60Co-γ 辐照对广宁红花油茶种子发芽及幼苗生长的影响
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广东省林业科技创新专项(2012KJCX011-02);广东省自然科学基金团队项目 (9351064201000002)


Effects of 60Co-γ ray irradiation on the seed germination and seedling growth of Camellia semiserrata
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    【目的】给广宁红花油茶 Camellia semiserrata 辐射诱变育种提供理论和技术参考,以便进一步改良广宁红花油茶种质资源.【方法】用不同剂量的60Co-γ 射线辐照广宁红花油茶干种子,对种子萌发和幼苗生长受到的影响进行研究.【结果和结论】辐照处理后种子发芽率和幼苗成活率降低,10~90 Gy的辐照剂量与幼苗死亡率呈极显著正相关,广宁红花油茶的辐射半致死剂量为47 Gy.辐照后幼苗苗高、地径生长也受到不同程度的抑制作用,并有部分幼苗产生了少量分枝,但幼苗还没有出现明显的畸形形态.

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    【Objective】This study aimed to provide theoretical foundation and technical procedures of radiation mutation breeding for Camellia semiserrata and to improve the germplasm resource of this species. 【Method】Different doses of 60Co-γ ray irradiation were applied to the dry seed of this species, and the effects on seed germination and seedling growth were investigated.【Result and conclusion】Seed germination rate and seedling survival rate were reduced after irradiation treatment. Extremely significant positive correlation existed between irradiation and seedling mortality in the range of 10-90 Gy dose. The half lethal dose of radiation of the test samples was 47 Gy. The inhibition effect on seedling height and its ground diameter growth was found after different irradiations, and some seedlings produced a few branches. However, no obvious deformity in the seedling morphology is found.

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易立飒,李文锋,崔之益,奚如春.60Co-γ 辐照对广宁红花油茶种子发芽及幼苗生长的影响[J].华南农业大学学报,2014,35(5):93-97

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  • 收稿日期:2013-02-21
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  • 在线发布日期: 2014-07-29