A. Report of the Coordinating Committee of the Rice Genetics Cooperative (G.S. Khush and A. Hirai) ...............5

B. Report of the Committee on Gene Symbols (A. Yoshimura and Y. Nagato) ............... 6

C. Research Notes

I. Varietal differentiation and evolution

1. Evaluation of upland rice genetic resources in northern Laos, by S. Yamanaka, R. Ishikawa, Y. Fukuta, I. Nakamura, T. Sato and Y.-I. Sato ...............9
   
   
2. Rhizomatous individual was obtained from interspecific BC₂F₁ progenies between Oryza sativa and Oryza longistaminata, by D. Tao, F. Hu, Y. Yang, P. Xu, J. Li,G. Wen, E. Sacks, K. McNally and P. Sripichitt ............... 11

II. Genetics of morphological traits

3. Comparative analysis of QTL for regeneration ability on barley 2H chromosome and rice chromosome 4, by F. Taguchi-Shiobara, T. Komatsuda and S. Oka............... 14
   
   
4. msp1 mutant aberrant for archesporial cell division in the anther and ovule of rice, by K.I. Nonomura, K. Miyoshi, M. Eiguchi, A. Miyao, H. Hirochika and N. Kurata ............... 16
   
   
5. High resolution mapping of SHOOT ORGANIZATION 2 gene, SHO2, by M. Mukohhata CM. Ashikari, H. Kitano, Y. Nagato and M. Matsuoka ............... 17
   
   
6. A mutant showing pleiotropic abnormalities in root, shoot and flower development in rice, by T. Sumikura and Y. Nagato ............... 19
   
   
7. PLASTOCHRON2 gene regulates the plastochron and the duration of vegetative phase, by T. Kawakatsu, J.-I. Itoh and Y. Nagato ............... 21
   
   
8. GYPSY EMBRYO gene controls embryo position by regulating integument development, by S. Yamaki and Y. Nagato ............... 24
   
   
9. RFLP mapping of genes for long kernel and awn on chromosome 3 in rice, by T. Kubo, N. Takano-Kai and A. Yoshimura ............... 26
   
   
10. RFLP mapping of the genes for awn on chromosomes 4 and 5 in rice using the Oryza meridionalis introgression lines, by T. Kurakazu, Sobrizal and A. Yoshimura ............... 28
    
    
11. Mapping of the rice MORI1 gene, by A. Nishimura, Y. Sato, H. Kitano, Y. Nagato, M. Ashikari and M. Matsuoka ............... 30
    
    
12. Mapping of the ABERRANT REGIONALIZATION OF EMBRYO 1 gene, ARE1, by CAPS analysis, by M. Ito, Y. Sato, H. Kitano, Y. Nagato, M. Ashikari andM. Matsuoka ............... 31
    
    
13. Mapping of the ORGANLESS1 gene, ORL1, by N. Kamiya, M. Ashikari, Y. Sato, Y. Nagato, H. Kitano and M. Matsuoka ............... 33
    
    
14. Two dominant complementary genes controlling rhizomatous expression in Oryza longistaminata, by F.-Y. Hu, D.-Y. Tao, P. Xu, J. Li, Y. Yang, E. Sacks, K. McNally, T.S. Cruz, J. Zhou and Z.-K. Li ............... 34

III. Genetics of physiological traits and others

15. Somatic reversion induced by ion beam irradiation in stable yellow leaf mutant of rice, by M. Maekawa, A. Tanaka, N. Shikazono and Y. Hase ............... 36
    
    
16. Loci of rice sucrose synthase, by N. Kishimoto, H. Akagi, T. Satozawa, M. Sakamoto, T. Fujimura, K. Higo and H. Shimada ............... 39
    
    
17. Genic female sterility as a tool for analyzing the mechanism of photosynthate translocation in rice, by M. Yokoo and M. Kato ............... 41
    
    
18. Variation of glutelin seed storage protein in Bangladesh rice cultivars, by M.S. Jahan, T. Kumamaru, H. Satoh and A. Hamid ............... 43
    
    
19. Variation in three important starch characters in Myanmar local rice cultivars for cooking and eating quality, by P.P. Aung, T. Kumamaru and H. Satoh ............... 46
    
    
20. Gene analysis of a new 57H mutant gene, glup6, in rice, by H.D. Tian, T. Kumamaru, Y. Takemoto, M. Ogawa and H. Satoh ............... 48
    
    
21. Genetic variation of glutelin seed storage protein in Myanmar local rice cultivars, by P.P. Aung, T. Kumamaru and H. Satoh ............... 50
    
    
22. Linkage analysis of an F₁ sterility gene in Japonica / Indica cross of rice, by T. Kubo and A. Yoshimura ............... 52
    
    
23. A new gene for F₁ pollen sterility located on chromosome 12 in Japonica / Indica cross of rice, by T. Kubo, M. Eguchi and A. Yoshimura ............... 54
    
