12 Rice Genetics Newsletter 13 ( 1996)

N. Iwata. Convener

New members of the Committee have been elected in the Third Rice Genetics Symposium, as follows: N. Iwata (convener, Japan), I. Takamure (Japan), H. K. Wu (Taiwan), E. A. Siddiq (India), and J. N. Rutger (USA). On newly appointed committee members, we wish to thank outgoing members: T. Kinoshita, K. Takeda, H. K. Wu, R. Seetharaman, and J. N. Rutger. Especially we wish to express our sincere gratitude to Dr. T. Kinoshita, former convener of this committee and present chairman of the Coordinating Committee of the Rice Genetics Cooperative, for his intensive activity and contribution in this committee in the last twelve years.

In Volume 12, Dr. Kinoshita compiled the information on gene symbolization, nomenclature and linkage groups from many aspects. Registration of new gene symbols, therefore, is reported in this volume. In addition, reports from coordinators for some traits are described.

Hiroshi Ikehashi (Fac. Agr., Kyoto University, Kyoto, Japan)

Gene symbol: gal4

Gene name: gametophyte gene-14 (multiple alleles)

Character expression: Gamete abortion expressed as an allelic interaction such as

Name of original line: IR36 (gal4-i), Kamairazu (gal4-j) and Ketan Nangka

Gene locus: Chromosome 3; locates between Pgil and bcl with 0.2%

Remark: Data on F2 segregations are reported

Reference: Lu C. G., K. Takabatake, S. Lin and H. Ikehashi 1996.

Okayama University, Kurashiki, Japan)

Gene symbol: Rhz(t)
Gene name: Rhizomatous
Character expression: Rhizomes occur at the lower nodes
Name of original line: C105204 and C105198
Origin: 0. longistaminata from the International Rice Germplasm

Remark: Data on F2 segregations are reported.

Reference: Maekawa, M., K, Rikiishi, K. Matsuura and K. Noda 1996.Breeding Science 46(Suppl. 1) :323.

Agr., Hokkaido University, Sapporo, Japan)
Gene symbol: lkl(t)

Gene name: Nagayama 77402 long grain-1
Character expression: long grain
Name of original line: N-179

Origin: Spontaneous mutant from Nagayama 77402.
Remark: Data on F2 and F3 segregations and allelism tests with Lkf and

Reference: Takamure, I.., M. C. Hong and T. Kinoshita 1993. Japan. J.

Takamure, I.., M. C. Hong and T. Kinoshita 1995. RGN 12:
199-201.

Agr., Hokkaido University, Sapporo, Japan)
Gene symbol: Lk2(t)
Gene name: Nagayama 77402 long grain-2
Character expression: long grain
Name of original line: N-182

Reference: Takamure, I., M. C. Hong and T. Kinoshita 1993. Japan. J.

Takamure, I., M. C. Hong and T. Kinoshita 1995. RGN 12:
199-201

14 Rice Genetics Newsletter Vol. 13

(Fac. Agr., Hokkaido University, Sapporo, Japan)

Gene symbol: rcn6

Gene name: reduced culm number-6

Character expression: Few tillers Name of original line: N-186

Origin: Mutant induced by gamma rays from Shiokari

Remark: Data on F2 segregations and allelism tests with rcnl, rcn2,

rcn3, rcn4 and rcn5 are reported.

Reference: Takamure, I. and T. Kinoshita 1993. Mem. Fac. Agr.,

Hokkaido University 18(4):447-454. Takumure, I. and K. Onishi 1995.

Report of the Hokkaido Branch, Japan. Soc. Breed. 36: 52-53.

Agr., Hokkaido University, Sapporo, Japan)

Gene symbol: rp(t)

Gene name: retarded panicle

Character expression: Inhibition of panicle development under low temperature

Name of original line: N-180

Origin: Spontaneous mutant from Nagayama 77402

Remark: Data on F2 segregations are reported.

Reference: Aida, T. and I, Takamure 1995. Breeding Science 45(suppl.

GENE SYMBOL REGISTRATION No. 119

Registrant: Kuo-Hai Tsai (Agronomy Dept. National Chung-Hsing Uni-

versity, Taichung, Taiwan, ROC)

Gene symbol: Efl-n

Gene name: Earliness-l:n

Character expression: Twenty days earlier heading than T65. One of the multiple alleles at Efl locus,earliness order: Efl-n>Efl-b from Bozu 5>efl carried by T65.

Name of original line: T65(5) E-n-1 (near isogenic line of T65, donor was TN1, five

Origin: Derived from T65 x TN 1

Remark: Data on allelism test with Efl -b are reported.

Report of Committee on Gene Symbolization 15

Reference: Tsai, K. H. 1995. RGN 12: 204-206.

Davis, CA 95616, USA)
Gene symbol: Sub1
Gene name: Submergence tolerance-1
Character expression: Tolerance to submergence for 10-20 days.
Name of original line: IR40931 -26-3-3-5
Origin: Derived from the cultivar FR 13A
Gene locus: Chromosome 9

Remark: Mapped by linkage to RFLP markers in an F2/F3 population.
Reference: Xu, K. and D. J. Mackill 1995. RGN 12: 244-245.

