THE EFFECT OF MAGNETIC FIELD POLARITY AND INDUCTION INTENSITY ON MICROPROPAGATION AND ANATOMIC CHARACTERS OF PEACH ROOTSTOCK LOCAL BAYDAWI .

Abstract

This study was conducted at the laboratory of Plant Tissue and Cell Culture, Department of Horticulture and Landscape Design, College of Agriculture and Forestry , Mosul University. The objective of this study was to show the effects of north and south pole of magnetic field and electromagnetic field, in order to propagate peach rootstock Prunus persicaL.Batsch Cv. Local Baydawi by using tissue culture techniques.The data can be summarized as follow: Effect of north or south pole of magnetic field (200 mT) or electromagnetic field at (0.16 mT) were studied on the node culture in MS medium supplemented with 2 mg/l BA, after 8 weeks electromagnet field produced shoot number remarkably ،Northen electrom-agnetic field caused an increase in shoot length about 12٪ as compared with control. The second experiment conducted by using south pole of magnets (0 , 1 ، 2 ، 3) for three period (20 ، 40 ، 56) days for node, the results showed that high magnetic field reduced the number of shoot ( 3.2) when comparing to control treatment (5.2 shoots) , 1 magnetic for 20 days gave th best shoots length ( 14 m). Stem sections revealed that three magnets improve vascular bundle development and xylem formation and showed brown precip-itations in pith tissue.