华北落叶松和日本落叶松种子超干保存活力和生理特性研究

李庆梅; 刘艳; 陈怀梁; 马风云; 侯龙鱼

华北落叶松和日本落叶松种子超干保存活力和生理特性研究

1 中国林业科学研究院林业研究所，国家林业局林木培育重点实验室2 北京林业大学省部共建森林培育与保护教育部重点实验室3 山东农业大学林学院 4 中国科学院植物研究所

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出版历程
- 收稿日期: 1899-12-31
- 修回日期: 1899-12-31
- 发布日期: 2011-03-29

Vigor and physiological properties of ultra-drying seeds of Larix principis-rupprechtii Mayr. and L. kaempferi(Lamb.)

1 Research Institute of Forestry, Chinese Academy of Forestry, Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration, Beijing, 100091, P.R. China; 2 Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, 100083, P. R. China; 3 College of Forestry, Shandong Agricultural University, Tai’an, 271018, P.R. China; 4 Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, P.R.China.

摘要

摘要: 采用室温硅胶干燥法，研究了超干处理和加速老化（50 ℃，30 d）对华北落叶松和日本落叶松种子活力和生理特性的影响。对2种落叶松不同含水量种子老化前后的发芽率、发芽势、发芽指数、活力指数、相对电导率、脱氢酶活性和异柠檬酸裂解酶进行测定。结果表明：含水量50~28 g/kg的华北落叶松和含水量48~28 g/kg的日本落叶松种子老化前后均能维持较高的发芽势、发芽率、发芽指数、活力指数和酶活性，说明2种落叶松种子的超干保存是可行的。老化前后，含水量28 g/kg的2种落叶松种子各项指标均最好，表现出很强的抗老化能力，说明该含水量可以作为华北落叶松和日本落叶松种子超干贮藏的可选含水量。
- 华北落叶松 /
- 日本落叶松 /
- 种子 /
- 超干处理 /
- 种子活力
Abstract: Using ultra-drying over silica gel(at room temperature) and accelerated aging(50 ℃, 30 d) methods, we studied the storage behavior of Larix principis-rupprechtii Mayr. and L. kaempferi(Lamb.) Carr. seeds. Seed germination percentage(GP), germination energy(GE), germination index(GI), vigor index(VI), relative conductivity(RC), dehydrogenase activity(DA) and isocitrate lyase activity(ICL) after ultra-drying(pre-aging) and accelerated aging were investigated. The results showed that higher GE, GP, GI, VI, DA and ICL were found in the seeds with moisture content(MC) of 50-28 g/kg for L. principis-rupprechtii and 48-28 g/kg for L. kaempferi before and after aging, indicating the feasibility of ultra-drying storage for seeds of these two species. Furthermore, all indices of seeds with MC of 28 g/kg were best for both species, indicating their better anti-aging ability than seeds with other MCs. The results indicate that 28 g/kg of MC was optimum for the ultra-dying storage of L. principis-rupprechtii and L. kaempfer seeds.
- Larix principis-rupprechtii /
- Larix kaempferi /
- seed /
- ultra-drying /
- seed vigor

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华北落叶松和日本落叶松种子超干保存活力和生理特性研究

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Vigor and physiological properties of ultra-drying seeds of Larix principis-rupprechtii Mayr. and L. kaempferi(Lamb.)

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