GrainGenes
A Database for Triticeae and Avena
Shahla and Tsuchiya, pp. 52-53
II. 28. Telotrisomic analysis in Triplo 7S in barley.(1)
A. Shahla and T. Tsuchiya, Department of Agronomy, Colorado State University, Fort Collins, Colorado 80523, U.S.A.
(1) Supported by USDA/SEA Competitive Research Grant 82-CRCR-1-1020 and CSU Hatch Project.
Three marker genes nld (narrow leafed dwarf), f6 (chlorina) and r smooth awn) were used in telotrisomic analysis with Triplo 7S. Crosses were made between telotrisomic 7S and marker stocks. The segregation ratios were observed in the F2 generation (Table 1).
Table 1. F2 data for telotrisomic analysis of three marker genes with Triplo 7S.
All these genes showed disomic ratio in F2 generation suggesting their association with the long arm of chromosome 7 (7L). In linkage map (Tsuchiya, 1972; Takahashi and Fukuyama, 1978) the gene nld was located at the distal segment of chromosome 7 based on the data presented by Takahashi et al. (1971). However, the result of this study suggested that this gene is not located on the short arm.
References:
Takahashi, R. and T. Fukuyama. 1978. Plant Genetics 4, Morphogenesis (H. YamagucM ed.):391-461 (Jap.).
Takahashi, R., J. Hayashi and I. Moriya. 1971. BGN 1:51-58.
Tsuchiya, T. 1972. BGN 2:163-167.