Wheat Information Service No.14 Wheat Information Service No.14



Contents

I. Research Notes:
H. KIHARA and K. TSUNEWAKI:Polyploids and aneuploids of Triticum dicoccum var. Khapli produced by N2O-treatment, p.1
G. KIMBER:The effect of chromosome 5B at prophase, p.3
Y. WATANABE:Meiotic irregularities in intervarietal hybrids of common wheat, p.5
V. E. PISAREV and M. D. ZHILKINA:Directed change in seed dormancy period of Moskovka Spring Wheat, p.7
J. MAC KEY:Chemical induction of mutation in common wheat, p.9
R. E. ALLAN, O. A. VOGEL, and J. R. BURLEIGH:The effect of temperature on coleoptile elongation of three groups of wheat varieties, p.12
H. A. MOHAMED:Effect of X-ray on some wheat characters, p.14
I. UCHIKAWA:Newly induced mutants of Triticum vulgare by X-ray-treatments, p.16
T. FUJII:Segregation ratio and viability of several chlorophyll mutants in T. monococcum, p.18
Y. YAMAMOTO and M. SASAKI:Chromosome pairing in F1 hybrid plants between synthesized 6x-wheat and rye, p.19
R. C. MCGINNIS and J. H. MELNYK:Analysis of chromosome pairing in interspecific F1 hybrids involving Aegilops Juvenalis, p.22
J. H. MELNYK and R. C. MCGINNIS:Analysis of chromosome pairing in interspecific and intergeneric F1 hybrids involving hexaploid Aegilops crassa, p.24
M. KAMANOI:Correlation between the frequency of trisomics and seed weight in rye trisomics, p.26
M. SASAKI:Chromosome pairing in the F1 hybrid plants between Triticale No.17 (8x) and Agropyron glaucum (6x), p.28
J. A. WILSON2 and W. M. ROSS:Male sterility interaction of the Triticum aestivum nucleus and Triticum timopheevi cytoplasm, p.29
F. -T. KAO, E. R. AUSEMUS, H. STEVENS and R. S. CALDECOTT:An X-ray induced awned mutant in Thatcher wheat, p.30

II. Editorial Remarks:
2nd International Wheat Genetics Symposium. Announcement for further issues. Acknowledgement, p.32

III.
THE 2ND INTERNATIONAL WHEAT GENETICS SYMPOSIUM p.33