Dongxia Wang ^1,2 , Dong Cao ³ , Jinmin Wang ^1,2 , Zongren Li ^1,2

1 College of Agriculture and Animal Husbandry, Qinghai University, Xining, 810006, P.R. China
2 State key Laboratory of Sanjiangyuan Ecology and Plateau Agriculture and Animal Husbandry, Qinghai university, Xining, 810006, P.R. China
3 Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, 810008, P.R. China
Author    Correspondence author
Field Crop, 2022, Vol. 5, No. 4   
Received: 18 Nov., 2022    Accepted: 23 Nov., 2022    Published: 26 Nov., 2022

This article was first published in Molecular Plant Breeding in Chinese, and here was authorized to translate and publish the paper in English under the terms of Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

In the study, the hormones level of potato (Solanum tuberosum L.) plantlet were measured under treatment of 100 mmol/L NaCl and different processing time (1 d, 9 d, 15 d and 22 d). This provides the reference for the salt resistant mechanism and selecting salt resistant varieties. The results show that: Z, ZR, Z+ZR, IAA, IAA/(Z+ZR) and ACC content of leaf were decreased under 100 mmol/L NaCl treatment, while the Z/ZR and ABA content were increased at the same conditions. The root endogenous hormone ratio of Z/ZR, IAA/(Z+ZR) and Z, IAA and ABA content were increased under 100 mmol/L NaCl treatment. In contrast, the ZR and Z+ZR content were decreased. Compared with control, the ratio of hormones at plantlet root and leaf were changing under 100 mmol/L NaCl treatment, the ratio of Z_Root/Z_Leaf, (Z+ZR)_Root/(Z+ZR)_Leaf, IAA_Root/IAA_Leaf, ABA_Root/ ABA_Leaf and ACC_Root/ ACC_Leaf were all increased, and the ZR_Root/ ZR_Leaf was decreased. The above results suggested the growth of potato plantlet was significantly inhibited under NaCl stress, the endogenous hormones levels and distribution of leaf and roots with significant changes with the stress time to adapt the salt stress environment effectively and keep it normal growth.

NaCl stress, Potato plantlet; Hormones level