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II. NEWS

Interim Report of a Project under Japan - U. S. Scientific Cooperative Program

With the aid of a grant from the Japan Society for the Promotion of Science as part of the Japan-U. S. Cooperative Science Program a project entitled " Genetic study on phylogenetic differentiation of cultivated wheat in the Pacific Region " has been started on September 1, 1964. This project aims to elucidate phylogenetic relationship between Japanese and U. S. wheat populations through the comparative genetic study of wheat varieties in those two countries. The project is expected to be carried out for three years until the end of August, 1967.

I. Japanese Member

MATSUMURA, Seiji National Institute of Genetics, Misima
YAMASHITA, Kosuke Kyoto University, Kyoto
MOCHIZUIKI, Akira Hyogo Agricultural College, Sasayama
TANAKA, Masatake Kyoto University, Kyoto
SASAKI, Mutsuo Tottori University, Tottori
OKAMOTO, Masasuke Shiga Agricultural College, Kusatsu
NISHIKAWA, Kozo Gifu University, Gifu
MURAMATSU, Mikio Kihara Institute for Biological Research, Yokohama
TSUNEWAKI, Koichiro Kyoto University, Kyoto

II. Research Plan

1. Study from biochemical standpoint
(i) Nucleic acid level - Quantitative analysis of DNA content (NISHIKAWA)
(ii) Protein level - Analysis of species-specific proteins (MATSUMURA)

2. Study from the cytogenetic standpoint
(i) Nucleic differentiation
(a) Gene level - Distribution of genes controlling dwarfing, necrosis, chlorosis etc. (TANAKA, NISHIKAWA, MURAMATSU and TSUNEWAKI)
(b) Chromosome level - Differentiation of chromosome structure (SASAKI and OKAMMOTO)
(c) Genome level - Production of aneuploid series of Japanese varieties (MOCHIZUKI)
(ii) Cytoplasmic differentiation - Reciprocal nucleus-substitution between Japanese and American varieties (TSUNEWAKI)

3. study from the radiological standpoint - Variation of radioresistance and analysis of pertinent genetic and physiological factors (MATSUMURA)

4. Study from the morphological standpoint - Survey of morphological characters and analysis of genetic factors controlling them (YAMASHITA and TANAKA)

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