An Investigation of Homologous and Non-homologous Somatic Pairing by Interchromosomal Chromatin Connectives in Citrus ichangensis
Based on interchromosomal chromatin connectives by Giemsa staining technique, a statistical analysis of homologous and non-homologous chromosomal pairing was made on mitosis metaphase chromosomes of 7 accessions in Citrus ichangensis (2n=18 ). The results showed that incidence of interchromosomal pairing connectives at mitotic metaphase observed varied from 27.1％ to 40.2％ (mean 30.5％) with prominent two chromosomal connectives (78.9％)as well as three, four and five chromosomal connectives respectively. The great majority of connectives involve telosynapsis with 2-5 chromosomes, and some with telomeric and centromeric. It is suggested that similar DNA is involved in both homologous and non-homologous chromosomal pairing.
Somatic pairing Metaphase Chromatin connective Citrus ichangensis
G. L. Liang S. Q. Xiang W. X. Wang Q. G. Guo X. L. Li Q. He G. H. Han
College of Horticulture and Landscape Architecture, Southwest University, Chongqing, 400716, China
国际会议
11th International Citrus Congress(第11届国际柑橘大会)
武汉
英文
149-151
2008-10-01（万方平台首次上网日期，不代表论文的发表时间）