| 摘要: |
| [目的]初步探讨不同品种大蒜地上部分水浸液处理,对番茄种子发芽和幼苗生长的化感效应及其机理.[方法]将G84、G07、G89、G08、G09、G88、G64、G93、G57和G73等10个大蒜品种的水浸提液分别配成0.005,0.01和0.02 g/mL 3个质量浓度,以番茄为受体,采用种子发芽生物测试法,测定受体的胚根长和鲜重、苗高和鲜重、SOD和POD活性及MDA含量.[结果]在大蒜浸提液质量浓度为0.005 g/mL时,G93使番茄胚根重显著增加,与对照差异显著,G89、G08显著增加番茄苗高和鲜重;在大蒜浸提液质量浓度为0.01 g/mL时,G84、G07、G09、G88、G93、G73显著促进番茄苗高生长,G84、G89显著抑制番茄胚根伸长,其化感效应指数分别为-0.310和-0.255;在大蒜浸提液质量浓度为0.02 g/mL时,G64对番茄幼苗生长的抑制效应最强.在大蒜浸提液质量浓度为0.01 g/mL时,G07、G89、G08和G57处理番茄的SOD和POD活性及MDA含量均与对照差异显著.[结论]同一大蒜品种秸秆浸提液的不同质量浓度,及同一质量浓度秸秆浸提液的不同大蒜品种,均对番茄有显著的化感效应,且品种与浓度间有明显互作关系;随着大蒜浸提液质量浓度的提高,多数大蒜品种对番茄幼苗生物量表现低浓度增加、高浓度降低的现象,其中以大蒜品种G64的秸秆浸提液效应最为显著,其次为G84. |
| 关键词: 大蒜品种 秸秆水浸液 化感效应 番茄 |
| DOI： |
| 分类号: |
| 基金项目:国家“十一五”科技支撑计划项目（2006BAD07B02）；西安市科技攻关计划项目（YF07086） |
|
| Allelopathy of straw aqueous extracts of different garlic varieties on tomato (Lycopersicon esculentum) |
|
|
| Abstract: |
| 【Objective】 A primary study was conducted on allelopathy to explore its mechanism of straw aqueous extracts of different garlic varieties on seed germination and seedling growth of tomato. 【Method】 The straw aqueous extracts of ten garlic varieties G84,G07,G89,G08,G09,G88,G64,G93,G57 and G73 were prepared in three concentrations of 0.005,0.01 and 0.02 g/mL.Seed germination bioassay method was employed with tomato as the testing material.For testing plant tomato,the length and fresh weight of roots,height and fresh weight of seedling,indexes of SOD and POD activities and the content of MDA were measured.【Result】 The results indicated that at the concentration of 0.005 g/mL,G93 had striking effects on root weight compared with the control group while G89 and G08 increased the growth of height and fresh weight of tomato seedlings.At the concentration of 0.01 g/mL,tomato seedling height was accelerated remarkably by the varieties of G84,G07,G09,G88,G93 and G73 while tomato root length was significantly reduced by the varieties of G84 and G89,with their RIs at -0.310 and -0.255,respectively.At the concentration of 0.02 g/mL,G64 manifested the strongest inhibition effect on tomato seedling growth.The varieties of G07,G89,G08 and G57 had significant difference in the control in all indexes of the SOD and POD activities and the content of MDA at the concentration of 0.01 g/mL. 【Conclusion】 There were significant differences among different concentrations of straw aqueous extracts of the same garlic variety,and among different garlic varieties at the same concentration of straw aqueous extracts, and significant co-effect between the factors of varieties and concentration.Along with the enhancement of garlic straw aqueous extract concentrations,most garlic varieties presented promotion effect on tomato seedling growth at low concentration and suppression effect at high concentration.Among those varieties,G64 showed the most remarkable effect and G84 ranked next. |
| Key words: garlic varieties straw aqueous extracts allelopathy tomato |
