Genetic Variability in Inbred Guava Families Mediated by Agronomic Traits

Krause, Willian; Cavalcante, Natan Ramos; Viana, Alexandre Pío; Ambrósio, Moisés; Santos, Eileen Azevedo; Vieira, Henrique Duarte

doi:10.35418/2526-4117/v3n2a5

Cited by 3 publications

(4 citation statements)

References 14 publications

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“…According to Arevalo et al (2021), if the first two canonical variables allow estimates above 80% of the total variation, it is possible to satisfactorily explain the variability between genotypes in a two-dimensional dispersion plot. Similar results were found by Fachi et al (2019) and Krause et al (2021), in which the first two canonical variables also explained 100% of the total variation.…”

Section: Resultssupporting

confidence: 89%

Strategies for the next cycles of intrapopulation improvement of sour passion fruit

Fachi

Krause

Lima

et al. 2023

Rev. bras. eng. agríc. ambient.

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In breeding programs, the identification of genetic variability and knowledge of genetic constitutions existing within segregating populations are of fundamental importance for the success and continuation of the program. The present study aimed to quantify the genetic diversity among progenies of a sour passion fruit population based on morphoagronomic variables of flowers and fruits using the Ward-MLM (modified location model) procedure, which was efficient in quantifying genetic diversity and allowed the identification and consistent formation of three groups within the population. Among the groups formed, group I presented the highest means for the variables related to flowers, group II presented the highest values for the variables related to yield, and group III presented the highest means for the variables related to fruit quality. The androgynous length, nectariferous chamber length, anther surface, nectareous chamber length, and stigma surface were the variables that most contributed to the divergence between the evaluated genotypes. Crosses between groups II and III genotypes are promising for the next cycle, contributing to increased production and improvement of the physical and chemical quality of fruits.

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Section: Resultssupporting

confidence: 89%

Strategies for the next cycles of intrapopulation improvement of sour passion fruit

Fachi

Krause

Lima

et al. 2023

Rev. bras. eng. agríc. ambient.

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“…The results from the present investigation support the view that morphology and chemical composition in fruits can be utilized efficiently for cultivar discrimination and estimating the genetic relationships in the diverse groups of guava germplasm. These results, which follow those of earlier research, show that both quantitative and qualitative traits are essential for cultivar identification and evaluation in guava germplasm for traits like fruit dots, puffiness, texture, surface, cavity, pulp taste, etc., which are of interest to taxonomists or breeders (17,32). Similarly, quality traits are the most important factor in attracting consumers and farmers.…”

Section: Morphological Traitsmentioning

confidence: 99%

“…and breeder-preferred traits (photosensitivity, pest and disease resistance, etc.). A qualitative technique has been used by (17) for evaluating the fruit diameter of the calyx cavity relative to fruit diameter, skin color, pulp color, and surface texture traits. Similarly, researchers worked on different qualitative traits (18,19).…”

Section: Introductionmentioning

confidence: 99%

Assessing the genetic diversity of guava germplasm characterized by morpho-biochemical traits

Gangappa

Singh²,

Verma³

et al. 2022

Front. Nutr.

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Amid environmental crises, a galloping population, and changing food habits, increasing fruit production with nutritional quality is a global challenge. To address this, there is a necessity to exploit the germplasm accessions in order to develop high-yielding varieties/hybrids with good adaptability and high quality fruit under changing environmental and biological conditions. In the study, a total of 33 morpho-biochemical traits enabled an assessment of the genetic variability, diversity, and structure in a collection of 28 diverse germplasm lines of guava. Results showed that highly significant genetic variability existed in the studied traits in the guava germplasm. The coefficient of variation values for the qualitative and quantitative traits varied from 23.5–72.36 to 1.39–58.62%, respectively. Germplasm Thai, Lucknow-49, Punjab Pink, Psidium friedrichsthalianum, and Shweta had the highest fruit weight (359.32 g), ascorbic acid content (197.27 mg/100 g fruit), total phenolic content (186.93 mg GAE/100 g), titratable acidity (0.69 percent), and antioxidant capacity (44.49 μmolTrolox/g), respectively. Fruit weight was positively correlated with ascorbic acid content; however, titratable acidity was negatively correlated with fruit weight. The principal component analysis (PCA) was 84.2% and 93.3% for qualitative and quantitative traits, respectively. Furthermore, K-mean clustering was executed; the population was grouped into three clusters for both traits. Additionally, the dendrogram using agglomerative hierarchical clustering (AHC), where all the germplasm were grouped into four clusters, revealed that among the clusters, clusters III and IV were highly divergent. The high variability, diversity, and structure could be utilized for the breeding programme of guava and also explored for molecular analysis using next-generation technology to enhance the guava yield and nutrition properties and also develop the climate resilient technology to fulfill the existing demand gap and nutrition availability, which could not only mitigate the nutrition requirement but also enhance the easy availability of fruits year-round.

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“…Despite this, the success of the selection does not depend solely on genetic variability, but rather on the ability of maintaining and fixing the desirable agronomic traits in the genotypes under consideration. As such, achieving inbred families proves to be effective in this regard, in which it becomes possible the allele fixation of the agronomic traits of interest and the obtaining of plants with high yield, earliness, and homogeneity within the families, thereby providing selection success with the generation progress of guava trees under inbreeding (KRAUSE et al, 2017;KRAUSE et al, 2021;AMBRÓSIO et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Coefficient of repeatability, stability,and adaptability estimates for Psidium guajava S1 progenies via mixed models

et al. 2023

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This study intends to estimate the coefficient of repeatability for traits relating to yield, so as to infer what is the minimum number of evaluations required to identify superior genotypes; to verify adaptability and stability; to predict genetic gains; and to select the best families and in S1 progenies of Psidium guajava. Families were obtained by means of self-fertilization of superior genotypes (full sibs) from the guava tree genetic breeding program of the UENF. The experiment was implemented at the Experimental Station of Ilha Barra do Pomba, in the municipality of Itaocara-RJ. In this case, an experimental randomized block design was used with 18 inbred families, three replicates, and ten plants per plot. Inbred families were evaluated in three harvests regarding fruit weight, number of fruits per plant, and total yield. It was then conducted an analysis of repeatability, adaptability, and stability of genotypes by means of the Selegen/REML/BLUP program. Repeatability values show that the performance of genotypes is constant among measurements, suggesting the need to perform only three evaluations for the selection of superior genotypes. There was agreement on the choice of families 1, 4, 6, and 12 as the most yielded, adaptable, and stable for the traits evaluated.

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Genetic Variability in Inbred Guava Families Mediated by Agronomic Traits

Cited by 3 publications

References 14 publications

Strategies for the next cycles of intrapopulation improvement of sour passion fruit

Strategies for the next cycles of intrapopulation improvement of sour passion fruit

Assessing the genetic diversity of guava germplasm characterized by morpho-biochemical traits

Coefficient of repeatability, stability,and adaptability estimates for Psidium guajava S1 progenies via mixed models

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