Carcinogenesis, Teratogenesis & Mutagenesis ›› 2006, Vol. 18 ›› Issue (1): 29-031.doi: 10.3969/j.issn.1004-616x.2006.01.009

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Influence of Lasting Magnetic Field on Oryza. sativa Chromosome

WU Shi-jun1;SONG Yun-chun2;SONG Fa-jun1;QIN Rui1,2   

  1. 1. Key Laboratory of State Ethnic Affairs Commission for Biological Technology, College of Chemistry and Life Sciences, South-Central University for Nationalities, Wuhan 430074, Hubei, China; 2. Key Laboratory of Ministry of Education for Plant Developmental Biology, College of Life Sciences, Wuhan University, Wuhan 430072, Hubei,China.
  • Received:2004-11-18 Revised:2005-02-15 Online:2006-01-30 Published:2006-01-30
  • Contact: QIN Rui

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Abstract: BACKGROUDA＆AIM: Previous research results showed that magnetic field treatment on rice can change its some hereditary characteristics such as germination,maturation of seed and fructification rate etc,but no reports on chromosomal structure at present.We chose model plant,Oryza.sativa as materials for studing the mechanism of magnetic field effect on genetic characteristics. MATERIAL AND METHODS: After 800,1 000,1 500,1 800 and 2 300 mT magnetic field treatments on Oryza.Sativa chromosom for 20 min,ASG method was adopted for chromosome staining,chromosome aberrations were examined with light microscope. RESULTS: Except 800 mT,some chromosomal aberrations were observed after 1 000,1 500,1 800 and 2 300 mT magnetic field treatment.These results showed that lasting magnetic field treatment could lead to chromosoal aberratinos such as no-centromere,centromere-loop and inverse B-loop on chromosome,and provide biochemical evidence for the effects of magnetic field on chromosome. CONLUSION: Chromosomal aberrations caused by lasting magnetic field changed the genetic characteristics of O.sativa.

Key words: magnetic field, Oryza.Sativa, aberration

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