Mirela Irina CORDEA - University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca (original) (raw)

Papers by Mirela Irina CORDEA

Salt and Water Stress Responses in Plants

Plant Stress Physiology - Perspectives in Agriculture [Working Title]

Climate change-driven ecological disturbances have a great impact on freshwater availability whic... more Climate change-driven ecological disturbances have a great impact on freshwater availability which hampers agricultural production. Currently, drought and salinity are the two major abiotic stress factors responsible for the reduction of crop yields worldwide. Increasing soil salt concentration decreases plant water uptake leading to an apparent water limitation and later to the accumulation of toxic ions in various plant organs which negatively affect plant growth. Plants are autotrophic organisms that function with simple inorganic molecules, but the underlying pathways of defense mechanisms are much more complex and harder to unravel. However, the most promising strategy to achieve sustainable agriculture and to meet the future global food demand, is the enhancement of crop stress tolerance through traditional breeding techniques and genetic engineering. Therefore, it is very important to better understand the tolerance mechanisms of the plants, including signaling pathways, bioc...

Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Horticulture, 2019

Carbohydrate reserves in grapevine are stored in form of starch and soluble sugars. The present s... more Carbohydrate reserves in grapevine are stored in form of starch and soluble sugars. The present study was conducted in order to understand the dynamics of insoluble carbohydrate reserves during dormancy season of some table and wines grapevine varieties. Six year old grapevine varieties (Muscat de Hamburg, Napoca, Cardinal, Perla de Csaba, Fetească regală, Muscat Ottonel, Pinot noir and Fetească neagră) were sampled before winter. During dormancy, starch level in canes was appreciated by iodin in potassium iodide method, wood and pith diameter measured and bud viability tested. The levels of starch in grape canes at the beginning of dormancy (November) was highest in Muscat de Hamburg (3.89), Napoca and Fetească regală (3.76) and the lowest in Cardinal (3.47). Due to climatic conditions over dormancy, starch began to resynthesize already during January and February, with significantly high levels for all varieties. Wood/pith ratio was highly correlated with starch level. Bud viabili...

Viability and germination capacity of pollen grains is very important in breeding programs which ... more Viability and germination capacity of pollen grains is very important in breeding programs which require a minimum 30% germination level for the success of artificial hybridization. This paper presents the pollen viability and germination capacity analyses performed in nine tulip cultivars that belong to six different groups and the correlation between these two determinations. The viability of the pollen grains registered higher values in eight, out of nine cultivars (ʻYokohamaʼ 81.7%, ʻVeronique Sansonʼ 93.9%, ʻTender Whisperʼ 90.7%, ʻPaul Schererʼ 86.0%, ʻDavenportʼ 84.8%, ʻFancy Frillsʼ 92.9%, ʻBlue Parrotʼ 96.1%, ʻRed Riding Hoodʼ 89.8%), while in the case of germination capacity only four cultivars (ʻRed Riding Hoodʼ 35.9%, ʻBlue Parrotʼ 81.1%, ʻDavenportʼ 78.3% and ʻSalmon Impressionʼ 27.7%) registered the necessary rate for the breeding programs. The lower germination percentage of pollen grains, in some cultivars, may be due to the duration of storage period of the pollen.

The aim of the research was to evaluate the effects of projects developed by Local Action Groups ... more The aim of the research was to evaluate the effects of projects developed by Local Action Groups (LAGs) on the economic development of rural areas in two development regions of Romania: North-West and North-East. Using Propensity Score Matching (PSM) we have compared communes belonging and not belonging to a LAG having similar characteristics, observing their differences in terms of outcome variables (turnover, number and employees in non-agricultural firms). Results show that there is not a statistically significant difference in change (2011-2015) of outcome variables between the two groups, both in the whole sample and in each region. This points to a lack of effectiveness of LAGs projects in promoting non-agricultural rural development. Furthermore, according to regression results, the outcome indicators are significantly affected by the degree of socio-economic development at the beginning of the examined period.

International Journal of Innovative Approaches in Agricultural Research, Mar 29, 2019

Pen Academic is an independent international publisher committed to publishing academic books, jo... more Pen Academic is an independent international publisher committed to publishing academic books, journals, encyclopedias, handbooks of research of the highest quality in the fields of Education, Social Sciences, Science and Agriculture. Pen Academic created an open access system to spread the scientific knowledge freely.

