CAJ | 학술논문

【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60 Co-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．
【목적】급엄저홍화유다Camellia semiserrata복사유변육충제공이론화기술삼고，이편진일보개량엄저홍화유다충질자원．【방법】용불동제량적60 Co-γ사선복조엄저홍화유다간충자，대충자맹발화유묘생장수도적영향진행연구．【결과화결론】복조처리후충자발아솔화유묘성활솔강저，10～90 Gy적복조제량여유묘사망솔정겁현저정상관，엄저홍화유다적복사반치사제량위47 Gy．복조후유묘묘고、지경생장야수도불동정도적억제작용，병유부분유묘산생료소량분지，단유묘환몰유출현명현적기형형태．
Objective This study aimed to provide theoretical foundation and technical procedures of radi-ation mutation breeding for Camellia semiserrata and to improve the germplasm resource of this species .[Method]Different doses of 60 Co-γray 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 germina-tion 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 le-thal 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 bran-ches.However, no obvious deformity in the seedling morphology is found .