Imbibitions, energy test and accelerated ageing in primed and non-primed seeds of Peltophorum dubium

编号 zgly0000361549

文献类型 期刊论文

文献题名 Imbibitions, energy test and accelerated ageing in primed and non-primed seeds of Peltophorum dubium

学科分类 220.99;林学其他学科

作者 LILei-hong  ZHANGWan-li  ZUYuan-gang  SONIAPerez 

作者单位 KeyLaboratoryofForestPlantEcology  NortheastForestry  University    Harbin150040  China  EastChinaNormalUniversity＇Shanghai200062  China  FederalUniversityofSaoCarlos  SaoCarlos13565-905  Brazil 

母体文献 Journal of Forestry Research;林业研究: 英文版 

年卷期 2005,16(2)

页码 113-116

年份 2005 

分类号 S792.99  S722.14 

关键词 巴西盾柱木  种子处理  种子吸涨  种子活力  种子萌发率  种子老化 

文摘内容 Peltophorum dubium seeds were set to imbibe with four treatments, soaked with solution Captan 0.2% under 10and 27℃,PEG 6000 -1.0 MPa under 10 and 27℃. For each treatment there were four replicates with 40 seeds incubated in 9-cm Petri dishes with double filter paper moistened with testing solution. The imbibition curves showed that the final weight increase were from 70% to 150% in the treatments when imbibition entered a lag phase. Seeds were tested for effects on germination of five treatments: control group (nonprimed), primed with PEG6000 -1.0 MPa at 10 and 27℃, primed with Captan 0.2% at 10 and 27℃. For each treatment, there were three sub-treatments: seeds were soaked in distilled water for 12, 24 and 36h before the energy test. Germination percentages of nonprimed seeds and primed in PEG 27℃ soaked in distilled water during 12 h were the highest, reaching 100%. The lowest germination percentage occurred primed seeds with PEG6000 27℃ and soaked in distilled water during 36 h, which was only 52%. Germination mean time of primed seeds in PEG at 10℃, soaked 24 h was 1.08 days, mean time of primed seeds in PEG at 27℃ soaked 12 h was 2.42 days. Accelerated ageing results showed low or no germination after ageing 72 h. Control group had a higher germination percentage and seeds were more resistant to deterioration than those in primed groups, both in Petri dish (27℃) and vermiculate (room temperature)。