Variations in Genome Size of Turnip Landraces from Two High-altitude Environments
Basak, Supriyo; Wang, Guangyan; Sun, Xudong; Yang, Yongping1
2018-03-01
发表期刊JOURNAL OF THE AMERICAN SOCIETY FOR HORTICULTURAL SCIENCE
ISSN0003-1062
卷号143期号:2页码:136-143
摘要Brassica rapa var. rapa (turnip) is considered a main source of food for the inhabitants of the Qinghai-Tibetan Plateau (QTP) and its adjacent highlands when other crops are scarce. The QTP ranges from lat. 25.59 degrees N to 39.49 degrees N and from long. 73.29 degrees E to 104.40 degrees E, whereas the Yunnan Plateau ranges from lat. 20.00 degrees N to 29.16 degrees N and from long. 96.00 degrees E to 110.19 degrees E. A comparison between the turnip landraces of two different plateau environments can provide a mechanistic insight into plant adaptation in highlands. The aim of this investigation was to understand the patterns in variation in genome size (GS) between the turnip landraces of two plateau environments. We used a well-established protocol to count chromosome number and performed propidium iodide flow cytometry to measure GS. No polyploidy was detected among the turnip landraces tested, and 15.5% variation in GS was observed between the landraces. No consistent pattern pertaining to GS variation emerged after the environmental variables were considered. Thus, we propose that such pattern may reflect the indirect effect of selection, random process, genetic drift, or some other factors on GS through interaction of life-form and phenotypic traits.
关键词Chromosome Number Climatic Variables Flow Cytometry Intraspecies Variation Qinghai-tibetan Plateau
语种英语
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文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/61244
专题中国科学院东亚植物多样性与生物地理学重点实验室
作者单位1.Chinese Acad Sci, Key Lab Plant Divers & Biogeog East Asia, Kunming Inst Bot, 132 Lanhei Rd, Kunming 650201, Yunnan, Peoples R China
2.Chinese Acad Sci, Germplasm Bank Wild Species, Kunming Inst Bot, 132 Lanhei Rd, Kunming 650201, Yunnan, Peoples R China
3.Chinese Acad Sci, Inst Tibetan Plateau Res Kunming, Kunming Inst Bot, 132 Lanhei Rd, Kunming 650201, Yunnan, Peoples R China
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Basak, Supriyo,Wang, Guangyan,Sun, Xudong,et al. Variations in Genome Size of Turnip Landraces from Two High-altitude Environments[J]. JOURNAL OF THE AMERICAN SOCIETY FOR HORTICULTURAL SCIENCE,2018,143(2):136-143.
APA Basak, Supriyo,Wang, Guangyan,Sun, Xudong,&Yang, Yongping.(2018).Variations in Genome Size of Turnip Landraces from Two High-altitude Environments.JOURNAL OF THE AMERICAN SOCIETY FOR HORTICULTURAL SCIENCE,143(2),136-143.
MLA Basak, Supriyo,et al."Variations in Genome Size of Turnip Landraces from Two High-altitude Environments".JOURNAL OF THE AMERICAN SOCIETY FOR HORTICULTURAL SCIENCE 143.2(2018):136-143.
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