小麦等离子束处理的生物学效应研究  

BIOLOGICAL EFFECTS OF ISO-ION BEAM TREATMENT IN WHEAT ( THITICUM AESTIVUM L. )

作　　者：李洪杰[1] 郭北海[1] 孙凤瑞[1] 方仁[1] 王子宁[1] 裴翠娟[1] 罗廷礼[2] 

机构地区：[1]河北省农林科学院粮油作物研究所,石家庄050031 [2]河北省科学院激光研究所,石家庄050051

出　　处：《激光生物学》1993年第3期324-327,共4页Acta Laser Biology Sinica

摘　　要：本文以早熟品种冀麦31号和晚熟品系88—4284萌动种子为材料,报道了等离子束处理对小麦种子萌发的影响和细胞学效应。观察表明,等离子束长时间处理抑制种子发芽。在根尖细胞有丝分裂中期观察到染色体断裂和断片,冀麦31号染色体断裂的频率为0.49—1.34％,88—4284为0.21—2.14％。随着处理时间延长,染色体断裂频率逐渐提高。有丝分裂后期和末期出现大量的落后染色单体和染色体桥。在花粉母细胞减数分裂中期Ⅰ,经过等离子束处理的材料出现环状单价体。后期Ⅰ观察到染色体倒位造成的染色体桥和断片。在四分体期还有微核出现。The effects of iso-ion beam treatment on seed emergence and cytology in wheat (Triticum aes-tivum L. c. v Jimai No. 31 and 88- 4284) were reported in the present paper. It is observed that seed emergence was inhibited by iso-ion beam treatment. Chromosome fragments appeared at metaphase of mitosis with 0. 49 meiotic metaphase I , Chromosome bridges and fragments were also observed at anaphase I which were caused by inversion . Micronuclei were present in tetrads in the materials treated with iso -ion beam.

关 键 词：等离子束 生物学效应 小麦 

分 类 号：S123[农业科学—农业基础科学]