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Wheat Information Service No.27

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Contents

I. Research Notes:
R. S. RANA and M. S. SWAMINATHAN:Triticum zhukovskyi as a source of male sterile cytoplasm and fertility restorer genes, p.1
R. K. MIRI:Male fertility and sterility in the hybrids of crosses of T. zhukovskyi, T. sphaerococcum and T. aestivum with common wheat carrying T. timopheevi cytoplasm, p.2
G. A. CHAVDAROV and K. P. DJELEPOV:Inducing mutations type sphaerococcum in Triticum aestivum ssp. vulgare with the aid of x-rays and ethyl methan sulphonate, p.5
T. TSUCHIYA:Chromosome variations in some strains of hexaploid Triticale, p.7
T. TSUCHIYA:Breeding behaviour of aneuploids in some hexaploid Triticale, p.9
G. ROBBELEN and S. SMUTKUPT:Reciprocal intergeneric hybridizations between wheat and rye, p.10
P. K. GUPTA:Homology of a rye (Secale cereale var. DAKOLD) chromosome, p.13
M. D. UPADHYA:A new interpretation of the mechanism regulating chromosome pairing in Triticum, p.15
H. K. JAIN, M. P. SINGH and R. S. UTKHEDE:Genome differentiation, nucleolar organizers and RNA synthesis in wheat, p.17
M. S. SWAMINATHAN, V. L. CHOPRA, B. C. JOSHI and D. SINGH:Development of a monosomic series in an Indian wheat and isolation of nullisomic lines, p.19
J. SCHULZ-SCHAEFFER and N. DINCER:A possibility of increasing Turkey's total wheat production by introduction of wheats with high yielding potential, p.21

II. Genetic Symbols and Nomenclature
A report of the Nomenclature Commission, p.26

III. Editorial Remarks:
Announcement for further issues, p.28
Acknowledgement, p.28
Committee, ...iii
Explanation of the figure on the Cover, ...iii