| Imbibitions, energy test and accelerated ageing in primed and non-primed seeds of Peltophorum dubium |
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| 作者姓名： | LILei-hong ZHANGWan-li ZUYuan-gang SONIAPerez |
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| 作者单位： | [1]KeyLaboratoryofForestPlantEcology,NortheastForestry,University,,Harbin150040,China [2]EastChinaNormalUniversity＇Shanghai200062,China [3]FederalUniversityofSaoCarlos,SaoCarlos13565-905,Brazil |
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| 摘 要： | 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).
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| 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 |
| 收稿时间： | 28 March 2005 |
Imbibitions, energy test and accelerated ageing in primed and non-primed seeds ofPeltophorum dubium |
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| LILei-hong ZHANGWan-li ZUYuan-gang SONIAPerez.Imbibitions, energy test and accelerated ageing in primed and non-primed seeds of Peltophorum dubium[J].Journal of Forestry Research,2005,16(2):113-116. |
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| Authors: | Li Lei-hong Zhang Wan-li Zu Yuan-gang Sonia Perez |
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| Institution: | (1) Key Laboratory of Forest Plant Ecology, Northeast Forestry University, 150040 Harbin, China;(2) East China Normal University, 200062 Shanghai, China;(3) Federal University of Sao Carlos, 13565-905 Sao Carlos, Brazil |
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| Abstract: | Peltophorum dubium seeds were set to imbibe with four treatments, soaked with solution Captan 0.2% under 10 and 27°C, PEG 6000-1.0 MPa under
10 and 27°C. 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 inbibition 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°C, primed with Captan 0.2% at 10 and 27°C. 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°C soaked in distilled water during 12 h were the highest, reaching 100%.
The lowest germination percentage occurred primed seeds with PEG6000 27°C and soaked in distilled water during 36 h, which
was only 52%. Germination mean time of primed seeds in PEG at 10°C, soaked 24 h was 1.08 days, mean time of primed seeds in
PEG at 27°C 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°C) and vermiculate (room temperature).
Foundation item: This work is supported by CAPES, Brazil. Open research laboratory of forest plant ecology, Northeast Forestry University
and The State's tenth five-year “211 Project”-supported key academic discipline program of ECNU.
Biography: Li Lei-hong (1971-), Engineer, Northeast Forestry University, Harbin 150040, P. R. China
Responsible editor: Chai Ruihai |
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| Keywords: | Peltophorum dubium Seeds Imbibition Priming Germination Ageing |
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