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| Registros recuperados: 19 | |
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| Kushnereva, V.. |
| The most effective and straightforward way of plant protection is the production of cucumber hybrids with resistance to multiple diseases. Therefore, breeding of cucumber hybrids with a combination of defensive traits is a major objective. The accurate choice of parental lines is the first step towards development of successful hybrids. A variety of methods were used in order to speed up the process of inbred line development: a range of various planting times, planting in greenhouses and hot beds, screening of germplasm for disease resistances under artificial inoculation as well as natural field conditions, high selection pressure, backcrossing, multi-stage hybridization. As a result, we have developed cucumber lines and hybrids combining complex... |
| Tipo: Poster |
Palavras-chave: Cucumber; Cucumis sativus; Podosphaera xanthii; Cladosporium cucumerinum; Pseudomonas lachrymans; Parthenocarpy; Gynoecy; Resistance; Breeding. |
| Ano: 2008 |
URL: http://hdl.handle.net/2174/275 |
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| Fălticeanu, M.; Ambarus, S.; Stoian, L.; Cristea, T.O.; Calin, M.. |
| In the breeding programs from VRDS Bacau, Romania, two gynoecious cucumber hybrids (Cucumis sativus L.), cornichon type, were obtained. The breeding methods utilized is the hybridization of two gynoecious stable and uniform lines with two monoecious parental lines. The researches fulfilled with the purpose of determining the behavior of two gynoecious hybrids obtained at VRDS Bacau in open field and plastic tunnels culture, revealed the potential production and fruits quality at the hybrids ‘Cornişa F1’ and ‘Cornibac F1’. |
| Tipo: Poster |
Palavras-chave: Cucumis sativus; Plant; Breeding; Gynoecy; Cucumber. |
| Ano: 2008 |
URL: http://hdl.handle.net/2174/241 |
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| Lotfi, M.; Salehi, S.. |
| Only a small percentage of seeds arisen by irradiated pollen include haploid embryo. Inspecting the seeds one by one for rescuing the embryos is a tedious and time consuming work which decreases haploid production efficiency in this method for cucurbit plants. Cucumber seeds formed three weeks after pollination with irradiated pollen were floated in liquid medium for about 10 days before excision of the embryos. This innovative method allowed a better development of haploid embryos; they turned to green and germinate like normal seeds and could be identified easily without the need of inspecting the seeds one by one. This method permitted an easier detection and extraction of embryos in comparison with common approach, increased the number and the quality... |
| Tipo: Poster |
Palavras-chave: Cucurbit; Cucumber; Irradiated pollen; Liquid culture; Parthenogenesis; Doubled haploid. |
| Ano: 2008 |
URL: http://hdl.handle.net/2174/234 |
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| Zhou, X.-H.; Wan, H.-J.; Qian, C.-T.; Chen, J.-F.. |
| Stable C. sativus-hystrix introgression lines with fourteen chromosomes, derived from the interspecific hybridization between a wild relative of cultivated cucumber C. hystrix (2n=2x=24, HH) and a Chinese cucumber 'Beijingjietou' (C. sativus L., 2n=2x=14, CC) were characterized using morphological, cytological, and SSR analysis. In morphology, those introgression lines were characterized to have small-sized leaf, short fruit, and multi-branching habit which were closer to the wild parent (C. hystrix), and to have a fertility as high as that of cultivated cucumber. Cytological observation showed that sister chromatids in at least one pair of somatic chromosomes were delayed obviously in separation at late metaphase. At diakinesis, 0.2 tetravalents, 0.05... |
| Tipo: Poster |
Palavras-chave: Cucumber; Cucurbits; Interspecific hybridization; SSR; Pseudoperonospora cubensis. |
| Ano: 2008 |
URL: http://hdl.handle.net/2174/230 |
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| Sari, N.; Tan, A.; Yanmaz, R.; Yetisir, H.; Balkaya, A.; Solmaz, I.; Aykas, L.. |
| Turkey is very rich in cucurbit genetic resources due to its diverse geographical and ecological situation. Turkey is one of the important diversity centers for cultivated cucurbits because of the adaptation to diverse ecological conditions as result of natural selection and also the farmers selection in accordance with their preference. National collection of Cucurbitaceae species at National Gene Bank of Turkey (AARI) consists of 2223 accessions. Collecting activities have been systematically conducted since early 1960s. 25.7 % of this amount is melon, 20.5 % is Cucurbita spp., 16.1 % is watermelon, 13.4 % is cucumber, 7.7 % is bottle gourd, 7.2 % is squash, 4.2 % is winter squash, 3.3 % is snake melon, 1.3 % is pumpkin, 0.3 % is other cucumbers, 0.2 %... |
| Tipo: Conference Paper |
Palavras-chave: Genetic resources; Melon; Watermelon; Squash; Cucumber; Minor cucurbits; Gene bank; Citrullus lanatus; Cucumis melo; Cucumis sativus; Cucurbita; Genetic diversity; Breeding; Wild species; Production. |
| Ano: 2008 |
URL: http://hdl.handle.net/2174/256 |
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| Baniel, A.; Saraf-Levy, T.; Perl-Treves, R.. |
| In this study we describe the inhibitory effect exerted by developing cucumber fruits on later-developing ovaries. Such pollinated ovaries do not set fruit but do not degenerate readily, remaining in a "stand-by" state that can be reversed when older fruits are removed. An increase in fruit set and decrease in inhibition was obtained by exogenous gibberellin and cytokinin treatment, and to a lesser extent by auxin. A decrease in transcript levels of genes expressed during fruit set was apparent in inhibited ovaries. |
| Tipo: Poster |
