|Table of Contents|

Effects of Foliar Spraying Calcium on Growth and Physiological Characteristics of Rape Seedlings Under Alkali Stress

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2023年01
Page:
11-19
Research Field:
Publishing date:

Info

Title:
Effects of Foliar Spraying Calcium on Growth and Physiological Characteristics of Rape Seedlings Under Alkali Stress
Author(s):
CAO Xiaoqiang; ZHAO Jiang; ZHOU Bohan; SUN Lupeng; ZHANG Fenghua
(College of Agriculture，Shihezi University,Shihezi,Xinjiang 832003)
Keywords:
NaHCO3 stress; rape seedlings; exogenous CaCl2; physiological characteristics
PACS:
-
DOI:
10.11937/bfyy.20222040
Abstract:
A pot experiment was conducted with ‘Huayouza 62 (salt-tolerant)’ and ‘Xiangyou 15 (salt-sensitive)’ as the test material.The effects of folior spraying CaCl2 with different concentrations on the growth and physiological characteristics of rape seedlings under 100 mmol?L-1 NaHCO3 stress were investigated，in order to provide reference for rape cultivation in saline-alkali land.The results showed that when the calcium concentration was 1.0% and 0.5%,the corresponding fresh weight of stems and leaves of ‘Huayouza 62’ and ‘Xiangyou 15’ were increased significantly (P<0.05),which were 117.58% and 88.89% compared with NaHCO3 stress.When the calcium concentration was 2.0%,the potential photochemical efficiency (Fv/Fo) of leaves of ‘Huayouza 62’ was significantly increased (P<0.05),which was increased by 35.58% compared with NaHCO3 stress.When the calcium concentration was 1.0%,the Fv/Fo of ‘Xiangyou 15’ was increased most obviously,which was increased by 19.60% compared with NaHCO3 stress.When calcium concentration was 0.5%,K+/Na+ in stems and leaves tissues of ‘Xiangyou 15’ was significantly increased (P<0.05),which was increased by 58.76% compared with NaHCO3 stress.When calcium concentration was 1.0%,K+/Na+ of ‘Huayouza 62’ was significantly increased (P<0.05),which was increased by 7.12% compared with NaHCO3 stress.When the calcium concentration was 0.5%,the SOD activity in leaves of ‘Xiangyou 15’ was significantly increased (P<0.05),which was increased by 66.21% compared with NaHCO3 stress.When the calcium concentration was 1.0%,the SOD activity in leaves of ‘Huayouza 62’ was significantly increased (P<0.05),which was increased by 19.36% compared with NaHCO3 stress.In conclusion,the suitable concentration of CaCl2 was sprayed on the leaves,it could significantly promote the growth of different salt-tolerant rape seedlings under NaHCO3 stress,and improve their stress resistance.The appropriate CaCl2 concentration range was 0.5%-1.0%.

References:

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Last Update: 2023-01-28