Varietal Difference in Pre-germination Flooding Tolerance and Waterlogging Tolerance at the Seedling Stage in Maize Inbred Lines(Genetic Resources and Evaluation)

Japanese Journal of Crop Science

Toshinori KOMATSU¹  Yoshiro MANO¹  Masahiro FUJIMORI¹  Tadashi TAKAMIZO¹  Fumiaki AKIYAMA¹  Masanori MURAKI¹ 

关键词: Genetic resource;    遺伝資源;    Germination;    冠水抵抗性;    Maize;    耐湿性;    Pre-germination flooding tolerance;    トウモロコシ;    Seedling;    発芽;    Waterlogging tolerance;    幼植物;   

DOI  :  10.1626/jcs.71.361

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

Maize inbred lines, mainly collected from Japan and the United States of America were evaluated for their pre-germination flooding tolerance and waterlogging tolerance at the seedling stage. Pre-germination flooding tolerance, evaluated by germination rate of the seeds soaked for 8 days at 25°C, showed wide variations among 46 lines. Waterlogging tolerance at the seedling stage was evaluated by the dry weight ratio (treatment/control) after exposure to flooding for 2 weeks. The waterlogging tolerance showed an extremely wide variation among 223 inbred lines, and some highly tolerant lines were selected. Correlation coefficients between replications were 0.415 in pre-germination flooding tolerance and 0.464 in waterlogging tolerance, indicating the significant repeatability of the experiments. Pre-germination flooding tolerance of maize was independent of the waterlogging tolerance at the seedling stage.

【 授权许可】

Unknown