Identification and Genetic Analysis of a Thermo-sensitive Seedling-colour Mutant in Rice(Oryza sativa L.).
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Accession number;01A0355609
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| Title;Identification and Genetic Analysis of a Thermo-sensitive Seedling-colour Mutant in Rice(Oryza sativa L.). |
| Author;
DONG Y
(Crop Res. Inst., Zhejiang Acad. Agricultural Sci., Hangzhou, Chn)
DONG W
(Crop Res. Inst., Zhejiang Acad. Agricultural Sci., Hangzhou, Chn)
SHI S
(Crop Res. Inst., Zhejiang Acad. Agricultural Sci., Hangzhou, Chn)
JIN Q
(Crop Res. Inst., Zhejiang Acad. Agricultural Sci., Hangzhou, Chn)
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Journal Title;Breed Sci
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Journal Code:Y0311B
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ISSN:1344-7610
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VOL.51;NO.1;PAGE.1-4(2001)
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| Figure&Table&Reference;TBL.5, REF.7 |
| Pub. Country;Japan |
| Language;English |
| Abstract;A thermo-sensitive seedling-colour mutant 7436S was detected in the field from a breeding nursery in China, in 1991. The experiments were conducted at artificially controlled temperatures(23.1.DEG.C., 26.1.DEG.C., 30.1.DEG.C.) in growth chambers. The results showed that the seedling colour of the mutant 7436S was white(23.1.DEG.C.), light yellow(26.1.DEG.C.) and normal green(30.1.DEG.C.) at 10 days after sowing and yellowish green(23.1.DEG.C.) and normal green(26.1.DEG.C., 30.1.DEG.C.) at 20 days after sowing, respectively. It was concluded that its thermo-sensitivity decreased gradually with the increase of the seedling age. In addition, its thermo-sensitivity for seedling colour was oriented, as white seedlings turned green at high temperatures, but not in the opposite direction. The segregation ratios in the F2 populations showed that a recessive nuclear gene(tentatively designated as tsc-1) controlled the thermo-sensitive seedling-colour character. Based on genetic linkage and the recombination value(34.1%) between the tsc-1 gene and short panicle morphological marker(sp) gene in the F2 generation, the results indicated that the tsc-1 gene was located on chromosome 11. (author abst.) |
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