International Rice Research Institiute, P.O. Box 933, Manila, Philippines
The recessive mutant g of rice, which conditions long empty glumes
instead of rudimentary glumes of the grain, is a very useful marker of
linkage group IV. Many rice varieties in our germplasm bank have long empty
glumes. In search of new loci, conditioning long empty glumes, we studied
the allelic relationships of the genes for long glumes in these varieties
with the known g gene (RGS 10). A total of 49 varieties from 14 countries
(Table 1) were crossed with IR36 had rudimentary glumes and with RGS 10. All
the F\1\'s with IR36 had rudimentary glumes thus indicating that long empty
glumes in all of these varieties are under recessive gene control. The
F\1\'s of all of these varieties with RGS 10 had long empty glumes thereby
showing that the recessive genes conditioning long empty glumes in all these
varieties are allelic to g. Since these varieties come from many different
countries, they are unrelated to each other. Thus the different mutational
events must have occurred at the same locus as independent events. Our
search for a new locus conditioning long empty glumes was unfruitful.
Table 1. Varieties from the IRRI germplasm bank with long empty glumes
analyzed in this study
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Acc. No. Variety Name Country of
Origin
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1349 P.I. 160764-2 China
1358 P.I. 160769-1 China
1454 P.I. 160863-1 China
1535 Fei Oh Chan China
1537 Pien Chan Ying Tao China
1583 Chang Ch'sang
Hsu Tao China
2809 Paiyautsuru 4 Taiwan
4000 Gungen-lang-shui-pe Philippines
4212 Boenar Indonesia
5999 Pankhari 203 India
6574 Pankiraj 258 Banglasesh
8268 Pappaku Taiwan
8519 DZ 180 Bangladesh
8739 UCP 38 Bangladesh
11875 Kh. Nganh Tamay Laos
15165 C Ivory Coast
15900 Ebagagona Senegal
17065 Napatsupai Taiwan
17909 Ketan Manggaran Indonesia
22422 ARC 12889 India
23240 Slab Cambodia
23267 Srau Slap Cambodia
23527 Khao Pick Deng Laos
24182 Ba Ponar Vietnam
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Acc. No. Variety Name Country of
Origin
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25218 Luttu Indonesia
25599 Pulut Kalesa Indonesia
27038 Ase Pulu Haji Indonesia
27050 Ase Pulut Cambang Indonesia
28493 Tsao-fei-lai-feng China
30593 Payon Sierra Leone
30733 Jebowalogi (A2-102) Liberia
30740 Kartiwegee (A2-76) Liberia
30795 Maniqui (A2-95) Liberia
30809 Netemah (A2-98) Liberia
30864 Liberian Coll. D1-31 Liberia
31335 Liberian Coll. B-72 Liberia
31576 Fori Pakri Bangladesh
33757 Taungpyanyin Burma
33758 Taungpyanyin Burma
35091 Pakhai Raj India
38132 Pankhiraj 26-551 Bangladesh
41335 ARC 14035 India
42829 ARC 13994 India
43240 ARC 15858 India
46511 Pankhasail India
46512 Pankheraj India
47039 2-IS13-C77 Ivory Coast
50855 Kopike 1 (531) Ivory Coast
53392 Fei-lai-feng China
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