Genetic erosion from modern varieties into traditional upland rice cultivars (Oryza sativa L.) in northern Thailand

文献类型： 外文期刊

第一作者： Ishikawa, R

作者： Ishikawa, R;Yamanaka, S;Fukuta, Y;Chitrakon, S;Bounphanousay, C;Kanyavong, K;Tang, LH;Nakamura, I;Sato, T;Sato, YI

作者机构：

关键词： genetic erosion;isozyme;northern Thailand;plastid type;upland rice (Oryza sativa L.)

期刊名称：GENETIC RESOURCES AND CROP EVOLUTION （ 影响因子：1.524； 五年影响因子：1.713 ）

ISSN： 0925-9864

年卷期： 2006 年 53 卷 2 期

页码：

收录情况： SCI

摘要： The purpose of this study was to assess the extent of genetic erosion of traditional upland germplasm in northern Thailand as a result of gene-flow from distinct strains carrying different genotypes. Even modern variety specific markers have not been developed, there is a comparative population in Laos. Thus, both populations were compared with various characters to evaluate gene-flow from modern variety to landraces. Glutinous and glabrous strains are predominated in Laos. However, such strains were drastically decreased in north-east Thailand. Gene diversity is higher in Thailand, compared to Laos at seven isozyme loci. This was a result of the higher frequencies of Indica strains and heterozygotes in Thailand. Plastid type was also determined by using an INDEL marker. Nearly half of Indica strains carried the Japonica plastid. Heterozygotes also tended to carry Japonica cytoplasm. Such nuclear-cytoplasm substituted strains and heterozygotes were probably generated by natural hybridization. Japonica strains tended to be a maternal donor rather than Indica ones. Or Indica strains would easily release pollens, which grow outside of upland fields.

分类号：

  • 相关文献

[1]The conservation of Chinese rice biodiversity: genetic erosion, ethnobotany and prospects. Gao, LZ. 2003

[2]Developing an Agricultural Biodiversity Policy for China. Vernooy, Ronnie,Song, Yiching,Li, Jingsong,Zhang, Zongwen,Liu, Lijun,Martins, Christine,Qin, Tianbao,Wang, Fuyou,Xue, Dayuan,Xue, Dayuan,Yang, Yayun,Yang, Yayun,Zhang, Shihuang,Zhang, Xiaoyong.

[3]Characterization of genomes and chromosomes in partial amphiploids of the hybrid Triticum aestivum x Thinopyrum ponticum by in situ hybridization, isozyme analysis, and RAPD. Zhang, XY,Dong, YS,Wang, RRC. 1996

[4]Development and identification of wheat-Ag. pulcherrimum addition line and substitution line with BYDV resistance. Wu, DL,Xin, ZY,Chen, X,Xu, HJ,Ma, YZ,Zhang, ZY. 1999

[5]A simple, economical and specific staining method for isozymes in PAGE.. Yang, K,Shang, ZL. 1996

[6]Genetic resources of primitive upland rice in Laos. Ishikawa, R,Yamanaka, S,Kanyavong, K,Fukuta, Y,Sato, YI,Tang, L,Sato, T. 2002

[7]Effects of water-borne copper on isozymes of gill in Eriocheir sinensis. Zhao, Yun-long,Yang, Zhi-biao,Hua, Xiu-guo,Li, Na,Fan, Yu-jie,Yang, Zhi-biao,Zhang, Wen,Zhu, Jian-guo,Cui, Li,Yang, Jian. 2010

作者其他论文 更多>>

微信小程序