浙江农林大学学报2018，Vol.35Issue(3)：490-496,7.DOI:10.11833/j.issn.2095-0756.2018.03.013
水稻种子休眠特性与耐藏性的关系
Dormancy characteristics and seed storage tolerance in rice
摘要
Abstract
The relationship between rice seed storage tolerance and dormancy characteristics was determined for two Oryza sativa subsp. sativa (rice) cultivars with different characteristics of dormancy [4K58 (Ⅱ-32B dor-mant), 4K59 (Ⅱ-32B)] and their F2 seeds (C178, C179) hybridized with a sterile line (Ⅱ-32A) as materi-als. Different aged seeds (0 d, 3 d, 6 d, or 9 d) of these four varieties were acquired by the artificial accelerat-ed aging method. Seed conductivity, single nucleotide extract content, germination indices, and growth parame-ters of seedlings were measured in a CRD design with treatments of ck, 3, 6, 9 d with 3 replications. All data obtained were statistically analyzed with one-way ANOVA and least significant difference method (LSD) test. Results showed that seed conductivity, and single nucleotide extract content of aged 4K58 seeds were signifi-cantly higher than those of 4K59 (P<0.05) with maximum discrepancy of single nucleotide extract content in multiples of 14.5. However, germination energy and germination index of 4K58 were significantly lower than those of 4K59 (P<0.05) having a mean germination time that was significantly higher than 4K59 (P<0.05). Also the single nucleotide extract content and mean germination time of aged C178 seeds were significantly higher than those of C179 (P<0.05); whereas, germination percentage, germination index, shoot length, and fresh weight were significantly lower than C179 (P<0.05). Thus, storage properties may be passed on to suc-ceeding generations, and rice seed with dormant properties may not be suitable for storage.关键词
植物生理学/种子/休眠/耐藏性/水稻/人工加速老化Key words
plant physiology/seed/dormancy/storage tolerance/rice/artificial accelerated aging分类
农业科技引用本文复制引用
陈志超,黄婷婷,王洋,吴洪恺,陈璋琦,陶若芙..水稻种子休眠特性与耐藏性的关系[J].浙江农林大学学报,2018,35(3):490-496,7.基金项目
国家自然科学基金资助项目(31501394) （31501394）
浙江农林大学科研发展基金人才启动项目(2014FR057) （2014FR057）
