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การประเมินลักษณะทนแล้งใน chromosome substitution lines (CSSL) ของข้าวขาวดอกมะลิ 105 ในระยะออกดอก (The Evaluation of Some Drought Stress Tolerance Phenotypes in Chromosome Substitution Lines (CSSL) of KhaoDok Mali 105 Rice (Oryza sativa L. |
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| รหัสดีโอไอ | |
| Creator | วราลักษณ์ เกษตรานันท์ |
| Title | การประเมินลักษณะทนแล้งใน chromosome substitution lines (CSSL) ของข้าวขาวดอกมะลิ 105 ในระยะออกดอก (The Evaluation of Some Drought Stress Tolerance Phenotypes in Chromosome Substitution Lines (CSSL) of KhaoDok Mali 105 Rice (Oryza sativa L. |
| Publisher | Genetics Society of Thailand |
| Publication Year | 2556 |
| Journal Title | Thai Journal of Genetics |
| Journal Vol. | S.1 |
| Journal No. | S1 (Special Issue 1) |
| Page no. | 411 |
| Keyword | rice, drought, leaf water potential, cell membrane stability, stay green phenotype |
| ISSN | 8578664 |
| Abstract | Some physiological traits responding to drought stress, which were leaf water potential (LWP), cell membrane stability (CMS), and stay green score, were evaluated in chromosome substitution lines (CSSL) populations (substitution in chromosome 1, 3, 4, 8 and 9) of rice with KhaoDok Mali 105 (KDML 105) genetic background. The aim of the research was to determine the region from which chromosome was responsible for the physiological traits responding to drought stress at booting stage. It was shown that CSSL with substitution in chromosome 1, 3, 8 and 9 had the higher LWP than KDML105, while the CSSL containing the substitution in chromosome 4 did not. This suggested that the gene(s) responsible for LWP adjustment during drought stress located on chromosome 1 , 3, 8 and 9. After 14 days of drought stress, CSSL with substitution in chromosome 1, 3, 4, 8 and 9 showed the higher % CMS than KDML105 suggesting the location of the genes involving in CMS response on all chromosome tested. The stay green phenotype at flowering stage was suggested to be located on chromosome 1 and 9 as they could maintain the stay green phenotype similar to what found in the double haploid parent lines. |
