摘要
大豆是世界上最重要的油料作物之一,是蛋白质的重要来源,磷对大豆产量和品质有很大影响。我国大约有2/3的耕地属于缺磷状态,土壤中全磷含量较高但有效磷含量较低。根系是大豆吸收土壤磷的主要器官,低磷胁迫时,大豆主要通过改变根系形态结构、增强根系生理活动和根系菌根共生以提高对磷亏缺环境的适应能力。本文在综述以往研究进展的同时,针对以往研究中多注重根形态构型、根系生理反应、根系菌根共生在磷亏缺适应中的作用的特点,提出在以后研究中不能仅研究其中一种策略,应加强不同适应策略之间的协调和权衡机制及其在大豆的磷亏缺适应中作用的研究。
Soybean is one of the most important grain crops in the world and an important source of protein. It is generally believed that the high yield and quality of soybean require high available phosphorus. About two-thirds of cultivated land in China is in a state of phosphorus deficiency. Research shows that the total phosphorus content in the soil is high but the available phosphorus content that can be effectively used by soybean is low. The root system is the main organ for soybean to absorb soil phosphorus. Under low phosphorus stress, soybean can improve the adaptability to phosphorus deficiency environment by changing root morphology and enhancing root physiological activity and root mycorrhizal symbiosis. This paper reviewed the previous research progress on adaptation strategies of soybean under low phosphorus conditions. Previous research had the characteristics of only focusing on one of the three adaptation strategies, either the root morphology, the root physiological response or the role of root mycorrhizal symbiosis. The paper suggested that, in the future, research should not just focus on one of these strategies but should strengthen the coordination and trade-off relationship between different adaptation strategies and their role in the adaptation of phosphorus deficiency.
作者
杨明号
何进
刘鸿雁
YANG Ming-hao;HE Jin;LIU Hong-yan(College of agriculture, Guizhou University, Guiyang, Guizhou 550025, China)
出处
《山地农业生物学报》
2019年第1期68-73,共6页
Journal of Mountain Agriculture and Biology
基金
贵州省科学基金项目(201808)
关键词
大豆
根系形态
根际活化
菌根共生
权衡关系
soybean
root morphology
rhizosphere activation
mycorrhizal symbiosis
trade-off relationship