GENE SYMBOL REGISTRATION No. 121

Registrant: Takatoshi Tanisaka, Naoki Takemori, Toshihito Yabu, Hi-
roaki Egashira, Yutaka Okumoto and Hirotada Yamagata
(Fac. Agr., Kyoto University, Kyoto, Japan)
Gene symbol: sd-9(t)
Gene name: semidwarf-9
Character expression: Reducing culm length by 20 % without any negative effects

on other practically important characters.
Origin: Gimbozu
Remark: Data on F2 segregation, F3 progeny tests, and allelism test

Reference: Tanisaka.T., N. Takemori, T. Yabu, H. Egashira, Y. Okumoto

Japan)

Gene symbol: Pil

Gene name: Pyricularia oryzae resistance-1

Character expression: Resistance to some races of the blast pathogen Pyricularia

Reference: Mackill, D. J. and M. Bonman 1992. Phytopathology 82:

746-749.
Inukai, T., R. J. Nelson, R. S. Zeigler, S. Sarkarung, D. J.

16 Rice Genetics Newsletter Vol. 13

Registrant: Tsuyoshi Inukai (Fac. Agr., Hokkaido University, Sapporo,

Japan)

Gene symbol: Pi3

Gene name: Pyricularia oryzae resistance-3

Character expression: Resistance to some races of the blast pathogen Pyricularia

Name of original line: Pai-kan-tao

Remark: A near-isogenic line is established. Data on F2 segregation and

Reference: Mackill, D. J. and M. Bonman 1992. Phytopathology 82:

Mackill, J. M. Bonman, I. Takamure and T. Kinoshita 1994. Phytopathology84:1278-1283.

Tanisaka (Fac. Agr., Kyoto University, Kyoto, Japan)

Gene symbol: Pi8

Gene name: Pyricularia oryzae resistance-8

Character expression: One of the two resistance genes detected in Kasalath (the other is Piz-t). This gene confers resistance to some races of the blast pathogen Pyricularia grisea

Name of original line: Kasalath

Gene locus: Chromosome 6; linked to isozyme markers Amp3 and Pgi2

Remark: Data on allelism tests and linkage tests are reported.

Reference: Pan, Q„ L. Wang, H. Ikehashi and T. Tanisaka 1

Phytopathology 86 (in press).

GENE SYMBOLREGISTRATION No.125

Registrant: Tsuyoshi Inukai (Fac. Agr., Hokkaido University, Sappor Japan)

Gene symbol: Pil2(t)

Gene name: Pyricularia oryzae resistance-12

Character expression: Resistance to some races of the blast pathogen Pyricularia

Name of original line: Moroberekan

Report of Committee on Gene Symbolization 17

Remark: Data on F2 segregation are reported

GENE SYMBOL REGISTRATION No. 126

Gene symbol: Pil3(t)

Gene name: Pyricularia oryzae resistance-13

Character expression: One of the two resistance genes detected in Maowangu (the
other is Pi14(t)). This gene confers resistance to some races of
the blast pathogen Pyricularia grisea
Name of original line: Maowangu

Gene locus: Chromosome 6; linked to marker genes Amp3 and C
Remark: Data on allelism tests and linkage tests using F3 lines are

Reference: Pan, Q., T. Tanisaka, Y. Okumoto and H. Yamagata 1993.

GENE SYMBOL REGISTRATION No. 127

Gene symbol: Pil4(t)

Gene name: Pyricularia oryzae resistance-14

Character expression: One of the two resistance genes detected in Maowangu (the
other is Pil3(t)). This gene confers resistance to some races of
the blast pathogen Pyricularia grisea
Name of original line: Maowangu

Gene locus: Chromosome 2; linked to isozyme marker Amp1

Remark: Data on allelism tests and linkage tests using F3 lines are

Reference: Pan, Q„ T. Tanisaka, Y. Okumoto and H. Yamagata 1993.

18 Rice Genetics Newsletter Vol. 13

Agr., Kyoto University, Kyoto, Japan)

Gene symbol: Pil5(t)

Gene name: Pyricularia oryzae resistance-15

Character expression: Resistance to some races of the blast pathogen Pyricularia

Name of original line: GA25

Gene locus: Linked to Pii

Remark: Data on allelism tests are reported.

Reference: Pan, Q., T. Tanisaka and H. Ikehashi 1996. Breeding Science

Agr., Kyoto University, Kyoto, Japan)

Gene symbol: Pil6(t)

Gene name: Pyricularia oryzae resistance-16

Character expression: One of the two resistance genes detected in GA20 (the other is Pik).

This gene confers resistance to some races of the blast

pathogen Pyricularia grisea

Name of original line: Aus373

Gene locus: Chromosome 2; linked to isozyme marker Amp1

Remark: Data on allelism tests and linkage tests are attached.

Agr., Kyoto University, Kyoto, Japan)

Gene symbol: Pil7(t)

Gene name: Pyricularia oryzae resistance-17

Character expression: Resistance to some races of the blast pathogen Pyricularia

Name of original line: DJ 123

Gene locus: Chromosome 7: linked to isozyme marker Est9

Remark: Data on allelism tests and linkage tests are attached.

Errata for gene symbol registration in RGN Vol. 12