Prospects of Biotechnology in Grape Breeding

2015 ◽  
Vol 5 (1) ◽  
pp. 565-573
Author(s):  
Andekelile Mwamahonje ◽  
Deusdedit Kilambo ◽  
Leon Mrosso ◽  
Tileye Feyissa
Keyword(s):  
Genetic Improvement ◽  
Vitis Vinifera L ◽  
Biotic And Abiotic Stresses ◽  
Breeding Programs ◽  
Conventional Breeding ◽  
Bacterial Diseases ◽  
Grape Varieties ◽  
Breeding Techniques ◽  
New Strategies ◽  
Grape Breeding

Genetic improvement of grape cultivars to obtain high quality wine and table grape varieties by conventional breeding methods has been difficult and time consuming. The elite grape varieties developed by conventional breeding techniques have less resistance to fungal and bacterial diseases, drought, quality and yield per plant. Breeding programs of grapes are difficult due to lack of true bred from seed and few traits of importance. Though most grapes constitute large number of genes, they have less effect in tolerating biotic and abiotic stresses. Genetic improvement of grapevine (Vitis vinifera L.) through application of biotechnological techniques provide new strategies in grape breeding programs based on rapid selection or induction of desired traits by marker assisted breeding, genetic engineering and plant tissue culture. This review paper therefore, aims to discuss biotechnological techniques proposed for improvement of grape breeding.

scholarly journals Identification of disease resistance-linked alleles in Vitis vinifera germplasm

2019 ◽  
Vol 13 ◽  
pp. 01004
Author(s):  
Maria Lucia Prazzoli ◽  
Silvia Lorenzi ◽  
Michele Perazzolli ◽  
Silvia Toffolatti ◽  
Osvaldo Failla ◽  
...  
Keyword(s):  
Vitis Vinifera ◽  
Ssr Markers ◽  
Genetic Resistance ◽  
Wine Quality ◽  
Breeding Programs ◽  
Relationship Analysis ◽  
Central Asian ◽  
Grape Varieties ◽  
Group Pattern ◽  
Grape Breeding

Introgression of genetic resistance to fungal diseases from American and Asian Vitis species traditionally pursued in grape breeding programs, although facilitated by molecular tools, has an impact on wine quality that still slows down development of competitive varieties. A contribution to the genetic improvement of grapevines for resistance to pathogens may come from unexplored genetic resources of the Eurasian Vitis vinifera L. In the present study, a hundred grapevine accessions from Georgia, Armenia and Azerbaijan were genotyped with SSR markers linked to QTLs for resistance to downy and powdery mildew, and with 21 SSR markers widely used for genetic diversity and relationship analysis. Looking at population genetic structure, Armenian and Azerbaijani accessions fell within the same cluster and were included among the Central Asian grape varieties of a homogeneous dataset, while Georgian accessions formed a separate group. Pattern of SSR alleles flanking the locus Ren1 and associated with resistance to Erysiphe necator in 'Kishmish vatkana', 'Dzhandzhal kara' and other Central Asian cultivars were found in three varieties from the Azerbaijani population that reached very high scores when assessed for PM resistance.

scholarly journals High Resolution Melting (HRM) analysis on VviDXS to reveal muscats or non-muscats among autochthonous Greek wine producing grape varieties

OENO One ◽  
2016 ◽  
Vol 50 (3) ◽  
Author(s):  
Georgios Merkouropoulos ◽  
Ioannis Ganopoulos ◽  
Andreas Doulis ◽  
Nikolaos Nikolaou ◽  
Photini Mylona
Keyword(s):  
High Resolution ◽  
High Resolution Melting ◽  
Single Step ◽  
Maturity Stage ◽  
Single Nucleotide ◽  
Breeding Programs ◽  
Hrm Analysis ◽  
Fruit Maturity ◽  
Grape Varieties ◽  
Grape Breeding

<p style="text-align: justify;">Muscat flavor in grapes is associated with a substitution of a Single Nucleotide Polymorphism (SNP) located at position 1822 (SNP<sub>1822G&gt;T</sub>) within the coding sequence of the <em>VviDXS</em> gene. Various methods, including the use of High Resolution Melting (HRM) analysis, have been suggested to discriminate different SNP allelic states including the molecular discrimination of the muscat from the non-muscat grape varieties, thus providing the ability to minimize lengthy grape breeding programs when selecting for grape muscat flavor before the fruit maturity stage. HRM analysis on the SNP<sub>1822</sub> was performed on a group of 128 wine producing grape varieties in order to separate the muscat from the non-muscat genotypes before they are used for further breeding activities. This approach could be used either as a single-step prescreening method or in accordance with recently published methodology to elucidate on varietal characterization and authentication as these are important requirements concerning nurseries, growers and winemakers.</p>

scholarly journals SOYBEAN (GLYCINE MAX L. MERILL) GENETIC IMPROVEMENT IN ETHIOPIA: A REVIEW

2019 ◽  
Vol 7 (3) ◽  
pp. 189-199
Author(s):  
Besufikad Enideg Getnet
Keyword(s):  
Genetic Improvement ◽  
Cropping Systems ◽  
Abiotic Factors ◽  
Production Quality ◽  
Point Of View ◽  
Conventional Breeding ◽  
Crop Resistance ◽  
Leguminous Crop ◽  
Glycine Max L ◽  
Breeding Techniques

Soybean is an economically important leguminous crop. Genetic improvements of the crop have focused mainly on enhancement of seed and oil yield, development of varieties suited to different cropping systems and locations, and breeding resistant/tolerant varieties for various biotic and abiotic stresses. The concept surrounding genetic improvement of soybean has the potential to impact all aspects of the crop. Resistance to biotic and abiotic factors have a profound impact on production, quality, crop values and profitability. Plant breeders have used conventional breeding techniques for the improvement of these traits in soybean. The conventional breeding process can be greatly accelerated through the application of molecular and genomic approaches. Since the inception of soybean breeding in Ethiopia in the 1950s a remarkable success has been achieved in increasing its yield and developing varieties which fit in the vast agro-ecology of the country. Even though Ethiopia lags behind many nations from the point of view of productivity of the crop considerable achievements were made possible. The overall success in the breeding program of soybean is reviewed in this article.

