Nguyễn Văn Bo * , Nguyễn Bảo Vệ , Nguyễn Thanh Tường Ngô Ngọc Hưng

* Tác giả liên hệNguyễn Văn Bo

Abstract

This study was conducted in green house to determine the effect of calcium form on proline accumulation and rice growth under saline irrigation condition. There were 5 treatments arranged in randomized completely design with 3 replications. The results showed that supplemental calcium increased proline accumulation in rice, in which CaSO4 form was the highest effect. The use of Ca(NO3)2 and CaSOforms have improved plant height of rice. Panicle length were also improved by CaSO4. Ca(NO3)2 was recorded to enhance percentage of filled grains, 1000-grain weight and grain yield under           salt stress.
Keywords: proline accumulation, calcium forms, salt tolerance, rice growth

Tóm tắt

Thí nghiệm được thực hiện trong nhà lưới để xác định ảnh hưởng của dạng calcium bổ sung lên sự tích lũy proline và sinh trưởng của cây lúa dưới điều kiện tưới mặn. Thí nghiệm được bố trí theo thể thức hoàn toàn ngẫu nhiên gồm 5 nghiệm thức và 3 lần lặp lại. Kết quả cho thấy, bổ sung calcium gia tăng sự tích lũy proline trong cây lúa, trong đó dạng CaSO4 có hiệu quả cao nhất. Sử dụng calcium dạng CaSO4 và Ca(NO3)2 đã cải thiện chiều cao cây lúa khi so với tưới mặn không bón calcium. Dạng Ca(NO3)2 bổ sung được ghi nhận đã làm tăng phần trăm hạt chắc, trọng lượng 1.000 hạt và năng suất hạt trong điều kiện khủng hoảng mặn.
Từ khóa: đất nhiễm mặn, sự tích lũy proline, dạng canxi, tính chịu mặn, sinh trưởng của lúa

Article Details

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