Abstract
Curcuma zedoaria Rosc. (Zingiberaceae) is a herbaceous and rhizomatous perennial species found in tropical countries, such as Viet Nam, India and Thailand. Rhizomes of this plant accumulate essential oil which is used as a condiment, in perfumery, and as a medicine. Growth of the rhizomes is derived from a primary thickening meristem which produces vast amounts of parenchyma to the inside. Essential oil droplets in transverse thin sections from the rhizomes are observed under light microscope. Roles of plant growth regulators on rhizome growth and relationship between growth and essential oil production were discussed.
Highlights
Curcuma zedoaria Rosc. (Zingiberaceae) is a herbaceous and rhizomatous perennial species found in tropical countries, such as Viet Nam, India and Thailand
Rhizomes of this plant accumulate essential oil which is used as a condiment, in perfumery, and as a medicine
Growth of the rhizomes is derived from a primary thickening meristem which produces vast amounts of parenchyma to the inside
Summary
Vùng giữa của mỗi phần củ (khi chia mỗi phần thành ba vùng có chiều dài bằng nhau) ñược dùng ñể ly trích và ño hoạt tính của các chất ñiều hòa tăng trưởng thực vật nội sinh, sau sự phân ly trên bản mỏng sắc kí Silicagel F254 với dung môi di chuyển là hỗn hợp chloroform: methanol: acid acetic (tỷ lệ 80: 15: 5 theo thể tích), ở nhiệt ñộ 300C. Thân Nghệ ñen gia tăng ñường kính từ vùng mô với các tế bào phân chia mạnh, ñược gọi là mô phân sinh dày cấp một.
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