Contribution of seed traits to the genetic diversity of a segregating population of Passiflora spp.

Torres, Géssica Xavier; Viana, Alexandre Pío; Vieira, Henrique Duarte; Rodrigues, Daniele Lima; Santos, Valquíria Oliveira dos

doi:10.4067/s0718-58392019000200288

Cited by 14 publications

(17 citation statements)

References 16 publications

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“…The results obtained in this study and those described by Torres et al (2019), Fachi et al (2019, and Krause et al (2017) clearly demonstrate that the contribution of each variable to determine genetic divergence can vary according to species, genotype, and family.…”

Section: Digital Phenotyping Meanssupporting

confidence: 76%

“…The gray level difference method evaluates the texture features that describe the size and highlights of the image (Bharathi and Subashini, 2013 Torres et al (2019) evaluated genetic diversity in a segregating population of passion fruit based on seed morphological and physiological descriptors and found that the texture variables were those that most contributed to genetic diversity. Similarly, the T1 variable (Laws: ER) was one of the variables that most contributed to genetic diversity, in this study.…”

Section: Digital Phenotyping Meansmentioning

confidence: 99%

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Digital Phenotyping in Inbred Guava Lines: Seed Characterization

Silva¹,

Vieira²,

Viana³

et al. 2021

FPBJ

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Guava, Psidium guajava L., is a species of economic importance for several countries. The production of new varieties of guava from seeds with good germination and vigor potential has been investigated. In this scenario, the present study characterized and estimated the genetic diversity of seeds of 42 genotypes of guava from an S2 family based on germination response, vigor tests, and digital phenotyping analysis. The experiment was laid out in a randomized-block design with four replicates. Descriptive statistics were carried out for each of the analyzed variables and multivariate analyses were used to estimate genetic diversity based on Gower's Distance. Digital analysis was performed using the GroundEye S120 system, which extracted color, geometry, texture, and histogram data. In total, three color, two geometry, five texture, four physiological analysis, and 17 histogram variables were used. The physiological variables and those obtained by digital phenotyping were efficient to discriminate the genotypes, indicating that there is genetic variability to be exploited within the guava breeding program. The traits that most contributed to genetic diversity were those related to the histogram. The genotypes belonging to groups I and III had the highest means for germination percentage, thousand-seed weight, and shoot length. Based on the results, two options are viable for conducting the guava breeding program. The most vigorous individuals can be self-pollinated for the development of lines and the superior and most divergent ones from groups I and III can be crossed to exploit heterosis. Thus, crosses between the most vigorous individuals from groups I and III are recommended, as they exhibited higher means for the traits of germination percentage, thousand-seed weight, and shoot length.

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Section: Digital Phenotyping Meanssupporting

confidence: 76%

Section: Digital Phenotyping Meansmentioning

confidence: 99%

Digital Phenotyping in Inbred Guava Lines: Seed Characterization

Silva¹,

Vieira²,

Viana³

et al. 2021

FPBJ

Self Cite

View full text Add to dashboard Cite

show abstract

“…In general, the clusters reflected the phenotypic variability observed in these species (Torres et al, 2019). The similarity rates were not so high since they are allogamous species, with sexual reproduction preferred, so there was manifest variability with no consistent formation of groups in terms of geographical origin or species, but there was lax distribution of the materials in terms of the evaluated municipalities, with inter-and intraspecific variability that can be used to obtain new planting materials.…”

Section: Resultsmentioning

confidence: 91%

Characterization of the genetic diversity in Passiflora spp. in the Boyacá Department, Colombia

Martínez

Morillo

Reyes-Ardila

2020

Chil. j. agric. res.

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Passiflora is a group of species of economic importance in Colombia because of their productive potential and nutritional, pharmaceutical and industrial properties; therefore, it is necessary to study the genetic diversity of the species cultivated in principal productive departments, such as Boyacá. The use of molecular markers has become a fundamental tool for germplasm characterization, which effectively complements morphological and agronomic information. This research aimed to characterize the genetic diversity of Passiflora spp. grown in the Department of Boyacá using inter-simple sequence repeat (ISSR) markers. The eight ISSRs generated a total 138 bands with molecular weights between 250 and 1350 kb. With a similarity coefficient of 0.60, seven groups were formed, showing lax distribution of the individuals. The percentage of polymorphic loci was between 56% (TG) and 90% (AG). The average value of heterozygosity was 0.56 with a genetic differentiation coefficient (FST) of 0.16, which indicated great genetic diversity but without a defined population structure. The AMOVA showed that 64% of the observed genetic variation was due to the component within the groups. The results suggested levels of hierarchy and subdivision finer than those considered in this study, in addition to a complementary morphoagronomic characterization that established the total genetic diversity, which can be used to implement a breeding program for more productive cultivars that are resistant to the principal phytosanitary problems.

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“…Seed traits can be used in the initial investigation of genetic diversity. Great genetic variability was recorded in the grain productivity property based on genetic parameters (Nascimento-Júnior et al, 2018;Torres et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Effects of shape and size of hybrid maize seed on germination and vigour of different genotypes

Tabaković

Simić

Stanisavljević

et al. 2020

Chil. j. agric. res.

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The uniform seed material is a prerequisite of stable yields. Therefore, the aim of the study was to observe variability of physiological seed traits depending on the classification of seeds by size and shape, and to determine advantages of large over small seed fractions. Three maize (Zea mays L.) hybrids (ZP 505, ZP 677, ZP 684), produced in two locations (Orahovo, Plavna), were classified into six fractions; small flat seed (SFS), medium small flat seed (MSFS), large flat seed (LFS), small round seed (SRS), medium small round seed (MSRS) and large round seed (LRS). Two laboratory treatments were applied on seed: TR1 (cold test) and TR2 (20/30 ºC). In both temperature treatments, the first evaluation was done after 72-h germination, and then every 24 h until 7 th day. The highest total germination (G) was recorded for ZP 677 (93.7%), location Orahovo (94.9%), temperature TR2 (95.2%) and MSFS fraction (89.7%). The total proportion of factors in the variance for G was R 2 = 0.694. Locations and genotypes predominantly affected the germination rate (GR), η = 0.338. Flat fraction seeds had more rapid emergence (> 90%) of seedlings than the round fraction seeds (> 85%). Round seeds were more susceptible and seed size had a greater effect on vigour than LRS, 70%. The partial effect of the fraction on G was not estimated (η = 0.037), but its cumulative effect with other factors was evident (Hybrid × Fraction, η = 0.070).

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Contribution of seed traits to the genetic diversity of a segregating population of Passiflora spp.

Cited by 14 publications

References 16 publications

Digital Phenotyping in Inbred Guava Lines: Seed Characterization

Digital Phenotyping in Inbred Guava Lines: Seed Characterization

Characterization of the genetic diversity in Passiflora spp. in the Boyacá Department, Colombia

Effects of shape and size of hybrid maize seed on germination and vigour of different genotypes

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