ผลของความเค็มในดินต่ออัตราส่วนโซเดียมและโพแทสเซียมไอออนในข้าว Oryza sativa L. พื้นเมืองไทยและการเชื่อมโยงทั่วจีโนมเพื่อการทำนายยีนที่เกี่ยวกับการสะสมโซเดียมและโพแทสเซียมไอออน

• 主要作者: ณัฐธยาน์ ตันติภิรมย์
• 其他作者: ศุภจิตรา ชัชวาลย์
• 格式: Theses and Dissertations
• 語言: Thai
• 出版: จุฬาลงกรณ์มหาวิทยาลัย 2016
• 主題: ดิน > ปริมาณโซเดียม; ดิน > ปริมาณโพแทสเซียม; Soils > Sodium content; Soils > Potassium content
• 在線閱讀: https://digiverse.chula.ac.th/Info/item/dc:34218

This study aims to determine sodium ion (Na+) content, potassium ion (K+) content, and sodium potassium ratio (Na+/K+) in leaf tissue of 80 local and improved Thai rice varieties/lines under control and salt stress conditions was at 9 dS/m for 6 and 9 days. The results showed an increase of Na+ content, decrease of K+ and increase of Na+/K+ in all cultivars after salt treatment except in some cultivars which showed an increase of K+ content after salt treatment. The determination of correlation between ion accumulation and growth parameters showed that Na+/K+ was the parameter which was correlated to most number of growth parameters. Ion accumulation data were used to perform an association analysis with the SNPs of 80 rice cultivars to find the SNPs which associated with Na+ and K+ accumulation in rice. The association results revealed 59 significant SNPs which located in different candidate genes in the cell. Three selected candidate genes including LOC_Os01g12540.2, LOC_Os01g12650.1 and LOC_Os06g48810.1 were selected to determine the expression level in 4 rice cultivars under control and salt stress conditions. Expression level of LOC_Os01g12540.2 in both control and salt stress condition were not significantly different after 3 and 6 days while expression level of LOC_Os01g12650.1 and LOC_Os48810.1 increased in all cultivars when exposed to salinity for 6 days, these genes should be studied for the role in salt stress response in the future.