Rice Genetics Newsletter 14 (1997)

N. iwata, convener

1. Registration of new gene symbols
2. The following genes are newly registered:

GENE SYMBOL REGISTRATION No. 131

Kazutoshi Okuno and Shuichi Fukuoka (National Institute of Agrobiological Resources, Tsukuba, Japan)

hybrid weakness (complementary)

Weakness occurs in F₂ from varietal crosses having complementary gene hwd2

Col. No. 15

Thailand

Chromosome 10

Mapped by linkage to RFLP markers in F₂ populations Okuno, K. 1985. RGN 2:54-54.; Fukuoka et al. 1997. Breeding Science 47 (Suppl. l):32.

GENE SYMBOL REGISTRATION No. 132

Kazutoshi Okuno and Shuichi Fukuoka (National Institute of Agrobiological Resources, Tsukuba, Japan)

hybrid weakness (complementary)

Weakness occurs in F₂ from varietal crosses having complementary gene hwdl

Sasanishiki

Japan

Chromosome 7

Mapped by linkage to RFLP markers in F₂ populations Okuno, K. 1985. RGN 2:52-54.; Fukuoka et al.. 1997. Breeding Science 47 (Suppl. l):32.

Gene symbol: An4

Rice Genetics Newsletter Vol. 14

Awn-4

Incomplete dominance for number of awned spikelets per panicle and awn length

T65 Awn or T65 An4, which is an isogenic line ofTaichung 65 with the An4 gene.

Kokushokuto-2 (A58)

Chromosome 8

Data on segregations in successive backcrossing F₁ and F₂ plants for breeding of T65 An4, and linkage data were reported. Sato,S.,S.lshikawa,M.ShimonoandC.Shinjyo. 1996. Breeding Science 46:321-327.

GENE SYMBOL REGISTRATION No. 134

Yoshimichi Fukuta (Hokuriku National Agricultural Experiment Station. MAFF, Joetsu, Niigata 943-01, Japan)

shattering-4

Resistance to shattering SR-5 (Hokuriku 143)

Mutant induced from an Indica type variety, Nan-jing 11, by gamma-ray irradiation to seed.

Chromosome 3

Data on F₂ generation and linkage analysis are reported. Fukuta, Y. 1995. Breeding Science 45 (Suppl.l):89

GENE SYMBOL REGISTRATION No. 135

Ahn, S.N. (National Crop Experiment Station, RDA, Suweon, Korea)

Pyricularia orywe resistance-18

Resistance to Kl-313 race of the blast pathogen isolated in Korea Suweon 365

Chromosome 11

Mapped by linkage to RFLP markers in an F₂/F₃ population.

Ahn, S.N., Y.K. Kirn, S.S. Han, H.C. Choi, H.P. Moon, and S.R.McCouch. 1996. RGN 13:74-76

GENE SYMBOL REGISTRATION NO. 136

Kannondai 3-1-1, Tsukuba, lbaraki, Japan)

Gene symbol: Pi 79(t)

Gene name: Pyricularia orywe resistance-19

Report of Committee on Gene Symbolization

Resistance to isolate CHNOS58-3-1 of the blast pathogen P\ricularia grisea.

Chromosome 12: allelic or closely linked to Pita-2.

Aichi Asahi

Data on F₂ and F₃, lines, and allelism test using F₃, lines are reported.

Hayashi, N., 1. Ando, and T. Imbe Phytopathology (to be submitted)

GENE SYMBOL REGISTRATION No. 137

Tokio Imbe (IRRI, P.O. Box 933, Manila, Philippines)

Pyricularia oryzae resistance-20

Resistance to some races of the blast pathogen Pyricularia grisea IR24

Chromosome 12; linked to blast resistance gene Pi ta

Data on F₃ lines, BC₁ F₂ lines, recombinant inbred lines, and allelism test using F₃ lines are reported.

Imbe, T., S. Oba, M. J. T. Yanoria and H. Tsunematsu 1997. RGN 14:60-62