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Physiological Responses of Different Peach Rootstocks to Salt Stress and  Their Salt Tolerance Evaluation(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2016年12
Page:
1-6
Research Field:
Publishing date:

Info

Title:
Physiological Responses of Different Peach Rootstocks to Salt Stress and  Their Salt Tolerance Evaluation
Author(s):
YU Wanwen1; 2; CAI Jinfeng1; GAO Changzhong2
(1.Co-innovation Center for Sustainable Forestry in Southern China,Nanjing Forestry University,Nanjing,Jiangsu 210037;2.Yancheng Hongduo Strawberry Professional Cooperation,Yancheng,Jiangsu 224000)
Keywords:
peach rootstocks; salt stress; physiological response; diversity; salt tolerance
PACS:
-
DOI:
10.11937/bfyy.201612001
Abstract:
The experiment was conducted with one-year-old grafted seedlings of 3 tree species fitting for peach rootstock.The physiological responses of 3 tree species to salt stress were studied and their salt tolerances were evaluated.The results were as follows:their salt symptoms aggravated gradually with salt levels increasing and treatment time extension,and showed the physiological responses included plasma membrane permeability and Na+ content increasing. Amygdalus mongolica had strong abilities of osmotic adjustment,ion balance,antioxidant,so that it could well control Na+ entering leaf,and maintain plasma membrane integrity and stability.Based on the above, Amygdalus mongolica showed strong salt tolerance.But those of Cerasus tomentosa were contrary to Amygdalus mongolica ,and showed inferior salt tolerance;salt tolerance of Prunus persica was between Cerasus tomentosa and Amygdalus mongolica .Subordinative function values were calculated based on the following indexes:plasma membrane permeability,the contents of soluble sugar and free proline,SOD and POD activity,and the contents of Na+ and K+ in leaf.The 8 kinds of peach rootstock germplasms were comprehensively evaluated and their order of salt tolerance from strong to weak was Amygdalus mongolica , Prunus davidiana , Prunus amygdalus × Prunus persica (GF677), Prunus persica , Amygdalus kansuensis , Prunus davidiana var. potaninii Rehd, Pnmus persica ‘ tsuku-h-5 ’ , Cerasus tomentosa .The above results provided salt resistance evaluation indexes of peach rootstock germplasms,and did the salt resistance germplasm resources for breeding hybrid and planting peach tree in coastal tidal flats.

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Last Update: 2016-07-15