Gomez-Campo et al., 1999) this tribe, at least phylogenetically speaking, is divided into two lin... more Gomez-Campo et al., 1999) this tribe, at least phylogenetically speaking, is divided into two lines/clans: the line "rapa/oleracea" and the line "nigra", shown in table 2. Members of numerous genra including , are represented in both lines. This may explain the possibility of crossing between different species of this tribe. More than this, some authors

Influence of Lead and Cadmium on Some Physiologic Indices of Allium Cepa

Influence of Technology and Environment on the Pollen Germination Capacity in Cherry

Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Horticulture

Pollen of four cherry cultivars (‘Lapins, ‘Kordia’, ‘Sylvia’, ‘Regina’) was collected and examine... more Pollen of four cherry cultivars (‘Lapins, ‘Kordia’, ‘Sylvia’, ‘Regina’) was collected and examined with microscop to determine its germination capacity. It was observed that pollen fertility varied from 18.7 % to 80.1 %. Environmental conditions of the studied area as well as applied treatments affected pollen germination capacity. Due to the high maximum temperature recorded in 13.03.2018, bud formation was induced 18 day earlier than in the previous years, growth started on March 31st, when the temperature was 21.5˚C. Regarding production, the highest yield was obtained in ‘Regina’ variety 9.7 kg/tree, ‘Kordia’ 9.3 kg/tree, ‘Lapins’ 8.8 kg/tree and Sylvia 8.2 kg/tree. In autumn of the previous year, the trees were fertilized with urea, in a concentration of 3 kg per ha, and in the spring with CROPAID, in a concentration of 5 liters per ha. The results show that germination percentage was much higher in the pollen collected from the treated trees than in the untreated ones.

A New Source of Genetic Resistance to Potato Blight (Phytophthora infestans)

Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj Napoca Horticulture, Nov 21, 2013

Genetic Diversity of several Inbreed Sweet Corn Lines for the Main Characters of the Ear

Nitrate and Nitrite Contents of Sweet Corn Kernels as Influenced by Genotype and Levels of Nitrogen Fertilization

Maturity of F1 grape hybrids originated in Pink Traminer

Nitrate and Nitrite Contents of Sweet Corn Kernels as Influenced by Genotype and Levels of Nitrogen Fertilization

Earliness and Blooming Time in the Tulip Collection of “Al. Borza” Botanical Garden, Cluj-Napoca, Romania

Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Horticulture, 2015

A New Source of Genetic Resistance to Potato Blight (Phytophthora infestans)

Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj Napoca Horticulture, Nov 21, 2013

Virology, Nov 10, 2006

Viral determinants for overcoming Pisum sativum recessive resistance, sbm-2, against the potyviru... more Viral determinants for overcoming Pisum sativum recessive resistance, sbm-2, against the potyvirus Pea seed-borne mosaic virus (PSbMV) were identified in the region encoding the N-terminal part of the P3 protein. Codons conserved between sbm-2 virulent isolates in this region: Q21, K30 and H122 were found to specifically impair sbm-2 virulence when mutated in selected genetic backgrounds. The corresponding amino acids, Gln21 and Lys30, are neighbored by P3 residues strongly conserved among potyviruses and His122 is conserved particularly in potyviral species infecting legumes. The strongest selective inhibition of sbm-2 virulence, however, was observed by elimination of isolate specific length polymorphisms also located in the N-terminal part of the P3 protein. Length variation in N-terminal P3 is common between potyviral species. However, intra-species length polymorphism in this region was found only among PSbMV isolates. Our findings comply with a model for PSbMV pathotypes having evolved by a diversification of the P3 protein likely to extend to the level of function.

Use of genomic fingerprinting techniques for revealing DNA polymorphism in Ginkgo biloba L., a medicinal woody species

G x E Interaction on Yield Stability of Five Sweet Corn Hybrids Grown under Different Agricultural Systems Marin ARDELEAN, Mirela CORDEA, Voichiţa HAŞ, Agnes BORS

Notulae Botanicae Horti Agrobotanici Cluj Napoca, 2012

ABSTRACT

Chemical Control of Scab ( Venturia inaequalis ) in the Seini Fruit Basin

Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj Napoca Agriculture, Nov 26, 2013