    
24. Identification of a new gene for spotted leaf found in Japonica-Indica hybrid population of rice, by T. Kubo, T. Kuchiishi and A. Yoshimura ............... 55
    
    
25. RFLP mapping of genes controlling heading date found in Oryza glumaepatula Steud. introgression lines in rice, by P.L. Sanchez, Sobrizal, K. Ikeda, H. Yasui and A. Yoshimura ............... 57
    
    
26. Mapping of a gene for pollen semi-sterility on chromosome 8 of rice, by Sobrizal, Y. Matsuzaki and A. Yoshimura ............... 59
    
    
27. Mapping of a gene for F₂ weakness on chromosome 4 of rice, by Sobrizal, C. Tanaka, H. Yasui and A. Yoshimura ............... 61
    
    
28. The effect of cytoplasmic male sterility factor in rice anther culture, by S.M. Balachandran, N.P. Sarma and E. Asiddiq ............... 63
    

IV. Genetics of disease and insect resistance

29. Identification of a new gene for resistance to bacterial blight in a somaclonal mutant HX-3 (indica), by D.Y. Gao, Z.G. Xu, Z.Y. Chen, L.H. Sun, Q.M. Sun, F. Lu, B. Shu, Y.F. Liu and L.H. Tang ............... 66
    
    
30. Genetic drag between a blast resistance gene and QTL conditioning yield trait detected in a recombinant inbred line population in rice, by J.-Y. Zhuang, J.-L. Wu, Y.-Y. Fan, Z.-M. Rao and K.-L. Zheng ............... 69
    
    
31. The effectiveness of advanced rice lines with new resistance gene Xa23 to rice bacterial blight, by Q. Zhang, C.L. Wang, K.J. Zhao, Y.L. Zhao, V.C. Caslana, X.D. Zhu, D.Y. Li and Q.X. Jiang ............... 71
    

V. Gene and genome structure

32. Evaluation of the genetic diversity and subcellular localization of mitochondrial ribosomal protein S10, by N. Kubo, S. Arimura, N. Tsutsumi and K. Kadowaki ............... 73
    
    
33. Transcription and editing status of ribosomal protein S2 gene in rice mitochondria, by N. Kubo, A. Hirai and K. Kadowaki ............... 75
    
    
34. Insertion of two Tnr1-like transposable DNA elements into the first intron of OsCOX6b1 does not affect transcription of the gene, by K. Ohtsu, M. Nakazono, N. Tsutsumi and A. HiraiI ............... 77
    
    
35. Expression of nuclear- and mitochondrial-encoded respiratory genes in rice under environmental stresses, by H. Saika, K. Ohtsu, M. Nakazono, N. Tsutsumi and A. Hirai ............... 79
    
    
36. Oryza meridionalis chromosomal segment introgression lines in cultivated rice, O. sativa L., by T. Kurakazu, Sobrizal, K. Ikeda, P.L. Sanchez, K. Doi, E.R. Angeles, G.S. Khush and A. Yoshimura ............... 81
    
    
37. Detection of the pre-meiotic DNA synthesis in pollen mother cells by immunofluorescence technique in rice, by K. Miyoshi, N. Kurata and K.I. Nonomura ............... 82
    
    
38. Agrobacterium-mediated transformation of Basmati rice to express the barley HVA I gene for enhanced tolerance to abiotic stress, by J.S. Rohila, R.K. Jain and R. Wu ............... 84
    
    
39. Accumulation of trehalose in transgenic indica rice using bifunctional fusion enzyme of trehalose-6-phosphate synthase and trehalose-6-phosphate phosphatase of Escherichia coli, by A.K. Garg, J.-K. Kim, A. Ranwala and R. Wu ............... 87
    
    
40. Subspecies specific RAPD markers in rice, by Y.-Z. Jiang, S.-X. Tang, D.S. Brar and Z.-K. Li ............... 90
    
    
41. Development of dihaploid transgenic "golden rice" homozygous for genes involved in the metabolic pathway for beta-carotene biosynthesis, by N. Baisakh, K. Datta, M. Rai, S. Rehana, P. Beyer, Potrykus and S.K. Datta ............... 91
    
    
42. DNA isolation from milled rice samples for PCR-based molecular marker analysis, by S. Pal, S. Jain, N. Saini and R. Jain ............... 94
    
    
43. Isolation of insertional mutants in indica rice using Ds transposable element of maize, by H.S. Dhaliwal, Aparna Das, B. Singh and V.K. Gupta ............... 98
    
    
44. Proteomic analysis of rice endosperm proteins, by T. Kaneko, M. Ishizaka and H. Kajiwara ............... 100
    
    
45. Correlation coefficient analysis in identifying molecular markers associated with seedling rice root, by J. Xu, L. Zou and L. Zhu ............... 102