| This article has been：browse 4872times Download 1786times |
Scan the code！ |
|
|
| 土壤水分含量和接种摩西斗管囊霉(Funneliformis mosseae)对伯乐树幼苗生长的影响 |
|
王丹丹1,2,3, 魏 蓉1,4, 张 薇1, 林明琛1,2, 陈红锋1*
|
|
1. 中国科学院华南植物园,中国科学院植物资源保护与可持续利用重点实验室, 广州 510650;2. 中国科学院大学,
北京 100049;3. 广东省应用植物学重点实验室, 广州 510650;4. 广州普邦园林股份有限公司, 广州 510627
|
|
| 摘要: |
| 该研究测定了伯乐树在不同水分处理(40%、60%、80%、100%)和时间节点下的菌根侵染率,不同水分处理前后接种组和对照组幼苗株高、地径、叶片数等形态指标以及叶片丙二醛含量、幼苗成活率指标。结果表明:(1)相对含水量60%条件下,菌丝、丛枝和总的侵染率最高,40%低水分含量和80%以上高水分含量都不利于菌根真菌对幼苗的侵染。(2)在40%和60%低水分量含量条件下,接种幼苗的丙二醛含量显著低于对照,接种摩西斗管囊霉可提高幼苗对干旱胁迫的抗耐性,但80%和100%高水分含量条件下接种对幼苗的作用不明显。(3)幼苗在自然和接种条件下适宜生长的土壤相对含水量为80%和60%。(4)相同水分条件下,接种幼苗成活率高于对照,其中相对含水量60%下接种幼苗的成活率最高(90%),在40%低水分含量或100%饱和水分含量下,幼苗的成活率都相对较低。 |
| 关键词: 摩西斗管囊霉, 水分胁迫, 伯乐树, 成活率 |
| DOI：10.11931/guihaia.gxzw201804016 |
| 分类号:Q943.1 |
| 文章编号:1000-3142(2019)07-0976-10 |
| Fund project:国家自然科学基金(31570337)[Supported by the National Natural Science Foundation of China(31570337)] 。 |
|
| Effect of soil water content and inoculation with Funneliformis mosseae on growth of Bretschneidera sinensis seedlings |
|
WANG Dandan1,2,3, WEI Rong1,4, ZHANG Wei1, LIN Mingchen1,2, CHEN Hongfeng1*
|
|
1. South China Botanical Garden, Chinese Academy of Sciences, Key Laboratory of Plant Resources Conservation and Sustainable Utilization,
Guangzhou 510650, China;2. University of Chinese Academy of Sciences, Beijing 100049, China;3. Guangdong Provincial Key Laboratory
of Applied Botany, Guangzhou 510650, China;4. Guangzhou Pubang Garden Co., Ltd., Guangzhou 510627, China
|
| Abstract: |
| In this paper, the mycorrhizal infection rates of Bretschneidera sinensis under different water treatments(40%, 60%, 80%, 100%)and time points were determined. Quantified morphological characteristics of the seedlings such as height, ground diameter, and number of leaves, together with malonaldehyde content and survival rate in the inoculation group and the control group before and after different water treatments were also determined. The results were as follows:(1)Under the condition of relative soil moisture content of 60%, the infection rates of mycelium, arbuscula and the total were the highest, low moisture content(40%)and high moisture content(≥80%)were not conducive to mycorrhizal fungi on the seedlings infestation.(2)The content of malondialdehyde in the inoculated seedlings was significantly lower than that of the control at 40% and 60% treatments, which suggested that inoculation with Funneliformis mosseae could increase seedling resistance to drought stress, but with no obvious effect on treatments of 80% and 100% high moisture content.(3)The relative water content of soil suitable for seedling growth under natural and inoculated conditions was 80% and 60%, respectively.(4)Under the same water conditions, the survival rate of inoculated seedlings was higher than that of the control, with the highest(90%)under 60% treatment, while the survival rate of seedlings was relatively low at 40% low moisture content and 100% saturated moisture content. |
| Key words: Funneliformis mosseae, water stress, Bretschneidera sinensis, survival rate |
