B. Report of the Committee on Gene Symbolization,
Nomenclature and Linkage Groups

 
Y. 
NAGATO and A. YOSHIMURA, CONVENERS
1) Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo,113-8657 Japan
2) Faculty of Agnculture, Kyushu University, Fukuoka, 812-8581 Japan

 
I. 
Registration of new gene symbols
The following genes are newly registered:.
GENE SYMBOL REGISTRATION No.139
Registrant: 
Kazutoshi Okuno and Shuichi Fukuoka (National Institute of 
Agrobiological Resources, Tsukuba, Japan)
Gene Symbol: 
pi21
Gene name: 
Pyricularia oryzae resistance-21
Character expression: 
Field resistance to rice blast in testing nursery under natural 
condition
Name of original line: 
Owarihatamochi (Japanese upland rice cultivar)
Gene locus: 
In the middle part of chromosome 4
Remark: 
One of QTLs controlling field resistance against rice blast of 
Japanese upland rice was mapped between RFLP markers G271 and G317 of chromosome 4.
Reference: 
Fukuoka, S. and K. Okuno (19977) RON 14:98-99. 
Fukuoka, S. and K. Okuno (19977) Breed. Sci. 49 (Suppi. 1).
GENE SYMBOL REGISTRATION No. 140
Registrant: 
Kiyoshi Fujii1, Yuriko Hayano-Saito2, Naoki Sugiura’, Nagao
Hayashi3, Norikuni Saka’, Takamichi Tooyama1,Toshihiko
Izawa’ and Akio Shumiya’
1) Aichi Prefectural Agriculture Research Center (AARC),
Nagakute Aichi 480-1193, Japan; 2) Hokkaido National Agricultural Experiment Station, Sapporo 062-8555, Japan;
3) Mountainous regional Agriculture Research Institute, AARC,
Inabu Aichi 441-2513, Japan)
Gene Symbol: 
Pbl
Gene name: 
Panicle blast resistance-i
Character expression: 
 

Resistance to panicle blast in testing fields under disease-conducive environments
 

Name of original line: Modan (Indica rice cultivar with rice stripe resistance)
Gene locus:In the middle part of long arm of chromosome 11
Remark:One of QTLs controlling field resistance against rice panicle
blast in rice stripe resistant rice cultivars was mapped closely to RFLP marker S723, CD0226 and C189 of chromosome 11. Pbl gene links to a rice stripe resistance gene Sivb-i with a recombination value of 5.2 - 1.5%. Pb) expresses its resistance especially to panicle blast.
Reference:Fujii, K., Y. Hayano-Saito, N. Sugiura, N. Hayashi, N. Saka, T, Tooyama, T. Izawa and A. Shumiya (1999) Breed. Res. 1:

203-210.
Fujii, K., Y. Hayano-Saito, N. Sugiura, N. Hayashi, M. Iwasaki
and T. Izawa (1999) Breed. Res. 1 (Suppl.1).
GENE SYMBOL REGISTRATION No. 141
Registrant: Chuangen Lu, Jiangshi Zou, K. Takabatake and Hiroshi Ikehashi (Jiangsu Academy of Agricultural Sciences, Nanjing,China; Faculty of Agriculture Kyoto University, Kyoto, Japan)
Gene Symbol: ga14
Gene Name: Gametophyte gene-14
Character expression:The transmission rate of gal4-i was estimated to be 0.13-
                                 0.22. The recombination value between gal4 and Pgil was estimated to be 0.29. The transmission rate of male gametes 
                                 possessing Pgil-2 was 0.29-0.38 in the heterozygote of Pgil1/Pgil-2.
Name of original lines:Kamairazu (gal4-j) and lR36 (gal4-i)
Gene locus:Chromosome 3
Remark:In the heterozygote gal4-i/gal4-j, gametes carrying gal4-j were aborted.
Reference: Chuangen Lu, Jiangshi Zou and H. Ikehashi. Breed. Sci. (submitted)
                  Chuangen Lu, K. Takabatake and H. Ikehashi. Euphytica (submitted)