期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：252
期号：2
页码：1-6
DOI：10.1088/1755-1315/252/2/022017
出版社：IOP Publishing
摘要：Red leaf beet was one of the most important leaf vegetables and an ornamental with rich pigment. However, there is a lack of information on genetic variability. In this study, cytological parameters on three varieties of red leaf beet were obtained. The results displayed that the average arm ratio of RR1 was determined 1.52 and relative length was ranged from 9.26% to 13.10%. The karyotype asymmetry index was 59.93%, and the karyotype formula was 2n=2x=18=14m+4sm (2SAT). The average arm ratio of RR2 was determined 1.50 and relative length was ranged from 8.57% to 13.11%. The karyotype asymmetry index was mensurated as 59.60%, and the karyotype formula was 2n=2x=18=14m (2SAT) +4sm. The average arm ratio of RR3 was determined 1.33 and relative length was ranged from 9.44% to 12.56%. The karyotype asymmetry index was 56.85%, which was much lower than RR1 and RR2, and the karyotype formula was 2n=2x=18=18m (2SAT). Although RR3 had an obvious difference with RR1 and RR2, the karyotype characteristics of three varieties of red leaf beet were all type 1A. This research revealed the karyotypic characteristics of red leaf beet. The results indicated that there was an obvious difference among the three varieties of red leaf beet in karyotypic characteristics, and the evolution of red leaf beet was relatively primitive.
