Scientia Agricultura Sinica ›› 2007, Vol. 40 ›› Issue (5): 889-894 .

• CROP GENETICS & BREEDING·GERMPLASM RESOURCES • Previous Articles     Next Articles

Discovery, Identification and Genetic Analysis of a new Thermo-Sensitive Genic Male Sterile Line in Maize

  

  1. 河南农业大学农学院
  • Received:2006-04-07 Revised:2006-08-21 Online:2007-05-10 Published:2007-05-10

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Abstract: The discovery and identification of new thermo-sensitive male genic sterile line is important to the seed production with “two line” system in maize. A new thermo-sensitive male genic sterile line Qiong-68ms was discovered, and its ecological mechanism, cytological characters as well as genetics were analyzed in this report. The results showed that the TGMS line Qiong68ms expressed complete sterility when the daily maximum temperature was more than 33℃ during spikelet phase of head differentiation, and exhibited fertility when the daily maximum temperature was lower than 30℃ during that phase. Its sterility was governed by a recessive genic gene.

Key words: maize, Thermo-sensitive genic male sterile line, Fertility identification, Genetic analysis

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