| 孟帅帅, 黄兆峰, 苏杰天, 陈召霞, 姜翠兰, 马子晴, 黄红娟*, 魏守辉*.苘麻不同种群的种子萌发特性[J].植物保护,2021,47(4):113-117. |
| 苘麻不同种群的种子萌发特性 |
| Seed germination of different populations of Abutilon theophrasti |
| 投稿时间：2020-05-26 修订日期：2020-07-24 |
| DOI：10.16688/j.zwbh.2020266 |
| 中文关键词: 苘麻 种子 萌发 种群差异 |
| 英文关键词:Abutilon theophrasti seed germination population difference |
| 基金项目:国家重点研发计划(2018YFD0200602); 兵团科技发展专项资金(2018AA006); 科技基础性工作专项(2013FY113200) |
|
| 摘要点击次数: 548 |
| 全文下载次数: 676 |
| 中文摘要: |
| 为揭示农田恶性杂草苘麻种子的休眠萌发机制, 探寻基于休眠调控的绿色防控途径, 采用60℃温水浸种30 min+30℃恒温培养的方法测定了不同种群苘麻 Abutilon theophrasti 种子的萌发率?萌发势与萌发指数?结果表明, 供试的18个种群中, 种群XJ01?JL04和JL01的萌发率分别为89.95%?89.18%和87.77%, 显著高于其他种群; 而种群HB01的萌发率最低, 仅为41.50%?测定了萌发差异较大的种群JL01和HB01种子的萌发关键期指标, 发现JL01种群在温水浸种后培养2 h的吸胀数量?10 h破皮数量和20 h露白数量, 显著高于HB01种群, 其种子数量分别是HB01种群的1.37?1.76和2.96倍?通过进一步比较8个种群种子的萌发吸胀?破皮与露白数量指标, 证实苘麻不同种群种子存在显著休眠萌发差异, 其原因可能是由于母体生活环境不同所致? |
| 英文摘要: |
| In order to reveal the mechanism of seed dormancy and germination of Abutilon theophrasti, a worst weed in farmland, and develop the green prevention and control strategy based on dormancy regulation, the germination rate, germination potential and germination index of different populations of A. theophrasti were determined by soaking seeds in 60℃ warm water for 30 min and incubating in growth chamber at a constant temperature of 30℃. The results showed that the germination rates of XJ01, JL04 and JL01 were 89.95%, 89.18% and 87.77%, respectively, which were significantly higher than those of other populations. The germination rate of HB01 was 41.50%, which was significantly lower than those of other populations. Furthermore, the key germination parameters of JL01 and HB01 were measured during seed imbibition. It was found that there were significant differences between them in the numbers of seed imbibition in 2 h, seed coat rupture in 10 h and radicle protrusion in 20 h. These three parameters of JL01 were 1.37, 1.76 and 2.96 times higher than those of HB01, respectively. By comparing the numbers of seed imbibition, seed coat rupture, and radicle protrusion of eight A. theophrasti populations, we concluded that the difference of seed dormancy level was possibly related to the different environmental conditions of their mother plants, which resulted in the differences of seed germination among different populations of A.theophrasti. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
