摘要
<正>为了在西北干旱半干旱地区大面积繁育推广马蔺这一耐盐碱、耐干旱的植物品种,对马蔺(Iris)种子进行了物理和化学处理以促进其萌发。物理处理主要使用不同强度的Co60 γ射线辐照种子,而化学处理则是用500mg/kg细胞分裂素溶液浸泡种子。通过对发芽率及各种田间试验数据的分析,证明打破马蔺种子休眠、促进其萌发的最适处理方法是Co60 γ射线辐射+热水浸泡;Co60 γ射线辐射的基本剂量范围确认在0.2580~0.9030C/kg,计量率为2.58×10-4C/(kg·s),浸泡热水温度以65℃为宜。该项研究工作对于西北地区开发新的饲料、药用植物资源、恢复改善当地生态环境、繁荣地方经济均具有一定的理论和实际意义。
Abstract
In order to regenerate and popularize the drought and salttolerance economical plant Iris in northwest China,the physical and chemical treatment methods that can stimulate germination of the Iris seeds have been studied.The physical treatment is Co60γ radiation with different radioactive intensity and the chemical treatment is to soak the seed into the 500 mg/kg solution of cytokinin(gibberellin)for 36 h.Based on both laboratory and field experiment,the most effective way to disturb the seed dormancy and accelerate the germination is hot water soaking plus Co60γ radiation.The suggested radiation intensity is 0.258 0~0.903 0 C/kg and the corresponding radioactive density is 2.58×10-4 C/(kg·s).The proper water temperature to soak the seeds is 65 ℃.The present study is of significance in developing new fodder and medicineuse plants;it is also helpful to restore the deteriorated ecoenvironment in northwest China and to flourish the local economy.
徐秀梅;张新华;王汉杰.
Co~(60)-γ射线辐照对马蔺种子萌发的影响(英文)[J]. 南京林业大学学报(自然科学版). 2003, 27(01): 55-58 https://doi.org/10.3969/j.jssn.1000-2006.2003.01.013
XU Xiumei1,ZHANG Xinhua2,WANG Hanjie3.
A Study on the Germination of Iris lactea Pall.var chinensis Koid Z.Seeds under Co~(60)-γ Radiation[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY. 2003, 27(01): 55-58 https://doi.org/10.3969/j.jssn.1000-2006.2003.01.013
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