Contents

I. Research article
Sayar MT, Birsin MA, Ulukan H and Ozgen M: Effect of seed size on the tissue culture response of callus from mature embryos of wheat species ., p.1
Peng ZS, Su M and Cheng KC: Characterization of dwarf trait in the tetraptoid wheat landrace, Aiganfanmai ., p.7
Mujeeb-Kazi A, Cortes A, Rosas V, William MDHM and Delgado R: Development of near-isogenic sets of derivatives with T1BL.1RS or 1B chromosome substitutions in bread wheat ., p.13
Subramaniam K, Liu B, Ye ZH, Abbo S, Ueng PP: Isolation of a gene coding for a putative sterol C-24 methyltransferase in wheat ., p.17
Kumar J, Singh RP, Nagarajan S and Sharma AK: Further evidences on the usefulness of Lr34 / Yr18 gene in developing adult plant rust resistant wheat genotypes ., p.23

II. Research information
Ozgen M, Onde S, Birsin M and Sancak C: Transient expression of beta-glucuronidase (GUS) gene in mature embryos of winter durum wheat via microprojectile bombardment ., p.30

III. Genetic stocks
Watanabe N and Kawahara T: Aegilops species collected in California and Oregon, USA., p.33

IV. Gene symbol
McIntosh RA, Hart GE, Devos KM and Rogers WJ: Catalogue of gene symbols for wheat: 1999 Supplement, p.37

V. Recent publications on wheat genetics, p.86

VI. Editorial Remarks, p.100