摘要
以“冠军”和“鲁芦笋七号”2个品种芦笋种子为试材,采用^(60)Co-γ射线对种子进行辐射处理,研究了不同辐射剂量(100、200、300、400、500、600 Gy)对芦笋种子萌发及幼苗生长的影响,探讨不同品种种子萌发及幼苗生长相关指标对不同辐射处理的响应,以期为芦笋辐射诱变育种研究提供参考依据。结果表明:2个品种的萌发指标均呈现先升高后降低的趋势,在剂量为100 Gy时对种子萌发有促进作用,当剂量达到400 Gy时,胚根、胚芽生长受到强烈抑制;种子成苗率与辐射剂量呈负相关。辐射剂量对幼苗生长的诱变效应也与品种有关,“冠军”幼苗生长与辐射剂量增加呈负相关,“鲁芦笋七号”幼苗的生长与辐射剂量增加呈先升高后降低趋势。线性回归分析结果表明,“冠军”和“鲁芦笋七号”对应的半致死剂量分别为389 Gy和362 Gy。
The seeds of‘Guanjun’and‘Lulusun No.7’of Asparagus officinalis L.were used as test materials and were treated with ^(60)Co-γ-radiation.The effects of different radiation doses(100,200,300,400,500,600 Gy)on the germination and seedling growth of asparagus were studied and investigated the response of seed germination and seedling growth indexes of different varieties to different radiation treatments,in order to provide reference for radiation mutagenesis breeding of asparagus.The results showed that the germination indexes of the two varieties increased first and then decreased.When the dose was 100 Gy,the seed germination was promoted.When the dose reached 400 Gy,the radicle and germ growth were strongly inhibited.Seed emergence rate was negatively correlated with radiation dose.The mutagenic effect of radiation dose on seedling growth was also related to variety.The growth of‘Guanjun’seedling was negatively correlated with the increase of radiation dose,while‘Lulusun No.7’seedling was first increased and then decreased.The results of linear regression analysis showed that LD 50 of‘Guanjun’and‘Lulusun No.7’were 389 Gy and 362 Gy,respectively.
作者
牛晓雪
李霞
牟萌
包艳存
路远
李保华
NIU Xiaoxue;LI Xia;MOU Meng;BAO Yancun;LU Yuan;LI Baohua(Asparagus Research Institute,Weifang Academy of Agricultural Sciences,Weifang,Shandong 261071)
出处
《北方园艺》
CAS
北大核心
2023年第23期15-21,共7页
Northern Horticulture
基金
山东省重点研发计划(农业良种工程)资助项目(2022LZGC024)
2021年市级乡村振兴重大专项资金资助项目。
