Wheat Information Service No.39 
Contents
I. Research Notes:
Y. CAUDERON and G. RYAN:Aegilops speltoides
promotion of homoeologous pairing in one Triticum aestivum x Agropyron
intermedium derivative, p.1
B. A. YOUNG and J. SCHULZ-SCHAEFFER:Meiotic studies
of 3 generations of backcrosses to the amphidiploid hybrid Triticum durum
DESF. x Agropyron intermedium (HOST) BEAUV, p.5
I. STANKOV and D. TSIKOV:A durum-sphaerococcum
derivative of pentaploid hybrids, p.9
T. SHIMADA, N. INOMATA, M. OKAMOTO and H. ASAMI:Telocentric
chromosomes obtained from calluses of nulli-5B tetra-5D of Chinese Spring wheat,
p.11
H. OGURA and K. TSUNEWAKI:Anther culture of the cytoplasm
substitution lines of Triticum aestivum cv. Chinese Spring, p.13
R. B. SINGH and J. S. SINDHU:Pollen production and
shedding in male fertility restorer lines of wheat, p.14
R. M. SINGH and D. KUMAR:Induced genetic variability
for certain physical characters of grains following gamma-irradiation at two different
seed moisture contents in wheat, Triticum aestivum, var. K-68, p.16
II. Genetic Stock:
K. TSUNEWAKI and Y. NAKAI:Necrosis genes in common
wheat varieties from the USSR and the East Mediterranean Region, p.19
III. R. A. MCINTOSH:Gene Symbols for Wheat, p.31
IV. Editorial Remarks:
Announcement for future issues, p.33
Raise of Membership Fee, p.33
Acknowledgement, p.33
Coordinating Committee, ...iii
Explanation of the Figure on the Cover, ...iii