Bui Thi Cam Huong * , Le Phuc Tan , Huynh Dang Khoa , Tran Tuong Dang , Luu Thai Danh and Le Vinh Thuc

* Corresponding author (btchuong@ctu.edu.vn)

Abstract

The experiment was conducted in Binh Thuy District, Can Tho City to study the effects of phenylalanine, salicylic acid (SA), iron sulfate, zinc sulfate and borax on the growth and yield of Curcuma xanthorrhiza Roxb. turmeric in 2017-2018. The experiment was arranged in a randomized complete block design with 6 levels of plant growth regulators and micronutrients spraying (control, foliar spray of growth regulators Phe 100 ppm, SA 100 ppm, foliar spray of FeSO4 0.5%, ZnSO4 0.5% and borax 0.5% at 120 days after planting (DAP), with 3 replications. The results revealed that the significant number of tillers per clump, number of leaves per tiller, number of leaves per clump, plant height, leaf length and leaf width at the time of survey. At the time of harvesting, spraying FeSO4 0.5% or Phe 100 ppm recorded most effective, fresh weight of rhizomes per clump (467 and 443 g/clump, respectively), curcumin contents were equal (14.7%) and curcumin yield (17.0 and 17.2 g/clump, respectively).
Keywords: Curcumin content, Curcuma xanthorrhiza Roxb., foliar, phenylalanine, salicylic acid

Tóm tắt

Thí nghiệm được thực hiện tại quận Bình Thủy, thành phố Cần Thơ nhằm nghiên cứu ảnh hưởng của phenylalanine (Phe), salicylic acid (SA), sắt sulfate (FeSO4), kẽm sulfate (ZnSO4) và borax đến sự sinh trưởng và năng suất của giống nghệ Xà cừ Curcuma xanthorrhiza Roxb. Thí nghiệm được bố trí khối ngẫu nhiên gồm 6 nghiệm thức: đối chứng, phun Phe 100 ppm, SA 100 ppm, FeSO4 0,5%, ZnSO4 0,5% và borax 0,5% vào thời điểm 120 ngày sau trồng (NST), với 3 lần lặp lại. Kết quả cho thấy, tại các thời điểm khảo sát, có sự khác biệt về số chồi/bụi, số lá/chồi, số lá/bụi, chiều cao cây, chiều dài và chiều rộng lá. Tại thời điểm thu hoạch, phun FeSO4 0,5% hoặc Phe 100 ppm hiệu quả nhất, khối lượng củ tươi lần lượt là 467 và 443 g/bụi; hàm lượng curcumin đều là 14,73% và năng suất curcumin (lần lượt là 17,0 và 17,2 g/bụi).
Từ khóa: Curcumin, nghệ Xà cừ, phenylalanine, phun trên lá, salicylic acid

Article Details

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