|Table of Contents|

Effects of Hydrogel and Polyglutamic Acid on the Growth of Sweet Cherry Rootstock ‘Gisela 6’

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2026年4
Page:
35-42
Research Field:
Publishing date:

Info

Title:
Effects of Hydrogel and Polyglutamic Acid on the Growth of Sweet Cherry Rootstock ‘Gisela 6’
Author(s):
LI Huanyong1; LIAO Fangzhou1; WANG Fei1; TONG Yana1; LI Zheng2; YANG Lifang1
(1.Institute of Forestry and Pomolog,Tianjin Academy of Agricultural Sciences，Tianjin 300384；2.School of Textile Science and Engineering,Tiangong University，Tianjin 300387)
Keywords:
sweet cherry rootstock; hydrogel; polyglutamic acid; growth
PACS:
S662.5
DOI:
10.11937/bfyy.20252431
Abstract:
Taking tissue culture seedlings of the sweet cherry rootstock ‘Gisela 6’ (G6) as the experimental materials，a pot experiment was conducted to investigate the effects of applying different levels of hydrogel (CMC with application rates of 0，15，30 mL·pot-1 and 45 mL·pot-1) and polyglutamic acid (γ-PGA with application rates of 0，15，30 mL·pot-1 and 45 mL·pot-1) on seedling growth parameters，photosynthetic traits，root development，and nutrient element contents in plants，in order to provide reference for reducing fertilizer input and improving efficiency in sweet cherry production.The results showed that CMC significantly promoted the growth of plant height，stem diameter，and root system of G6.The growth increments of plant height and stem diameter in the 45 mL·pot-1 CMC treatment were 1.85 times and 2.0 times that of the control，respectively.There was no significant difference in growth indicators among different γ-PGA treatments，but the 15 mL·pot-1 treatment had the best synergistic effect with CMC.CMC and γ-PGA significantly affected the contents of nutrients in the substrate and plants.When 15 mL of CMC was applied，the organic matter in the substrate reached 31.99%，while 45 mL·pot-1 CMC significantly increased the total nitrogen content in leaves and roots.When 45 mL·pot-1 γ-PGA was applied，the total nitrogen and potassium contents in leaves reached the maximum，but the phosphorus content in leaves decreased with the increase of γ-PGA.CMC and γ-PGA improved the ability of G6 leaves to absorb light intensity.The net photosynthetic rate was the highest when 45 mL·pot-1 CMC was applied，while 15 mL·pot-1 γ-PGA resulted in the highest maximum photochemical efficiency and electron transport efficiency of photosystem Ⅱ.In conclusion，CMC and γ-PGA can promote the growth and improve the physiological activity of G6 by improving the nutrient level of the substrate，among which the combination of 45 mL·pot-1 CMC and 15 mL·pot-1 γ-PGA has the most significant promoting effect on G6 growth.

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Last Update: 2026-03-12