|Table of Contents|

Effect of Different Spraying Frequency of Exogenous γ-aminobutyric Acid on Melon Seedlings Growth Under Ca(NO3)2 Stress(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2015年23
Page:
6-10
Research Field:
Publishing date:

Info

Title:
Effect of Different Spraying Frequency of Exogenous γ-aminobutyric Acid on Melon Seedlings Growth Under Ca(NO3)2 Stress
Author(s):
REN Wenqi; PAN Xiongbo; XIANG Lixia; YU Yongpeng; HU Xiaohui
（College of Horticulture，Northwest Agricultural and Forestry University，Yangling，Shaanxi 712100）
Keywords:
Ca(NO3)2 stress; γ-aminobutyric acid; spraying frequency; melon seedling; growth
PACS:
-
DOI:
10.11937/bfyy.201523002
Abstract:
Two melon cultivars ‘Jinhui No.1’ (salt-tolerant) and ‘Yipin Tianxia 208’ (salt-sensitive) were used as experiment materials，using specific melon nutrient of Yamazaki cultivation methods，the effect of different spraying frequency(daily，every two days，every three days) of exogenous γ-aminobutyric acid(GABA 50 mmol/L) on growth，total soluble sugar and proline content (Pro) of melon seedling under Ca(NO3)2 (80 mmol/L) stress were studied.The results showed that Ca(NO3)2 stress significantly reduced the plant height，stem diameter，fresh and dry weight，root fresh and dry weight，total soluble sugar content in melon leaves and roots，and increased Pro content，which indicated that the growth of melon seedlings was severely suppressed under Ca(NO3)2 stress.Under Ca(NO3)2 stress，spraying exogenous GABA could increase plant height，stem diameter，fresh and dry weight of shoot and root and total soluble sugar content and decreased leaves and root Pro content.When the GABA spraying frequency was daily，every two days，every three days，there was a certain role relief of the melon seedling growth under Ca(NO3)2 stress，and the every two days was the best effect.Meanwhile，exogenous GABA spraying had better effect on salt-sensitive species ‘Yipin Tianxia 208’.These results indicated that spraying every two days of 50 mmol/L GABA was beneficial to improve the Ca(NO3)2 stress resistance of melon seedlings and salt-sensitive species ‘Yipin Tianxia 208’ was mitigated better.

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Last Update: 2016-01-11