• ĐÁNH GIÁ KHẢ NĂNG KÍCH THÍCH SINH TRƯỞNG THỰC VẬT VÀ THÍCH ỨNG VỚI ĐIỀU KIỆN PHÈN CỦA CÁC DÒNG VI KHUẨN VÙNG RỄ TRONG ĐẤT KHÓM Ở TIỀN GIANG

ĐÁNH GIÁ KHẢ NĂNG KÍCH THÍCH SINH TRƯỞNG THỰC VẬT VÀ THÍCH ỨNG VỚI ĐIỀU KIỆN PHÈN CỦA CÁC DÒNG VI KHUẨN VÙNG RỄ TRONG ĐẤT KHÓM Ở TIỀN GIANG

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Số trang của bài
36-45
Bài toàn văn
Chuyên mục
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Tên bài

ĐÁNH GIÁ KHẢ NĂNG KÍCH THÍCH SINH TRƯỞNG THỰC VẬT VÀ THÍCH ỨNG VỚI ĐIỀU KIỆN PHÈN CỦA CÁC DÒNG VI KHUẨN VÙNG RỄ TRONG ĐẤT KHÓM Ở TIỀN GIANG

Tên tác giả
Nguyễn Thị Ngọc Trúc, Lê Minh Trí
Category
Monthly Journal
Title

Evaluation of plant growth promoting and sulphate soil tolerant capacity of PGPR in pineapple soil at Tien Giang province

Author
Abstract

Allumium soil has being increased by climate change. Therefore, the experiment was conducted to find out the useful microorganisms in soil - which can tolerant with the sulphate soil and can fix nitrogen, solubilize phosphate as well as release IAA. The results of experiment shown that: there were 16 clones of PGPR isolated from pineapple cultivated, Tan Lap, Chau Thanh, Tien Giang. Out of them, two soil samples: TL IX and TLX (Tan Lap IX and Tan Lap X) had the highest density of nitrogen fixing and phosphate solubilizing bacteria. The results of soil analysis showed that the contain of Al was 38.7 g/kg, Fe was 24.2 g/kg, Mn was 16.2 g/kg, S was 0.14 g/kg in Tan Lap soil. While Tan Lap water analysis showed that: contain of Al was 1.24 mg/l, Fe was 1.29 mg/l, Pb was 0, Amoni was 0.10 mg/l, NO3 - was 0.12 mg/l, SO4 2- was 94.5 mg/l.The capacity of isolated PGPR tolerant to Fe3(SO4)2 showed that: 7 clones of nitrogen fixing bacteria (clone VSP 1, 2, 3, 4) and 1 clone of IAA releasing bacteria (clone VSP 8) has tolerant to Fe3(SO4)2 with the concentration up to 24.2 g/kg. Similar for the capacity of isolated PGPR tolerant to Al3(SO4)2 showed that: 7 clones of nitrogen fixing bacteria, 4 clones of phosphate solubilizing bacteria (clone VSP 10, 5, 6, 7) and 2 clones of IAA releasing bacteria (clone VSP 8, 9) has tolerant to Al3(SO4)2 with the concentration up to 38.7 g/kg. The identification of isolated PGPR from Tan Lap soil was Enterobacter oryzae (VSP2), Enterobacter oryzae (VSP3), Enterobacter cloacae(VSP4 and VSP8), Pseudomonas stutzeri(VSP10), Pseudomonas stutzeri(VSP 16), Klebsiella pneumoniae(VSP13).

Từ khoá / Keywords

PGPR
Allumium soil
Nitrogen fixing bacteria
phosphate solubilizing bacteria
IAA releasing bacteria.