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Acta Horticulturae Sinica ›› 2025, Vol. 52 ›› Issue (3): 693-704.doi: 10.16420/j.issn.0513-353x.2024-0021

• Cultivation·Physiology & Biochemistry • Previous Articles     Next Articles

Physiological Response of Shine Muscat Grape Seedlings Grafted with Different Rootstocks to Combined Stress of Salt and Low Temperature

XING Zhigan1, LEI Xiangzhao1, WANG Haochen1, FENG Mingxin1, LI Jingwen1, LIU Yujia1, FANG Yulin1, MENG Jiangfei1,2,*()   

  1. 1 College of Enology,Northwest A & F University,Yangling,Shaanxi 712100,China
    2 Shaanxi Engineering Research for Viti-Viniculture,Yangling,Shaanxi 712100,China
  • Received:2024-10-15 Revised:2025-01-14 Online:2025-03-25 Published:2025-03-25
  • Contact: MENG Jiangfei

Abstract:

‘Shine Muscat’grape was grafted onto‘5BB’‘Kangzhen 3’‘SO4’and‘101-14’rootstocks to investigate their tolerance. The results showed that the grafted seedlings could reduce the content of MDA and relative electrical conductivity,increase the content of osmoregulatory substances(including proline,soluble sugars,and soluble proteins),and improve the antioxidant enzymes activity and photosynthetic capacity at varying degrees under salt stress compared to self rooted seedlings,among them,‘Shine Muscat/SO4’showed the best tolerance to salt stress. In addition,under low temperature stress,the changes in various physiological and biochemical indicators of grafted and self rooted seedlings are similar to those under salt stress,but the amount and degree of change was different obviously.‘Shine Muscat/5BB’exhibit stronger low temperature tolerance. Under combined stress of salt and low temperature,the MDA content of‘Shine Muscat/SO4’was significantly lower than that of other rootstock grafted seedlings and showed the least damage symptoms,while the content of soluble proteins,total soluble sugars and free proline was significantly higher than that of individual salt and low temperature stress treatment,the same as the stimulative activities of CAT and POD. Overall,comprehensive comparative analysis indicated the‘Shine Muscat’grafted onto‘SO4’has the strongest resistance to the combined salt and low temperature stress,and is most suitable for further promotion and utilization,while ‘5BB’is more suitable for improving the cold resistance of grapevines.

Key words: grape, rootstock, salt, low temperature, resistance, physiological response