Efficiency of five isolated silicate solubilizing bacteria on germination rate, growth and biomass of rice under the condition supplemented with and without NaCl

Tran Vo Hai Duong * , Dao Thi The and Nguyen Khoi Nghia

* Corresponding author (tvhduong@nomail.com)

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Received: 21 May 2018
Revised: 13 Jun 2018
Accepted: 03 Aug 2018
Published: 03 Aug 2018
Title: Efficiency of five isolated silicate solubilizing bacteria on germination rate, growth and biomass of rice under the condition supplemented with and without NaCl
DOI: 10.22144/ctu.jsi.2018.086
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Đường, T. V. H., The, Đ. T., & Nghĩa, N. K. (2018). Efficiency of five isolated silicate solubilizing bacteria on germination rate, growth and biomass of rice under the condition supplemented with and without NaCl. CTU Journal of Science, 54(CĐ Nông nghiệp), 227-234. https://doi.org/10.22144/ctu.jsi.2018.086
Issue
Vol. 54 No. Special issue on Agriculture (2018)
Section
Biotechnology

Abstract

The objective of this study was to evaluate the efficiency of five isolated silicate solubilizing bacteria on germination rate, growth and biomass of rice under the condition supplemented with and without NaCl. The five highly isolated silicate solubilizing bacteria including Ochrobactrum ciceri TCM_39 (TCM_39), Microbacterium neimengense MCM_15 (MCM_15), Klebsiella aerogenes LCT_01 (LCT_01), Olivibacter jilunii PTST_30 (PTST_30) and Citrobacter freundii RTTV_12 (RTTV_12) were tested with rice cultivar IR50404 in Hoagland medium. The results showed that two bacterial strains, LCT_01 and RTTV_12 supported to have a higher rate of germination of rice seeds with 94.7% and 92.0%, respectively as compared to that of the control treatment. Besides, in the experimental set with Hoagland medium containing no NaCl and 0.3% NaCl, the treatments with TCM_39 and PTST_30 obtained the highest total of rice dry biomass of 13.4 mg and 13.8 mg as compared to that of the control treatment.
Keywords: IR50404 rice variety, NaCl, salinity tolerance, silicate solubilizing bacteria, soluble silicon

Tóm tắt

Mục tiêu của nghiên cứu nhằm đánh giá hiệu quả của 5 dòng vi khuẩn hòa tan khoáng silic (Si) lên nảy mầm và sinh trưởng lúa ở điều kiện có và không có NaCl. Năm dòng vi khuẩn hòa tan khoáng silic gồm: Ochrobactrum ciceri TCM_39 (TCM_39), Microbacterium neimengense MCM_15 (MCM_15), Klebsiella aerogenes LCT_01 (LCT_01), Olivibacter jilunii PTST_30 (PTST_30) và Citrobacter freundii RTTV_12 (RTTV_12) được thử nghiệm với giống lúa IR50404 trong môi trường Hoagland. Kết quả cho thấy hai dòng vi khuẩn LCT_01 và RTTV_12 giúp tăng tỉ lệ này mầm, lần lượt đạt 94,7% và 92,0 %, cao hơn và khác biệt thống kê so với đối chứng. Ngoài ra, ở điều kiện không và có bổ sung 0,3% NaCl hai dòng TCM_39 và PTST_30 lần lượt cho tổng sinh khối lớn nhất đạt 13,4 mg  và 13,8 mg so với nghiệm thức đối chứng.
Từ khóa: Chịu mặn, giống lúa IR50404, NaCl, silic hòa tan, vi khuẩn hòa tan khoáng silic

Article Details

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