论文部分内容阅读
【目的】探讨60Co-γ射线辐射对大麦后代性状及β-葡聚糖含量的影响。【方法】采用不同剂量的60Co-γ射线辐射处理3个不同基因型大麦种子,测定其后代株高、成穗数、穗长、穗粒数及β-葡聚糖含量等性状。【结果】60Co-γ射线辐射对株高具有抑制作用,且因品种不同而存在差异;成穗数和穗长在低剂量时,既有抑制也有促进作用的应激效应,而当辐射剂量大于200Gy时,均表现为显著的抑制作用;穗粒数无显著变化;β-葡聚糖含量表现为低剂量促进高剂量抑制的变化规律,其中,甘啤7号和甘啤4号在辐射剂量为200Gy时β-葡聚糖含量最大,XANAOU在100Gy时最大。【结论】60Co-γ射线辐射剂量为200Gy左右时,能有效改良大麦部分性状尤其是β-葡聚糖含量。
【Objective】 The objective of this study was to investigate the effects of 60Co-γ-ray irradiation on the traits of barley and the content of β-glucan. 【Method】 Three different genotypes of barley seeds were treated with different doses of 60Co-γ ray and their plant height, spike number, spike length, grains per spike and β-glucan content were measured. 【Result】 60Co-γ radiation had inhibitory effect on plant height, and there were differences due to different cultivars. The number of spikelets and spike length at low doses both inhibited and promoted the stress effects. When the radiation dose was greater than 200Gy, showed significant inhibition; no significant changes in grain number per spike; β-glucan content showed low-dose to promote high-dose inhibition of changes, which, Gan Beer 7 and Gan Beer No. 4 in the radiation dose The β-glucan content was the largest at 200 Gy and the largest at 100 Gy. 【Conclusion】 60Co-γ ray irradiation dose of about 200Gy, can effectively improve barley part traits, especially β-glucan content.