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Genomic polymorphism in consecutive generation rice plants from seeds on board a spaceship and their relationship with space hze particles

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Frontiers in Biology 2007年第3期2卷 297-302页

作者： LUO Yi WANG Xujie MEI Mantong ZHUANG Chuxiong ZHOU Feng WEI Zengquan XIE Hongmei YAO Juan ZHAO Junliang College of Life Science South China Agricultural UniversityGuangzhou 510642China Institute of Modern Physics Chinese Academy of ScienceLanzhou 730000China

Dry rice seeds(Oryza sativa,subspecies indica)were sandwiched between nuclear track detectors,aboard the Chinese spaceship Shenzhou-3 for seven *** seeds were recovered and the genomic polymorphism in 201 plants developed from these seeds was studied using random amplified polymorphism DNA *** compared with plants from ground-based control seeds,the genomic polymorphic bands were amplified in 30.2%of the plants from the seeds exposed in *** results for sequencing and SNP analyses of the polymorphic bands verified the single nucleotide variations in these *** poly-morphisms in the consecutive generations of individual plants of the seeds from space were also *** seeds receiving hits of hze(high atomic number and high energy)particles from space were selected for further analyses and variable genomic polymorphisms were detected in all plants that developed from these *** them,the embryos of three seeds were hit at least once,and mutants with significant changes in agronomic traits were only found in later generations of these *** result implies that the hze particles of space are effective in inducing the changes of plant genome of inherited phenotypes.

关键词： Rice seeds Genomic polymorphism On board spaceship hze particles in space

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