Nanobiotics: Challenging the anti-microbial perspective - The game changer?

2017 ◽  
Vol 6 (10) ◽  
pp. 5518 ◽  
Author(s):  
Deepak Narang ◽  
Jeevan Singh Tityal ◽  
Amit Jain ◽  
Reena Kulshreshtra ◽  
Fatima Khan
Keyword(s):  
Bacterial Resistance ◽  
Public Health Problem ◽  
Drug Resistant ◽  
European Science Foundation ◽  
Resistance Development ◽  
Bacterial Diseases ◽  
European Science ◽  
Tremendous Impact ◽  
New Strategies ◽  
Game Changer

Antibiotics are the most important medical inventions in human history and are the invaluable weapons to fight against various infectious diseases. Multi drug resistant microorganisms are becoming a serious issue and increasingly public health problem in present day scenario. Antibiotics are becoming less useful due to increasing bacterial resistance. Development of new and more powerful antibiotics leading to drastic pathogens response by developing resistance to the point where the most powerful drugs in our arsenal are no longer effective against them. New strategies for the management of bacterial diseases are urgently needed and nanomaterials can be a very promising approach. Nanobiotics uses nano-sized tools for the successful management bacterial diseases and to gain increased understanding of the complex underlying patho-physiology of disease. (European Science Foundation. Forward Look Nanomedicine: An EMRC Consensus Opinion 2005. Available online: http://www.esf.org (accessed on 15 July 2017). The application of nanotechnologies to medicine, or nanomedicine, which has already demonstrated its tremendous impact on the pharmaceutical and biotechnology industries, is rapidly becoming a major driving force behind ongoing changes in the antimicrobial field. Present review providing important insights on nanobiotics, and their preparation, mechanism of action, as well as perspectives on the opportunities and challenges in nanobiotics.

Ampelographic characterization of white grapevine cul-tivars (Vitis vinifera L.) grown in Palestine

2015 ◽  
Vol 3 (1) ◽  
pp. 1-11
Author(s):  
Rezq Basheer-Salimia
Keyword(s):  
Genetic Diversity ◽  
Genetic Distance ◽  
Germplasm Conservation ◽  
Genetic Distances ◽  
Vitis Vinifera L ◽  
Similarity Matrix ◽  
Breeding Programs ◽  
Local Varieties ◽  
Synonymies And Homonymies

Abstract: In Palestine, grape culture consists of ecotypes and cultivars (also called local varieties), for which a large number of homonymous and synonymous designations exist as well as misnaming of cultivars. The present study is the first report using detailed ampelographic characterizations (39 informative traits) to assess genetic diversity and detect similarities among sixteen accessions collected from putative diverse grape genotypes In general, 30 descriptors presented highly and satisfactory divergent genotypes, whereas the remaining traits showed no or very little ampelographic variation. Based on the similarity matrix and the resulting dendrogram of these ampelographic data, distinguishable genotypes as well as some cases of synonymies and homonymies clearly exist. A synonymy case seemed to be in four genotypes including Jandali-Mfarad, Jan-dali-Mrazraz, Jandali, and Hamadani-Mattar, which indeed showed genetic distances of less than 0.5, sug-gesting their relatedness, and the possibility that they are the same genotype, but with different names. In addition, homonym cases also occur in the following pairs of “Marawi’s, Hamadani’s, and Zaini’s genotypes, in which each pair seems to be two distinctive genotypes. Finally, among the 16 examined genotypes, the Zaini-Baladi genotype tended to show the highest genetic distance values from the others and thus could be potentially incorporated into any further local or regional breeding programs as well as germplasm conservation.

scholarly journals Biofuel plant species and the contribution of genetic improvement

2011 ◽  
Vol 11 (spe) ◽  
pp. 16-26 ◽  
Author(s):  
Luiz Antônio dos Santos Dias
Keyword(s):  
Growth Rate ◽  
Plant Species ◽  
Genetic Improvement ◽  
Raw Materials ◽  
Environmental Security ◽  
Biodiesel Production ◽  
Special Focus ◽  
Annual Growth Rate ◽  
Breeding Programs ◽  
Improvement Programs

The paper analyses the puzzle of the food-energy-environmental security interaction, to which biofuels are part of the solution. It presents and discusses the contribution of genetic improvement to biofuels, with regard to the production of raw materials (oil and ethanol-producing plant species) and designs perspectives, opportunities, risks and challenges, with a special focus on the Brazilian scene. Bioethanol is a consolidated biofuel owing largely to the sugarcane breeding programs. These programs released 111 sugarcane cultivars and were responsible for a 20.8 % gain in productivity of bioethanol (in m³ ha-1) between 2000 and 2009. The program of Brazilian biodiesel production, initiated in 2005, had an annual growth rate of 10 % and the country is already the world's fourth largest producer. However, the contribution of breeding to biodiesel production is still modest, due to the lack of specific improvement programs for oil.

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