Nghiên cứu nhân giống vô tính cây lá khôi (Ardisia gigantifolia Stapf)

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Tác giả: Bá Hưng Nguyễn, Thị Thúy Nguyễn, Xuân Trường Nguyễn, Thị Liên Trần, Minh Vũ Trịnh

Ngôn ngữ: Vie

Ký hiệu phân loại:

Thông tin xuất bản: Nông nghiệp & Phát triển nông thôn 2023

Mô tả vật lý: 26 - 34

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ID: 407036

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Tóm tắt
Chủ đề

Nghiên cứu nhân giống vô tính cây lá khôi (Ardisia gigantifolia Stapf) trong vườn ươm huyện Sơn Tây, tỉnh Quảng Ngãi cho thấy: Chiều dài hom dùng nhân giống dài 15 - 20 cm, có 3 - 4 mắt mầm, thời vụ tiến hành giâm hom vào tháng 7 cho tỷ lệ sống đạt trên 88,9%
tỷ lệ sống ngoài đồng ruộng đạt 88,6%. Sử dụng dung dịch NAA với nồng độ 0,2% trong 5 phút kích thích hom giống nảy mầm sớm sau 6 ngày đã bật mầm, thời gian sinh trưởng trong vườn ươm là 100 ngày, khi đó chiều cao cây đạt 37,6 cm, có trung bình 6,1 lá/mầm, chiều dài rễ trung bình đạt 20,1 cm, có trung bình 2,4 mầm/hom, tỷ lệ sống và xuất vườn đạt trên 95%. Giá thể 85% đất mặt + 10% phân chuồng + 5% phân vi sinh cho tỷ lệ sống và chất lượng cây giống tốt nhất. Xuất vườn sau 100 ngày, tỷ lệ sống đạt 90%, tỷ lệ xuất vườn và tỷ lệ sống sau trồng đạt trên 95% và chất lượng cây giống tốt nhất với chiều cao cây xuất vườn đạt 33,5 cm
có 2,8 mầm/hom, có 4,9 lá/mầm. Sử dụng hom thân trong quá trình nhân giống cây lá khôi là tối ưu nhất cho tỷ lệ xuất vườn đạt 95,7%, tỷ lệ sống ngoài đồng ruộng đạt 98,3%, số mầm/hom đạt trung bình 2,4 mầm
7,9 rễ/hom
có 4,9 lá/mầm và chiều cao cây đạt 34,2 cm. Tuy nhiên, vẫn có thể tận dụng hom ngọn hoặc gốc tránh lãng phí nguồn hom giống. Cây giống sinh trưởng trong vườn ươm từ 100 - 120 ngày đủ tiêu chuẩn xuất vườn với tỷ lệ xuất vườn và tỷ lệ sống ngoài đồng ruộng đạt trên 95%., Tóm tắt tiếng anh, Study on clonal propagation of Ardisia gigantifolia Stapf in nursery in Son Tay district, Quang Ngai province shows that: The length of cuttings use for propagation is 15 - 20 cm, with 3 - 4 nodes, the cutting season is in July for survival rate above 88.9%
survival rate in the field reached 88.6%. NAA solution with a concentration of 0.2% for 5 minutes to stimulate early shooting after 6 days, the growth time in the nursery was 100 days, the plant height reached 37.6 cm, average of leaves/bud was 6.1 leaves, average root length of 20.1 cm, average of 2.4 buds/cutting, the survival rate was over 95%. The substrate of 85% topsoil + 10% manure + 5% microbial fertilizer gives the best survival rate and seedling quality. After 100 days from leave the nursery stage, the survival rate reached 90%, the survival rate after planting reached over 95% and the quality of the seedlings was the best with the height of the seedlings reaching 33.5 cm
there are 2.8 buds/cutting, 4.9 leaves/bud. The use of semi - hard wood cuttings in the propagation process is the most optimal for the yield rate of 95.7%, the survival rate in the field reaching 98.3%, the number of buds/cutting on average reaching 2.4 buds
7.9 roots/cutting
has 4.9 leaves/bud and the plant height reaches 34.2 cm. However, it is still possible to take advantage of soft wood cuttings or hard wood cuttings to avoid wasting the source of cuttings. Seedlings grown in the nursery from 100 - 120 days are eligible for garden release with the exit rate and the survival rate in the field reaching over 95%.

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