Chromosome number and genome size variation in Colocasia (Araceae) from China
Wang, Guang-Yan1,2,4; Zhang, Xiao-Ming1,2,3; Qian, Min1,2; Hu, Xiang-Yang1,2; Yang, Yong-Ping1,2
2017-11-01
发表期刊JOURNAL OF PLANT RESEARCH
ISSN0918-9440
卷号130期号:6页码:989-997
摘要Chromosome number and genome size are important cytological characters that significantly influence various organismal traits. We investigated chromosome number and genome size variation in 73 accessions belonging to four Colocasia species from China. Five different chromosome counts (2n = 26, 28, 38, 42, and 56) were found, the largest one representing a new record in Colocasia. The basic chromosome numbers are x = 13, 14, and 19, corresponding to 2x, 3x, and 4x cytotypes. Yunnan Province, China is considered the center of Colocasia polyploid origin. The 2C values in our accessions ranged from 3.29 pg in C. gigantea to 12.51 pg in C. esculenta. All species exhibit inter- and intraspecific chromosomal variation. Differences in DNA content among the Colocasia species seem to have occurred by chromosomal gain under similar habitats. Polyploidization also obviously contributes to 2C value variation.
关键词Chromosome Number Colocasia Genome Size Polyploidy
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/151853/60299
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, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, Kunming 650201, Yunnan, Peoples R China
2.Chinese Acad Sci, Kunming Inst Bot, Germplasm Bank Wild Species, Kunming 650201, Yunnan, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Anqing Normal Univ, Prov Key Lab Biodivers Study & Ecol Conservat Sou, Sch Life Sci, Anqing 246133, Anhui, Peoples R China
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Wang, Guang-Yan,Zhang, Xiao-Ming,Qian, Min,et al. Chromosome number and genome size variation in Colocasia (Araceae) from China[J]. JOURNAL OF PLANT RESEARCH,2017,130(6):989-997.
APA Wang, Guang-Yan,Zhang, Xiao-Ming,Qian, Min,Hu, Xiang-Yang,&Yang, Yong-Ping.(2017).Chromosome number and genome size variation in Colocasia (Araceae) from China.JOURNAL OF PLANT RESEARCH,130(6),989-997.
MLA Wang, Guang-Yan,et al."Chromosome number and genome size variation in Colocasia (Araceae) from China".JOURNAL OF PLANT RESEARCH 130.6(2017):989-997.
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