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Bulletin of Botanical Research ›› 2008, Vol. 28 ›› Issue (4): 392-395.doi: 10.7525/j.issn.1673-5102.2008.04.003

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Study on Meiosis Comparison of Pollen Grain of F1 Hybrided by Gametocidal Substitution Lines and Wheat

CHEN Xia;XING Lu-Lu;DING Hai-Yan;XU Ying-Bo;LI Ji-Lin*   

  1. (Department of Biology,Harbin Normal University,Harbin 150025)
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-07-20 Published:2008-07-20
  • Contact: jilinlee2004@yahoo.com.cn
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Abstract: The study uses the gametocidal chromosome 2S derived from Ae.speltoides, inducing chromosonie breaks in Triticum aestivum ningnong and 5R/5A wheat-rye substitution lines.Observation of the meiosis of the hybrid F1,in metaphaseⅠand Ⅱ,there are appearing the high-frequency of univalents and multivalents;in anaphaseⅠand Ⅱ,there are forming many chromosomal abnormalities such as a large number of lagging chromosomes,chromosomal fragments and chromosomal bridges;in dispores and tetraspores,there exist micronucleus.In this experiment, the meiosis behavior of GCl substitution lines hybrid with 5R/5A subtitution lines is more complex than of ningnong F1 hybrid. Through statistical analysis, the dual function on meiosis behavior,which is the hybrid between the gametocidal substitution lines and the 5R/5A substitution lines,is more markable than the sole gametocidal substitution lines function.Therefor,the use of the dual function on inducing chromosome translocation is an effective way.

Key words: gametocidal chromosome, substitution lines, meiosis

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