STUDY ON CHANGES IN SOME GROWTH, PHYSIOLOGIAL AND BIOCHEMICAL INDICATORS OF THE KING MANDARIN (Citrus nobilis Lour.) IN SALINITY STRESS IN VITRO

Lương Thị Lệ Thơ; Đỗ Thị Tuyết Hoa; Lưu Tăng Phúc Khang

doi:10.34238/tnu-jst.10841

STUDY ON CHANGES IN SOME GROWTH, PHYSIOLOGIAL AND BIOCHEMICAL INDICATORS OF THE KING MANDARIN (Citrus nobilis Lour.) IN SALINITY STRESS IN VITRO

About this article

Received: 31/07/24 Revised: 17/11/24 Published: 18/11/24

Authors

1. Luong Thi Le Tho, Ho Chi Minh city University of Education
2. Do Thi Tuyet Hoa, Ho Chi Minh city University of Education
3. Luu Tang Phuc Khang , Chiang Mai University

Abstract

Citrus nobilis Lour is a fruit tree known for its high nutritional and economic value. Many nutrients and biologically active natural compounds in King mandarin help improve the body's resistance against diseases. Currently, cultivation in the Southwest provinces, including the cultivation of King mandarin, is suffering great damage due to increasingly complex drought and salinity. In vitro tests were peformed with different NaCl concentrations (0, 1, 3, 5, 7, and 9 g/L) to the effects of salt stress on the King mandarin growth performance. The results show that the presence of NaCl in the culture medium inhibit King Mandarin's growth process. In particular, the culture medium supplemented with NaCl at a concentration of 9 g/L did not produce in vitro seedlings. At NaCl concentrations from 1 g/L to 7 g/L, the physiological indicators (plant height, number of roots, root length, fresh biomass, dry biomass) and photosynthetic intensity of in vitro King mandarin decreased with increasing salt concentration, lower than the control. Contrastly, the higher the salt concentration, the higher the proline content. In additon, ligninization and granular deposits appeared more in the root anatomical structure.

Keywords

King Mandarin; in vitro; Physiological; Biochemical; Salinity stress

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DOI: https://doi.org/10.34238/tnu-jst.10841

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