Đặc điểm thực vật học loài ráy gai (Lasia spinosa (L.) Thwaites), họ ráy (Araceae)

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Tác giả: Thị Thu Trang Trần, Thị Đẹp Trương

Ngôn ngữ: Vie

Ký hiệu phân loại: 580 Plants

Thông tin xuất bản: Tạp chí Y học TP. Hồ Chí Minh 2021

Mô tả vật lý: 29-36

Bộ sưu tập: Metadata

ID: 408315

Thêm vào giỏ Liên kết toàn văn

Ráy gai dùng trong y học dân gian nhiều nước để trị bệnh gan, viêm khớp... nhưng chưa có tài liệu nghiên cứu về giải phẫu loài này Việt Nam. Mục tiêu: Khảo sát đặc điểm hình thái, vi học của Ráy gai nhằm cung cấp cơ s dữ liệu về thực vật học để giúp nhận diện, kiểm nghiệm dược liệu. Đối tượng và phương pháp: Phân tích, mô tả, chụp hình đặc điểm hình thái, giải phẫu và bột toàn cây loài Ráy gai TP. Hồ Chí Minh. Xác định tên khoa học của loài bằng cách so sánh đặc điểm đã khảo sát với tài liệu. Kết quả: Hình thái: Thân rễ hình trụ. Phiến lá xẻ lông chim, thùy thuôn dài. Toàn cây có nhiều gai nhọn. Bông mo có mo dài, m ra gốc. Hoa đều, lưỡng tính, mẫu 4-6. Phiến hoa hình thìa, có chỉ nhị ngắn, bao phấn 2 ô. Bầu ô, noãn, đính nóc. Giải phẫu: Rễ cấu tạo cấp 1, nội bì có đai Caspary, 13-14 bó dẫn. Thân rễ có bần, mô mềm chứa tinh bột, nhiều bó dẫn cấp 1. Phiến lá cấu tạo dị thể
mô mềm có tinh thể calci oxalat hình kim. Bột thân rễ có nhiều hạt tinh bột thuôn dài, tễ dạng vạch hay điểm, kích thước 20-50 μm X 10-20 μm
tinh thể calci oxalat hình kim dài 100-120 μm. Kết luận: Các đặc điểm hình thái, giải phẫu và bột thân rễ của Ráy gai - Lasia spinosa (L.) Thwaites giúp nhận dạng và kiểm nghiệm về mặt vi học., Tóm tắt tiếng anh, Lasia spinosa (L.) Thwaites is used in traditional medicine of many countries for treatment of hepatopathy, rheumatism... However, literatures related to anatomy of species haven't been recorded in Vietnam. Objectives: In this study, morphological and anatomical characteristics of Lasia spinosa (L.) Thwaites were performed for plant identification. Methods: Morphological anatomical characteristics and micrology characteristics of used parts powder of Lasia spinosa (L.) Thwaites in Ho Chi Minh City are analysed, described and photoghraphed. The scientific name of this species was determined by comparing morphological and anatomical characteristics with those of literatures. Results: Morphology: Cylindrical rhizome. Deeply divided leaf blade, oblong lobes. Stem and leaves with many stout prickles. Spadix has a long spathe with the open base. Flower: regular, bisexual, 4-6 merous. Oblong tepals with triangular hooded apex
1 locular ovary, 1 ovule, apical placentation
short filaments, bilocular anthers. Anatomy: Root: Primary structure with 13-14 vascular bundles, endodermis with casparian strip. Rhizome: many cork layers, a lot of starch granules in parenchyma, many primary vascular bundles. eaves'mesophyll is differentiated into two kinds of cells
parenchyma contains the calcium oxalate raphides. Rhizome powder: the calcium oxalate raphides 100-120 μm in size, starch granules 20-50 μm X 10-20 μm in size, oblong shape, point or line hilum. Conclusions: The morphological anatomical characteristics and rhizome powder of Lasia spinosa (L.) Thwaites help to identify species more exactly.

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