|Table of Contents|

Influences of intercropping Paspalum notatum on the olives rhizosphere microenvironment and drought resistant physiology* (PDF)

Chinese Journal of Applied & Environmental Biology[ISSN:1006-687X/CN:51-1482/Q]

2016 03
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Influences of intercropping Paspalum notatum on the olives rhizosphere microenvironment and drought resistant physiology*
YANG Hongwei12 LI Zilong13 LIANG Shukun4 JIAO Jian5 & LI Chaozhou12**
1College of Life Science and Technology, Gansu Agricultural University,?Lanzhou 730070, China 2Gansu?Key Laboratory of Crop Genetics & Germplasm Enhancement, Lanzhou 730070, China 3Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China 4Linyi University, Linyi 276005, China 5College of Forestry Science, Gansu Agricultural University,?Lanzhou 730070, China
This study aimed to investigate the influences of intercropping Paspalum notatum on the olive rhizosphere microenvironment and drought resistant physiology. Ten-year-old olive plants were used as experimental materials to measure the indexes of rhizospher

This study aimed to investigate the influences of intercropping Paspalum notatum on the olive rhizosphere microenvironment and drought resistant physiology. Ten-year-old olive plants were used as experimental materials to measure the indexes of rhizosphere microenvironment and drought resistant physiology, including the physical and chemical characteristics of the rhizosphere soil, the soil enzymes activities and the olive leaves’ resistant physiology. The results showed that with intensified drought stress, the membrane stability index (MSI) of olive leaves decreased, while superoxide anion production rate and the contents of MDA and H2O2 increased, indicating drought stress as the cause of the oxidative stress and injuries of olive leaves. The intercropping of P. notatum alleviated the increase of superoxide anion production rate and the contents of MDA and H2O2, therefore helped to increase MSI. It also promoted the contents of soluble sugar, proline, Vc and GSH contents and the activities of SOD, POD and CAT, meanwhile improved the soil fertility related enzymes activities, the organic matter content and the root activity of olive. MSI, proline, CAT, soil invertase and root activities increased significantly under water -2 treatments, compared with non-intercropping P.notstum, by 20.2%, 14.9%, 24.3%, 177.9% and 15.9%, respectively. In summary, intercropping P. notatum improves the soil microenvironment and enhances the antioxidant abilities of olive, thus promotes the drought resistance of olive plants.


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