Inter- and Intra-Varietal Genetic Variability in Vitis vinifera L.

Meneghetti, Stefano; Bavaresco, Luigi; Calò, Antonio; Costacurta, Angelo

doi:10.5772/52847

Cited by 5 publications

(5 citation statements)

References 21 publications

(24 reference statements)

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“…The sepals are covered by petals when they grow which upon degeneration connect at their top portion and form a cap like structure [63,64] to save the reproductive parts of vine. As already described in Table 1 during ower opening the cap like organ of vine gets dislodged due to growing laments of androecium [38,39,40,41]. Through union of two carpels the female reproductive organ of vine is formed [71,72,73].…”

Section: Discussionmentioning

confidence: 99%

WITHDRAWN: Phenological stages of growth in grapevine (Vitis vinifera L.) via codes and details as per BBCH scale

Manzoor

Sultan²,

Kumar

et al. 2023

Preprint

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Background Considering the phenological aspects, Vitis vinifera has peculiar position in the plant kingdom exhibiting various phenophases from dormancy until senescence viz., budburst, bloom, berry-set, ripening and harvesting. Just like other systems of agriculture and horticulture, grape orchardists and scientists require various types of scales which are convenient, globally accepted, error-free and reliable to study its growth and development. Materials and methods In this study, the details of specific phenological stages of grapevine were measured with the help of Biologische Bundesanstalt, Bundessortenamt, und Chemische Industrie (BBCH) scale. The BBCH-scale employs decimal coding with additional drawings into it for defining the phenology of grapevine with first digit showing principal growth stage of growth and the second digit the secondary stage of growth corresponding to ordinal number or percentage value. Results In this study, the phenological stages of growth in grapevine covering the entire cycle of growth, from with sprouting and ending upon senescence were identified and discussed. The stages are divisible into seven principal growth stages; two representing vegetative phase (sprouting (0) and leaf development (1)) and four stages describing reproductive growth (inflorescence emergence (5), flowering (6), development of fruits (7), ripening of berries (8)) and last stage is for senescence (9) as per BBCH scale. In the principal stages of growth a total of 17 secondary stages of growth Conclusion The phonological growth stages of grapevine have been detailed as per BBCH scale via codings distinguishing its vegetative and reproductive cycle.

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Section: Discussionmentioning

confidence: 99%

WITHDRAWN: Phenological stages of growth in grapevine (Vitis vinifera L.) via codes and details as per BBCH scale

Manzoor

Sultan²,

Kumar

et al. 2023

Preprint

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“…Clonal variation has also been reported within ancient Portuguese grapevine varieties [38]. It should be stressed that most of the reported molecular mechanisms underlying clonal variation are still unknown [35,36].…”

Section: Genetic Relationships Among Pear Genotypesmentioning

confidence: 90%

“…Minor genetic variation was observed among the different "Rocha" clones, which could be due to somatic mutations related to grafting [35] or, in some cases, the results of hybridization with unknown pear plants. Previously, a great variability and heterogeneity was referred among Malvasia grapevine clones that were cultivated in different geographic areas [36,37]. Clonal variation has also been reported within ancient Portuguese grapevine varieties [38].…”

Section: Genetic Relationships Among Pear Genotypesmentioning

confidence: 93%

Genetic Diversity and Structure of the Portuguese Pear (Pyrus communis L.) Germplasm

et al. 2019

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A rich heritage of traditional pear varieties is kept in national Portuguese collections. Out of these varieties, "Rocha" dominates national pear production. Although a noticeable phenotypic variation among clones of this variety has been reported, little is known about its genetic variability, as to date molecular studies have been performed on a single "Rocha" clone. Eleven Simple Sequence Repeats (SSR) markers were used to assess the genetic diversity of 130 local cultivars, 80 of them being "Rocha" clones. The results allowed the differentiation of 75 genotypes of which 29 are "Rocha". Three synonyms groups and four homonymous groups of other local varieties were confirmed. A Bayesian model-based clustering approach identified two distinct clusters. Using flow cytometry, six cultivars were found to be triploids. These results show high genetic variability among "Rocha" clones. In conclusion, there is a need for different "Rocha" clones to be preserved to enable the correct selection of the multiplication material.

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“…Vegetative propagation is usually seen as conservative of genetic constitution; however, as it results from cell division (mitosis) preceded by DNA duplication, it can give rise to mutations and/or other mechanisms of variation (Rives , Pelsy , Meneguetti et al. ). At the beginning, a variety should have been a single homogeneous clone, but those recurrent somatic mutations and other variation events transformed it into a vast group of different genotypes, morphologically homogeneous, however, markedly different in many quantitative agronomical and oenological traits.…”

Section: Introductionmentioning

confidence: 99%

Genetic correlations in grapevine and their effects on selection

Gonçalves

Carrasquinho

Almeida

et al. 2015

Australian Journal of Grape and Wine Research

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Background and Aims The evaluation of genotype‐by‐environment interaction and the genotypic correlations between important economic traits are two relevant issues of the methodology of grapevine selection that remain insufficiently explored. The aim of this study is to provide methodological tools to: (i) assess the genotype‐by‐environment interaction and (ii) evaluate the genetic correlations between traits and their practical impacts on genetic selection. Methods and Results A multi‐environment analysis for each trait and multi‐trait analyses were applied for the evaluation of genotype‐by‐environment interaction and genetic correlation between pairs of traits, respectively. The presence of genotype‐by‐environment interaction for all traits was detected. Genetic correlation between traits varied from non‐existent to strong. Conclusions This study supports and recommends the applicability of multi‐environment and multi‐trait analyses to grapevine clonal selection data. The detection of genotype‐by‐environment interaction in grapevine clones was successfully assessed. When multi‐trait models were applied they provided greater accuracy and precision in selection. Significance of the Study This study shows the importance of the mixed multivariate models for the development of the grapevine clonal selection. They should be implemented in a grapevine selection program.

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Inter- and Intra-Varietal Genetic Variability in Vitis vinifera L.

Cited by 5 publications

References 21 publications

WITHDRAWN: Phenological stages of growth in grapevine (Vitis vinifera L.) via codes and details as per BBCH scale

WITHDRAWN: Phenological stages of growth in grapevine (Vitis vinifera L.) via codes and details as per BBCH scale

Genetic Diversity and Structure of the Portuguese Pear (Pyrus communis L.) Germplasm

Genetic correlations in grapevine and their effects on selection

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