J Integr Plant Biol. ›› 1999, Vol. 41 ›› Issue (3): -.

• Research Articles •    

Obtaining Homozygote of Taigu Genic Malesterile Wheat by Chromosome Elimination

SUN Jing-San, LU Tie-Gang and XIN Hua-Wei   

Abstract: The fertility of the Taigu genic male-sterile wheat is controlled by single dominative male-sterile gene Tal. So all the male-sterile plants are heterologous (Tal tal ), and homologous male-sterile plants ( Ta 1 Ta 1 ) do not exist in nature. In this work, based on the phenomenon of autonomous paternal chromosome elimination in wheat ( Triticum aestivum L. ) x maize ( Zea mays L. ) cross, the Taigu genic male-sterile wheat was used as maternal plant to cross with maize, and through the process of hormone treatment, embryo rescue and chromosome doubling, new germplasm of homologous dominative Taigu male-sterile wheat ( Ta 1 Ta 1 ), which never existed in nature, were successfully obtained. And this new precious germplasm was retained through long-term cryopreservation by vitrification.

Key words: Taigu genic male-sterile wheat, Homozygote, Chromosome elimination

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