Contents

I. Review
Knott, DR: Wheat Production and Research in Canada, p.1

II. Research articles
Peng ZS, Liu DC, Yen C and Yang JL: Genetic control of supernumerary spikelet in common wheat line LYB, p.6
Liu DC, Yen C, Yang JL and Zheng YL: Chromosomal distribution of genes in diploid Lophopyrum elongatum (Host) A. Love that influences crossability of wheat with rye ., p.13
Peng ZS, Yen C and Yang JL: Genetic control of oligo-culms in common wheat, p.19
Segal G, Shimoni Y, Li H and Abbo S: Chromosome assignment and polymorphism of a wheat cDNA encoding protein disulfide isomerase, p.25
Kasai K, Solis R, Asakura N, Mori N and Nakamura C: Cytoplasmic diversity in Triticum and Aegilops evaluated by the respiratory electron flows in seedlings of alloplasmic hybrids of common wheat, p.31

III. Research information
Gao Z, Han F and Li J: Genomic constitution of a partial Triticum aestivum x Thinopyrum intermedium amphiploid, p.39
Qi ZJ, Liu SB, Wang HG and Li QQ: Crossability percentages of some improved wheat cultivars (lines) from China with rye ., p.41
Qi ZJ, Wang HG and Li QQ: Crossability percentages of bread wheat landraces from Shandong Province, China with rye, p.43
Ashraf MY and Bhatti AS: Effect of delayed sowing on some parameters of photosynthesis in wheat (Triticum aestivum L.), p.46

IV. Proposal
Morrison LA. Taxonomic issues in Triticum L. and Aegilops L ., p.49

V. Gene symbol
R.A. McIntosh, G.E. Hart, K.M. Devos, J. Rogers and M.D. Gale: Catalogue of gene symbols for wheat: 1998 Supplement, p.54

VI. Recent publications on wheat genetics , p.92

VII. Editorial remarks, p.101