摘要
以种植于多砾石黏壤土、黏壤土、沙土中的澳洲青苹为试材,通过对叶面积、叶厚、净光合速率、色素含量、根系活力、丙二醛(MDA)含量及抗氧化酶活性等指标测定分析,了解其对不同土壤条件的适应性。结果表明,种植于黏壤土和沙土中的澳洲青苹叶面积极显著高于种植于多砾石黏壤土中的,但叶片厚度以多砾石黏壤土最高;在3种土壤条件下,澳洲青苹的根系活力与色素含量相差较小;黏壤土的叶片净光合速率最低;沙土的叶片MDA含量最高;多砾石黏壤土条件下的澳洲青苹叶片抗氧化酶活性较高。综合各项测试指标及对植株长势的观察认为,澳洲青苹对土壤适应性较强,在3种土壤中均可正常生长,但以在多砾石黏壤土中生长最好。
Using ‘Granny Smith＇ grown in clay loam with gravels, clay loam and sandy loam respectively as materials, some indicators such as leaf area and thickness, net photosynthetic rate, root activity, pigment and malondialdehyde （MDA） contents and antioxidant enzyme activity were determined and analyzed to understand the apple adaptability to different soil conditions. The results showed that the leaf area of the apple grown in clay and sandy loam were very significantly larger than that of the apple planted in clay loam with gravels, but the leaf thickness in clay loam with gravels was the greatest in all. Very small difference existed in root activities and pigment contents in three different soil conditions. The highest leaf MDA content was found in the plants in sandy loam and the lowest leaf net photosynthetic rate emerged in the plants in clay loam. The leaf antioxidant enzyme activity in the plants under the soil condition of clay loam with gravels was relatively higher. According to comprehensive analysis of the indexes and observation of the plant growth,‘Granny Smith’ could be considered as a euhivar which could grow well in all the three tested soil conditions, but growth in clay loam with gravels was the best and showed strong adaptability to the soils.
出处
《天津农业科学》
CAS
2017年第2期8-11,共4页
Tianjin Agricultural Sciences
基金
天津市科委2014年基础与前沿技术研究计划资助项目(14JCYBJC30200)
天津市农委农业科技示范推广项目(201101120)
关键词
土壤条件
澳洲青苹
叶片生长
生理及光合特性
soil condition
‘Granny Smith’
leaf growth
physiological and photosynthetic characteristics
