XỬ LÝ TIA GAMMA 60CO Ở CÁC LIỀU CHIẾU XẠ KHÁC NHAU TRÊN CỤM CHỒI HAI GIỐNG HOA HUỆ (POLIANTHES TUBEROSA) IN VITRO
Abstract
This study was carried out to evaluate the growth of shoot clusters of two cultivars (Polianthes tuberosa) in vitro irradiated by gamma 60Co rays at different doses to base on evaluation of mutation later. Shoot clusters were cultured on medium MS (Murashieg and Skoog) supplemented vitamins: thiamine, pyridoxine, nicotinic acid and riboflavin 1 mg/l in each agar (8 g/l), sugar 20 g/l, coconut water (100 ml/l). Samples used to irradiate were cultured on 10 cm petry dishes. Each dish cultured 10 shoot clusters. Each treatment had five replicates. Each replicate was one dish. Cultivar number 1 (code H1) was treated at doses 0 (control), 5, 10, 15, 20, 25, 30 Gy. Cultivar number2 (code H2) was treated 0 (control), 10, 20, 30, 40, 50 and 60 Gy. Irradiated samples were cultured on medium MS supplemented vitamins (B1 and B6), agar (8 g/l), sugar (30 g/l), 0.25 mg/l NAA and 1 BA mg/l. Shoot clusters were transferred once per month. Results showed that shoot clusters of two cultivars Polianthes tuberose decreased height and number of shoot when irradiation dose increased.
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