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Bulletin of Botanical Research ›› 2007, Vol. 27 ›› Issue (1): 89-93.doi: 10.7525/j.issn.1673-5102.2007.01.017

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Cytogenetic Studies on the Cross-progenies Between Chinese Spring-Agilops 2C Disomic Addition and Chinese Spring-Elytriga Disomic Addition

LIU Feng-Qi;QU Min;ZHANG Yan-Ming;ZHANG Xue-Ting;LI Ji-Lin*   

  1. (Department of Biology,Harbin Normal University,Harbin 150025)
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-01-20 Published:2007-01-20
  • Contact: LI Ji-Lin
  • Supported by:

Abstract: The cytogenetics of the cross-progenies between Chinese Spring-Agilops 2C disomic addition and Chinese Spring-Elytriga disomic addition were studied. The results showed that The highest seed-setting of crossing generation is 36.06%, the lowest is 19.43% and average is 29.5%. The highest seed-setting of F1-selfed is 62.09%, the lowest is 30.92% and average is 39.64%. the control experiment and analysis of variance showed that the gametocidal chromosome effected on the difference of seed-set rate of hybridization in different lines. After scrutinizing the meiosis of pollen mother cells (PMS) in F1 hybrids, the results were concluded: the number of univalents exceeded the expected and some trivalents and tetravalents appeared at the same time. These were mainly caused by the gametocidal chromosome 2C.

Key words: gametocidal chromosome, addition lines, rate of seed set, meiosis

CLC Number: