Volume 8, Issue 33 (vol. 8, no. 33, 2020 2019)
2019, 8(33): 413-430 |
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rafierad Z, golchin A, yahya T, fattahi- moghadam J. Effect of kaolin on yield, water use efficiency and physiological and biochemical responses of Page Mandarin (Citrus reticulate) under moisture stress. Plant Process and Function 2019; 8 (33) :413-430
URL: http://jispp.iut.ac.ir/article-1-1094-en.html
URL: http://jispp.iut.ac.ir/article-1-1094-en.html
1- Department of soil science, college of agriculture, Zanjan University, Zanjan, Iran
2- Department of soil science, college of agriculture, Zanjan University, Zanjan, Iran ,agolchin2011@yahoo.com
3- Department of plant breeding, Horticultural Science Research Institute, Citrus and Subtropical Fruits Research Center of Ramsar, Ramsar, Iran
2- Department of soil science, college of agriculture, Zanjan University, Zanjan, Iran ,
3- Department of plant breeding, Horticultural Science Research Institute, Citrus and Subtropical Fruits Research Center of Ramsar, Ramsar, Iran
Abstract: (2491 Views)
With respect to arid and semi-arid climatic conditions of the country, it is important to apply appropriate management methods in order to increase yield and water use efficiency. For this purpose, the effect of kaolin with three levels (0, 5 and 7 percent) and with three levels of moisture condition (100, 75 and 50 percent of field capacity) on page mandarin as a factorial experiment based on a completely randomized design with three replications was evaluated in 2017 at the Citrus and Subtropical Fruits Research Center of Ramsar. The results showed that under moisture stress, fruit yield, water use efficiency, chlorophyll a and total contents, the relative water content of leaves, leaf water potential, and stomatal conductance were decreased significantly. While kaolin application increased the total soluble solids, fruit yield, and water use efficiency it decreased the proline content, carbohydrates, leaf surface temperature, stomatal conductance, superoxide dismutase activity, and fruit sunburn significantly. Also, in the treatment of 50% of field capacity, 5% Kaolin application, increased fruit yield (91%), chlorophyll a (70), total chlorophyll (52%), leaf relative water content (76%), stomatal conductivity (87%) and leaf water potential (19%) compared to the treatment without applying kaolin. Therefore, kaolin application in summer with severe moisture stress conditions (50% field capacity), are recommended to create a positive effect on the reduction of production of reactive oxygen species resulting from of oxidative stress, reduction of fruit sunburn, the increase of fruit yield and water use efficiency.
Keywords: Fruit sunburn, Leaf surface temperature, Proline, Stomatal conductance, Superoxide dismutase activity
Type of Study: Research |
Subject:
Droughts Stress
Received: 2018/08/22 | Accepted: 2019/01/12 | Published: 2020/05/11
Received: 2018/08/22 | Accepted: 2019/01/12 | Published: 2020/05/11
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