Biotechnology Bulletin ›› 2023, Vol. 39 ›› Issue (8): 185-193.doi: 10.13560/j.cnki.biotech.bull.1985.2023-0003

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Salt Tolerance at Seedling Stage and Analysis of Selenium and Folic Acid Content in Seeds in Two Sets of Wheat-Dasypyrum villosum Chromosom Additional Lines

HAN Zhi-yang1,2,3(), JIA Zi-miao2, LIANG Qiu-ju4, WANG Ke2, TANG Hua-li2(), YE Xing-guo2, ZHANG Shuang-xi3()   

  1. 1. School of Agriculture Ningxia University, Yinchuan 750021
    2. Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081
    3. Crop Research Institute, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750101
    4. Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081
  • Received:2023-01-05 Online:2023-08-26 Published:2023-09-05
  • Contact: TANG Hua-li, ZHANG Shuang-xi E-mail:hzy1787324918@163.com;tanghuali@caas.cn;shxzhang@163.com

Abstract:

Dasypyrum villosum as a related species of wheat has many excellent genes, and it is an ideal material to improve the salt tolerance and nutritional quality of wheat. In this study, wheat-D. villosum #2 and wheat-D. villosum #3 disomic addition lines were applied for the identification of salt tolerance and determination of selenium and folic acid contents in seeds. It was found that the germination rates of the two sets of additional lines under salt stress were 16.67%-43.33% and 26.67%-70.00%, respectively, which were higher than the control Chinese Spring(CS)(6.65%). The germination rates of the addition lines DA3V#3, DA7V#3, DA2V#3 and DA5V#2 under salt stress were 70.00%, 56.67%, 53.33% and 43.33%, respectively. The additional lines grew normally under salt stress, and the plant height and root length of the additional lines under salt stress were higher than those of the control CS, among which the plant height of DA4V#2 and DA2V#3 reached 15.2 cm and 16.1 cm, respectively, and the root length of DA2V#3 was 3.4 cm. The highest grain selenium content was tested in the addition line DA2V#2(8.47 μg/g)and DA2V#3(7.60 μg/g)containing chromosome 2V in the 14 addition lines. The folic acid content in the seeds of wheat-D. villosum additional lines #2 and #3 was 9.00-26.10 μg/100 g, among which most of the addition lines folic acid content were higher than the control(10.98 μg/100 g). The difference between DA4V#2 or DA6V#2 and the CS was extremely significant in folic acid content, and the folic acid content in DA 6V#2 was 2.4-fold higher than that in CS. The results inferred that there might be salt tolerance related genes on chromosomes 2V#3, 3V#3, and 5V#2, grain selenium enrichment related genes on chromosome 2V, and grain folic acid biosynthesis related genes on chromosome 6V#2.

Key words: wheat-Dasypyrum villosum additional lines, salt tolerance, selenium content, folic acid content