability between families and positive genetic correlations between variables. The best distribution of genetic gains was obtained by the Mulamba and Mock index, using the heritability coefficient and arbitrary weights. This index selected the best 26 families in terms of seed characteristics to compose the second cycle of recurrent selection for resistance to CABMV.

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Section: Genetic Parameters and Correlations Between Traitssupporting

confidence: 72%

Section: Genetic Parameters and Correlations Between Traitsmentioning

confidence: 73%

Genetic gain in Passiflora seed traits from recurrent selection among full-sib families

Rodrigues

Vieira

Souza

et al. 2023

Crop Breed. Appl. Biotechnol.

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show abstract

“…Different results were observed by Silva et al (2021), who found values of heritabilities above 90% for the variables related to seed quality in S 2 families of Psidium guajava using the Least squares method (LS).…”

Section: Genetic Parametersmentioning

confidence: 81%

Selection and genetic dissimilarity in S2 families of guava through seed attributes

Maitan,

Viana,

Vieira

et al. 2023

Rev. Ceres

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This study was developed to carry out selection, estimate genetic parameters and predict individual genetic values of 55 genotypes from S 2 families as well as estimate genetic dissimilarity based on physiological seed attributes. All S 2 genotypes evaluated were obtained from self-pollination of S 1 genotypes from the guava breeding program. The experiment was laid out in blocks with 55 S 2 genotypes and four blocks. Genetic parameters were estimated and the best genotypes were selected based on the genetic value, using the statistical method of mixed models. In addition, genetic divergence was estimated based on the mean Euclidean distance. Although heritability values were considered medium to high magnitude for germination (0.22) and germination speed index (0.35), genetic gains were obtained for all traits. Based on the evaluation of individual BLUPs, the S2 genotypes that contributed to most of the evaluated traits were: 5, 31, 85, 214, 369, 393, 398, 442, 443, 444, 449 and 529, suggesting potential to generate vigorous. Through genetic dissimilarity, it was possible to verify the formation of five distinct groups. Therefore, the selection of divergent genotypes with high average for germination is recommended for the advancement of generation in the guava breeding plant.

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“…The GroundEye ® system is an effective and promising tool to quantify genetic diversity from seed traits in an early, fast, non-destructive, and easy-to-reproduce manner (Venora et al 2007). Nonetheless, aspects related to the physiological quality of the seeds under evaluation must not be neglected, as they are important criteria for the selection of superior genotypes (Silva et al 2021). Passion fruit seeds must exhibit rapid and homogeneous germination, which allows for faster, continuous, and uniform seedling formation.…”

Section: Discussionmentioning

confidence: 99%

Genetic divergence for seed traits in Passiflora full-sib families under recurrent selection for resistance to the cowpea aphid-borne mosaic virus

et al. 2023

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Investigating the physiological potential of seeds and genetic divergence between families is essential to identify promising materials for the generation of improved populations. This study was undertaken to examine the germination potential and estimate genetic divergence between Passiflora full-sib families (FSFs) based on physical and physiological seed traits. The experiment was consisted of 86 FSFs from the first cycle of recurrent selection for resistance to the cowpea aphid-borne mosaic virus. Seeds were evaluated for 19 physical and physiological traits. Dissimilarity estimates were obtained by generalized Mahalanobis distance, and the method unweighted pair group method with arithmetic mean was employed for cluster formation. The FSFs showed high germination potential and seed vigor, with mean of 92.4%, 5.68 e 5.81 cm for germination, germination speed index (GSI) and shoot length of seedlings, respectively. Cluster analysis resulted in four groups formed, being Group I composed by 68 FSF more the control Passiflora edulis. The trait 1,000-seed weight (TSW) was the trait that most contributed to explaining the dissimilarity between families, with 31.9%. The trait GSI (physiological), TSW (physical), as well as traits provided by the GroundEye ® system (CIELab-b, hue, and circumference of seeds), were efficient in determining genetic divergence detected between the families of passion fruit. These traits can be taken as a basis in the selection of genotypes with higher physiological seed quality.

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Phenomics approaches: genetic diversity and variance components in a S2 guava family by seed traits

Cited by 4 publications

References 24 publications

Genetic gain in Passiflora seed traits from recurrent selection among full-sib families

Genetic gain in Passiflora seed traits from recurrent selection among full-sib families

Selection and genetic dissimilarity in S2 families of guava through seed attributes

Genetic divergence for seed traits in Passiflora full-sib families under recurrent selection for resistance to the cowpea aphid-borne mosaic virus

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