Genetic diversity and molecular evolution of chinese waxy maize germplasm
Waxy maize (Zea mays L. var. certaina Kulesh), with many excellent characters in terms of starch composition and economic value, has grown in China for a long history and its production has increased dramatically in recent decades. However, the evolution and origin of waxy maize still remains unclear. We studied the genetic diversity of Chinese waxy maize including typical landraces and inbred lines by SSR analysis and the results showed a wide genetic diversity in the Chinese waxy maize germplasm. We analyzed the origin and evolution of waxy maize by sequencing 108 samples, and downloading 52 sequences from GenBank for the waxy locus in a number of accessions from genus Zea. A sharp reduction of nucleotide diversity and significant neutrality tests (Tajima?s D and Fu and Li?s F*) were observed at the waxy locus in Chinese waxy maize but not in nonglutinous maize. Phylogenetic analysis indicated that Chinese waxy maize originated from the cultivated flint maize and most of the modern waxy maize inbred lines showed a distinct independent origin and evolution process compared with the germplasm from Southwest China. The results indicated that an agronomic trait can be quickly improved to meet production demand by selection.
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2013
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Subjects: | AGRICULTURAL SCIENCES AND BIOTECHNOLOGY, GENETIC VARIATION, MAIZE, GERMPLASM, |
Online Access: | http://hdl.handle.net/10883/3264 |
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dig-cimmyt-10883-32642024-02-06T20:06:59Z Genetic diversity and molecular evolution of chinese waxy maize germplasm Hongjian Zheng Hui Wang Hua Yang Jinhong Wu Biao Shi Run Cai Yunbi Xu Aizhong Wu Lijun Luo AGRICULTURAL SCIENCES AND BIOTECHNOLOGY GENETIC VARIATION MAIZE GERMPLASM Waxy maize (Zea mays L. var. certaina Kulesh), with many excellent characters in terms of starch composition and economic value, has grown in China for a long history and its production has increased dramatically in recent decades. However, the evolution and origin of waxy maize still remains unclear. We studied the genetic diversity of Chinese waxy maize including typical landraces and inbred lines by SSR analysis and the results showed a wide genetic diversity in the Chinese waxy maize germplasm. We analyzed the origin and evolution of waxy maize by sequencing 108 samples, and downloading 52 sequences from GenBank for the waxy locus in a number of accessions from genus Zea. A sharp reduction of nucleotide diversity and significant neutrality tests (Tajima?s D and Fu and Li?s F*) were observed at the waxy locus in Chinese waxy maize but not in nonglutinous maize. Phylogenetic analysis indicated that Chinese waxy maize originated from the cultivated flint maize and most of the modern waxy maize inbred lines showed a distinct independent origin and evolution process compared with the germplasm from Southwest China. The results indicated that an agronomic trait can be quickly improved to meet production demand by selection. 2013-11-24T18:23:49Z 2013-11-24T18:23:49Z 2013 Article No http://hdl.handle.net/10883/3264 10.1371/journal.pone.0066606 English CIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact CIMMYT-Knowledge-Center@cgiar.org indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose. Open Access PDF SOUTHWEST CHINA Public Library of Science http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0066606 6 8 e66606 PLoS ONE |
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AGRICULTURAL SCIENCES AND BIOTECHNOLOGY GENETIC VARIATION MAIZE GERMPLASM AGRICULTURAL SCIENCES AND BIOTECHNOLOGY GENETIC VARIATION MAIZE GERMPLASM Hongjian Zheng Hui Wang Hua Yang Jinhong Wu Biao Shi Run Cai Yunbi Xu Aizhong Wu Lijun Luo Genetic diversity and molecular evolution of chinese waxy maize germplasm |
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Waxy maize (Zea mays L. var. certaina Kulesh), with many excellent characters in terms of starch composition and economic value, has grown in China for a long history and its production has increased dramatically in recent decades. However, the evolution and origin of waxy maize still remains unclear. We studied the genetic diversity of Chinese waxy maize including typical landraces and inbred lines by SSR analysis and the results showed a wide genetic diversity in the Chinese waxy maize germplasm. We analyzed the origin and evolution of waxy maize by sequencing 108 samples, and downloading 52 sequences from GenBank for the waxy locus in a number of accessions from genus Zea. A sharp reduction of nucleotide diversity and significant neutrality tests (Tajima?s D and Fu and Li?s F*) were observed at the waxy locus in Chinese waxy maize but not in nonglutinous maize. Phylogenetic analysis indicated that Chinese waxy maize originated from the cultivated flint maize and most of the modern waxy maize inbred lines showed a distinct independent origin and evolution process compared with the germplasm from Southwest China. The results indicated that an agronomic trait can be quickly improved to meet production demand by selection. |
format |
Article |
topic_facet |
AGRICULTURAL SCIENCES AND BIOTECHNOLOGY GENETIC VARIATION MAIZE GERMPLASM |
author |
Hongjian Zheng Hui Wang Hua Yang Jinhong Wu Biao Shi Run Cai Yunbi Xu Aizhong Wu Lijun Luo |
author_facet |
Hongjian Zheng Hui Wang Hua Yang Jinhong Wu Biao Shi Run Cai Yunbi Xu Aizhong Wu Lijun Luo |
author_sort |
Hongjian Zheng |
title |
Genetic diversity and molecular evolution of chinese waxy maize germplasm |
title_short |
Genetic diversity and molecular evolution of chinese waxy maize germplasm |
title_full |
Genetic diversity and molecular evolution of chinese waxy maize germplasm |
title_fullStr |
Genetic diversity and molecular evolution of chinese waxy maize germplasm |
title_full_unstemmed |
Genetic diversity and molecular evolution of chinese waxy maize germplasm |
title_sort |
genetic diversity and molecular evolution of chinese waxy maize germplasm |
publisher |
Public Library of Science |
publishDate |
2013 |
url |
http://hdl.handle.net/10883/3264 |
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