Possibility of Target Gene Introgression from Transgenic Wheat into Non-transgenic Plants Through Pollens

doi:10.3321/j.issn:1000-7091.2002.03.001

Abstract

Abstract: The pollens of wheat could spread and set seeds in any direction at distances within 10m,and no seed set at distances out of 80 m when cast rated wheat was used as pollen recipient.The highest intraspecific rate of cross??pollination was only 0.24% within 1 m,and spontaneous hybrids between Aegilops cylindrica L or Aegilops ovata L.and T aestivum L could be obtained at the rate of 0.25% and 0 respectively if non cast rated wheat,A cylindrica L and A ovata L were used as pollen recipients.For grain production,the frequency of geneint rogression was much lower than that allowed by international standards even if the transgenic and non transg enic wheat were planted nearby.When releasing transgenic wheat,those species that hybridize easily with common wheat could be considered as risky targets in its origin centers or its major distribution areas.

Key words: Wheat(T aestivum L), Pollen, Introgression, Transgene, Ecological safety assessment

CLC Number:

S512

LU Aizhi, ZHAO He, WANG Tianyu, WANG Haibo. Possibility of Target Gene Introgression from Transgenic Wheat into Non-transgenic Plants Through Pollens[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2002, 17(3): 1-6. doi: 10.3321/j.issn:1000-7091.2002.03.001.

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