A Preliminary Study on Karyotype of Kerria ruralis Wang
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1.
Research Institute of Resource Insect, CAF, Kunming 650224, Yunnan, China
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Abstract
Multicolor phenomenon is a special rule in heredity of Kerria ruralis. Karotype of female in two styles is preliminarily reported in this paper. 18 chromosomes are composed of 8 metacentric chromosomes and 10 terminal chromosomes. The two styles share the same karotype formula and type of chromosomes while differences in the shapes of chromosomes exist. Using the t-test to analyze the six karyotypic parameters (arm ratio, centromere index, relative length index,etc.) between the two color styles, the result showed that the differences were not distinct. The karotype formula is: Ky(2n,(?)) = 18 = 8m + 10T = 4L + 4M2 + 4M1 + 6S.
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Proportional views
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