Vũ Ngọc Thắng * , Lê Thị Tuyết Châm , Nguyễn Ngọc Quất , Trần Anh Tuấn Nguyễn Ngọc Lãm

* Tác giả liên hệ (vungocthang@vnua.edu.vn)

Abstract

Experiments were conducted to evaluate effects of salinity on germination, growth, physiology and yield of two groundnut varieties of L14 and L27. Results showed that the increase of salinity concentrations decreased significantly germination, root length and shoot length of seedlings, fresh weight of root and shoot. Increasing salinity significantly decreased the growth parameters such as plant height, leaf area, dry weight, and number of nodules. In addition, salinity also reduced SPAD values, chlorophyll fluorescence efficiency, yield components and yield. Furthermore, increasing salinity significantly increased the water saturation deficit, relative ion leakage of two groundnut varieties.
Keywords: Germination, groundnut (Arachis hypogaea L.), growth, physiology, salinity, two L14 and L27 groundnut varieties, yield

Tóm tắt

Thí nghiệm được tiến hành nhằm đánh giá ảnh hưởng của mặn đến khả năng nảy mầm, sinh trưởng, sinh lý và năng suất của 2 giống lạc L14 và L27. Kết quả thí nghiệm cho thấy khi tăng độ mặn đã làm giảm tỷ lệ nảy mầm, chiều dài mầm, rễ mầm, khối lượng tươi của cây mầm và rễ mầm. Bên cạnh đó, khi tăng độ mặn đã làm giảm chiều cao thân chính, diện tích lá, khả năng tích lũy chất khô, khả năng hình thành nốt sần. Ngoài ra, gây mặn còn làm giảm chỉ số SPAD, hiệu suất huỳnh quang diệp lục, năng suất và yếu tố cấu thành năng suất. Đặc biệt, độ thiếu hụt bão hòa nước, độ rò rỉ ion có xu hướng tăng cao khi tăng độ mặn trên cả 2 giống lạc tham gia thí nghiệm.
Từ khóa: Hai giống lạc L14 và L27, lạc (Arachis hypogaea L.), mặn, nảy mầm, năng suất, sinh trưởng, sinh lý

Article Details

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