Endophytic fungi from Vitis vinifera L. isolated in Canary Islands and ...
Endophytic fungi from Vitis vinifera L. isolated in Canary Islands and ...
Endophytic fungi from Vitis vinifera L. isolated in Canary Islands and ...
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Influence of Hydric Deficit on Root Growth Dynamics <strong>in</strong> SomeGenotypes of Barley (Hordeum Vulgare)Velicevici Giancarla 1* , Sumalan R. 1 , Madosa E. 1 , Ciulca Elena Adriana 1 , Bitea Nicoleta 1 ,Malaescu Mihaela 11 University of Agricultural Sciences <strong>and</strong> Veter<strong>in</strong>ary Medic<strong>in</strong>e of Banat Timisoara, Faculty of Agriculture <strong>and</strong>Forestry, Calea Aradului 119, Romania;*Correspond<strong>in</strong>g author. Email: giancarlavely2000@yahoo.comAbstract Drought is one of the most important types of abiotic stress thataffects stability <strong>and</strong> amount of yield. This study was conducted to screen fordrought tolerance at early seedl<strong>in</strong>g stages for 19 Romanian <strong>and</strong> foreign w<strong>in</strong>terbarley cultivars. The objective of this study was to determ<strong>in</strong>e if there weredifferential responses to water deficit on root growth dynamics <strong>in</strong> some barleycultivars. Fluid deficit was <strong>in</strong>duced by polyethylene-glycol (PEG6000) solution,us<strong>in</strong>g control <strong>and</strong> 3 variants with different osmotic pressure (-2.72 Bars, -4.48Bars, -7.35 Bars). Determ<strong>in</strong>ations of root growth were efectuate after periodsof 5/10/15/ 20 <strong>and</strong> 25 days <strong>from</strong> the <strong>in</strong>duction of osmotic stress. It can beobserved that the varieties, seedl<strong>in</strong>gs age or treatment with PEG hadsignificantly positive <strong>in</strong>fluence on the roots growth <strong>in</strong> barley genotypesstudied. The age of seedl<strong>in</strong>gs presented the highest <strong>in</strong>fluence on thevariability of this character. The best results <strong>in</strong> terms of root growth wereobta<strong>in</strong>ed for the Regal <strong>and</strong> Andrei variety these be<strong>in</strong>g found to be less<strong>in</strong>fluenced by PEG's action, the varieties most affected were Adi, Plaisant,<strong>and</strong> DH261/22, DH260/18 DH 254/10 l<strong>in</strong>es.Key wordsbarley, drought tolerance,root growth, Polyethyleneglycol6000Researches concern<strong>in</strong>g pollen’s germ<strong>in</strong>ation of some grapev<strong>in</strong>e varieties <strong>in</strong> conditions of D.S. TimisoaraBlidariu C. 1* , Dobrei A. 11 Banat‟s University of Agricultural Sciences <strong>and</strong> Veter<strong>in</strong>ary Medic<strong>in</strong>e Timisoara, Faculty of Horticulture <strong>and</strong>Forestry*Correspond<strong>in</strong>g author. Email: ciprian_blidariu@yahoo.comAbstract Grape v<strong>in</strong>e‟s culture was of great importance not only forancient people form different areas, but also for our ancestors. Out ofresearches done it results that grape v<strong>in</strong>e was cultivated on the territory of ourcountry even s<strong>in</strong>ce 700-1000 years B.C.Accord<strong>in</strong>g to FAO 2010 data the area cultivated <strong>in</strong> Romania <strong>in</strong> 2009with grape v<strong>in</strong>es was of 183814 ha, be<strong>in</strong>g on the 11 th place <strong>in</strong> the world.In this article we made some observations upon Burgund, MuscatOttonel, Muscat Hamburg <strong>and</strong> Coarnă neagră grape varieties, which behavedifferently concern<strong>in</strong>g the flower<strong>in</strong>g process.The research made po<strong>in</strong>ted out a good flower<strong>in</strong>g process <strong>and</strong> poll<strong>in</strong>ation forBurgund <strong>and</strong> Muscat Ottonel <strong>and</strong> differentiated ones for Muscat Hamburg <strong>and</strong>Coarnă neagră varieties.Key wordsgrape v<strong>in</strong>e, germ<strong>in</strong>ation,gra<strong>in</strong>s, pollen, fertility