Wheat Information Service No.21 Wheat Information Service No.21


Contents

I. Research Notes:
M. FELDMAN:The mechanism regulating pairing in Triticum timopheevi, p.1
S. MATSUMURA:Differences in effects of gamma-rays and fast neutrons on wheat, p.3
1. gamma-rays and fast neutrons from Po-Be source on einkorn wheat
2. gamma-rays and fission neutrons in the polyploid wheat series
3. gamma-rays and 14 MeV neutrons on einkorn wheat
T. FUJII:Effects of 14 MeV neutrons in T. monococcum, p.7
T. MABUCHI:Effects of temperature on postirradiation storage in einkorn wheat, p.8
T. MABUCHI and S. MATSUMURA:Oxygen and storage effects on radiation damage in einkorn wheat seed, p.10
R. P. CHANDOLA:Effect of gamma-radiation on germination and survival in some bread wheat varieties, p.11
K. TSUNEWAKI:Awn inhibitor in Redman wheat, p.14
J. M. MCEWAN and K. J. VIZER:The frequency of twin seedlings in New Zealand wheats, p.16
M. P. SINGH:Monosomic analysis of adult plant resistance to black rust in the wheat variety Yaqui-53, p.19
S. SAKAMOTO:Intergeneric hybrids between two Eremopyrum and Agropyron species, p.22
J. SCHULZ-SCHAEFFER and P. W. ALLDERDICE:Determination of species relationships in the genus Agropyron by interspecific hybridization and genome analysis, p.23
W. J. LEE and B. R. MIN:Frequency and geographical distribution of rye with accessory chromosomes in Korea, p.27

II. News, p.29

III. Editorial Remarks, p.29