Evaluation of Alkalince Tolerance at the Seedling Stage for Japonica Rice Germplasm Resources
Using 378 japonica rice germplasm resources from 14 foreign countries and 13 provinces of China, the dead leaf rate at the seedling stage under different alkaline stress was evaluated, and japonica rice germplasm resources with strong alkaline tolerance were selected. The results showed
that the dead leaf rate under alkaline stress for pH9.4 was significantly larger than that under alkaline stress for pH 8.9, while alkaline stress for pH 8.9 was more suited to evaluate the dead leaf rate for japonica rice germplasm resources. The alkaline tolerance among different japonica
rice germplasm resources from different geographical origins under alkaline stress for pH8.9 was significantly different. The japonica rice germplasm resources from Australia, Italy and Jiangxi province of China were appeared lower dead leaf rate, which had stronger alkaline tolerance than
others. The dead leaf rate of tested materials during 16 days to 26 days under alkaline stress for pH8.9 were ranged from 20% to 100%, and which showed continuous distribution near normal with larger variance and coefficient of variation. So these period was considered fit to evaluate the
alkaline tolerance for japonica rice germplasm resources. Twenty-one japonica rice germplasm resources, such as YR196, Baru, Fengjin, Nipponbare, 8068, Suijing 5 and so on with strong alkaline tolerance were selected, which showed stronger alkaline tolerance with less than 40% of the dead
leaf rate when 16 days under alkaline stress for pH8.9. These rice germplasm resources could be applied for further rice alkaline tolerance breeding.
Keywords: Alkaline stress; Dead leaf rate; Germplasm resources; Japonica rice
Document Type: Research Article
Publication date: 15 January 2011
- Journal of plant genetic resources is devoted to reporting new and original experimental and theoretical basic research of interest to genetic resources, gene mining, brief information,and germplasm innovation. Manuscripts that are essentially reporting data, applications of data, or reviews of the literature are not suitable for publication in Journal of plant genetic resources.
Journal of plant genetic resources was founded in 2000 and is sponsored by the institute of crop sciences of chinese academy of agriculture sciences and China association of agricultural science societies. Since 2003, Journal of plant genetic resources has been indexed in China scientific journal database (CSJD), Chinese core journals (selection) database,Chinese science citation database (CSCD), and so on. - Editorial Board
- Information for Authors
- Submit a Paper
- Ingenta Connect is not responsible for the content or availability of external websites
- Access Key
- Free content
- Partial Free content
- New content
- Open access content
- Partial Open access content
- Subscribed content
- Partial Subscribed content
- Free trial content