ẢNH HƯỞNG CỦA MỘT SỐ BIỆN PHÁP KỸ THUẬT ĐẾN KHẢ NĂNG NHÂN GIỐNG IN VIVO HOA HUỆ HƯƠNG TẠI DUYÊN HẢI NAM TRUNG BỘ

Tuberose (Polianthes tuberosa Linn.) is cut-flower, good heat tolerance and bring high economic efficiency for flower growers. In period 2013-2015, Agricultural Science Institute of Southern Central Coast of Vietnam and Agricultural Genetics Institute together carried out study on some technical measures to increase commercial tuber yield and quality for in vivo propagation. The results showed that the size of tubers over 3cm and grown in spring-summer season was suitable for propagation with multiplication coefficient at 8,35 times and the number of commercial tubers with size from 2,1 to >4cm was 4,41 tubers/clump. The best substrate was 2/3 alluvial soil + 1/3 fired rice husk with multiplication coefficient at 8,40 times and the number of commercial tubers with size from 2,1 to >4cm was 4,83 tubers/clump. Seaweed was the best foliar fertilizer for in vivo propagation with multiplication coefficient at 8,77 times and the number of commercial tubers with size from 2,1 to >4cm was 5,15 tubers/clump, accounting for 58,7% of all tubers harvested.