Palavras-chave: Cucumis sativus; Cucumber; Fruit set; Ovary; Gene expression. |
| Ano: 2008 |
URL: http://hdl.handle.net/2174/270 |
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| Barak, M.; Trebitsh, T.. |
| Cucumber (Cucumis sativus) is a monoecious plant that is extensively studied with respect to floral sex determination. While the genetic background, hormonal and environmental factors are well characterized, the molecular mechanisms regulating unisexual flower development are not well understood. Initially a cucumber floral bud is bisexual and has the potential to develop into a male or female flower. Using differential cDNA-AFLP analysis between plant apices of monoecious (predominantly male) and gynoecious (female) cucumber plants, we isolated a cDNA that encodes a putative GTP binding protein tyrosine phosphorylated protein A (CsTypA1). TypA genes are widely distributed in plants and prokaryotes. Bacterial TypA proteins are involved in protein... |
| Tipo: Poster |
Palavras-chave: Flower development; Floral sex; Ovary; Cucumis sativus; Cucumber; CDNA; Sex determination. |
| Ano: 2008 |
URL: http://hdl.handle.net/2174/282 |
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| Gonçalves,Jamile F.; Becker,Alexssandro G.; Pereira,Luciane B.; Rocha,João B. T. da; Cargnelutti,Denise; Tabaldi,Luciane A.; Battisti,Vanessa; Farias,Júlia G.; Fiorenza,Amanda M.; Flores,Érico M. M.; Nicoloso,Fernando T.; Schetinger,Maria R. C.. |
| In this study, the effects of lead (Pb) on growth, photosynthetic pigments concentration, lipid peroxidation, electrolyte leakage percentage (ELP), protein oxidation, aminolevulinate dehydratase (ALA-D; E.C. 4.2.1.24), ascorbate peroxidase (APX; E.C. 1.11.1.11), catalase (CAT; E.C. 1.11.1.6) and superoxide dismutase (SOD; E.C. 1.15.1.1) activities, and ascorbic acid (AsA), non-protein thiol groups (NPSH) and total soluble protein concentrations in cucumber seedlings (Cucumis sativus L.) were investigated. Seedlings were grown in vitro in an agar-solidified substrate containing three Pb levels as (C2H3O2)Pb.3H2O (0, 100, 400, and 1000 µmol L-1) for 10 d. Increasing Pb concentrations in substrate enhanced Pb concentration in both roots and shoot. Pb... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antioxidant enzymes; Cucumber; Lipid peroxidation; Pb; Photosynthetic pigments; Protein oxidation. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202009000300002 |
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| Sato, H.; Heang, D.; Sassa, H.; Koba, T.. |
| In Arabidopsis thaliana, FT and TFL1 are known to affect phase transition from vegetative phase to reproductive phase. It is also known that these genes also affect some growth habits such as flowering time and compactness. Especially, TFL1 and its functional orthologs, CEN in snapdragon and SP in tomato, were demonstrated to regulate growth habit of indeterminate type or determinate type. Cucumber cultivars also have two types of growth habit. Most of them were indeterminate types, however, taking into account of the characteristics such as yield, early harvest, and robustness, determinate type might be ideal for cultivating. In the present study, we identified one FT and five TFL1 homologs in cucumber and elucidated their genomic organization,... |
| Tipo: Poster |
Palavras-chave: Determinate type; Indeterminate type; Ortholog; Homolog; Arabidopsis thaliana; Cucumber. |
| Ano: 2008 |
URL: http://hdl.handle.net/2174/271 |
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| Shiber, A.; Gaur, R.K.; Rimon-Knopf, R.; Zelcer, A.; Trebitsh, T.. |
| Gynoecy in cucumber is controlled by the Female (F) locus that can be modified by other sex determining genes, environmental conditions and plant hormones. As in most of the Cucurbitaceae, the gaseous plant hormone ethylene induces female flower development and thus simulates the activity of the F locus. Monoecious (ff) cucumbers posses a single CsACS1 gene, while gynoecious plants posses an additional female-specific copy, denoted CsACS1G that was mapped to the cucumber Female (F) locus. To study the origin and function of the F locus we compared their genomic structure and investigated their expression pattern and the effect of reducing CsACS1/G transcript level in gynoecious plants. The CsACS1G and CsACS1 genes are identical twin genes except for the... |
| Tipo: Conference Paper |
Palavras-chave: Cucumis sativus; Cucumber; Sex-determination; Gynoecy; Ethylene; CsACS1/G; Female locus; Gene expression. |
| Ano: 2008 |
URL: http://hdl.handle.net/2174/217 |
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| Leibman, D.; Wolf, D.; Segev, O.; Raskin, A.; Gaur, R.; Saharan, V.; Zelcer, A.; Gal-On, A.. |
| Cucurbit production worldwide is affected by modern agricultural technologies that require massive investments of capital and knowledge. Viral diseases of cucurbit crops result in heavy yield losses, and may even jeopardize the production of these crops. The classical crop breeding for disease resistance in cucurbits is severely hampered by the lack of natural sources of durable resistance to some of the most destructive viruses. The generation of viral resistance by means of genetic engineering was reported and widely implemented for several crops, including cucurbits. Our laboratories have been involved in the evaluation of several genetic constructs for the generation of transgenic resistance to different groups of RNA viruses known to severely affect... |
| Tipo: Poster |
Palavras-chave: Cucumber; Cucumis sativus; Cucumber fruit mottle mosais virus; Cucumber vein yellowing virus; Cucurbit yellow stunting disorder virus; Zucchini yellow mosaic virus; Papaya ringspot virus; Transgenic plant. |
| Ano: 2008 |
URL: http://hdl.handle.net/2174/248 |
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| Registros recuperados: 19 | |
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