摘要
【目的】探明氮离子束注入后,小麦诱变群体(M1代群体)氮素利用及产量品质的变化趋势,为小麦优质生产提供理论依据。【方法】以小麦品种连麦7号和烟农19为供试材料,通过注入不同剂量氮离子束(0、2×10^16、3×10^16、4×10^16N+/cm^2),分析不同小麦品种诱变群体氮素利用、籽粒产量、蛋白质含量和加工品质的变化趋势。【结果】连麦7号和烟农19小麦品种进行氮离子束注入后,诱变群体籽粒氮素积累、氮收获指数、氮素利用效率、氮素生产效率、产量、蛋白质含量及加工品质较对照均有所降低,且随注入剂量的增加,诱变群体产量和品质的负效应不断增大。2个小麦品种处理群体的氮素积累和籽粒产量在注入剂量超过2×10^16N+/cm^2条件下显著下降,蛋白质含量及加工品质在剂量超过3×10^16N+/cm^2时下降较为显著。同时,在高剂量条件下,连麦7号诱变群体氮素利用效率和籽粒产量下降幅度较烟农19诱变群体小,在氮素积累和籽粒品质方面连麦7号诱变群体下降较为显著。【结论】氮离子束注入引起小麦籽粒产量、氮素利用及品质下降,且注入剂量越大,对小麦的损伤越显著;氮离子束诱变群体中,籽粒产量和氮素利用效率的损伤表现为烟农19大于连麦7号,但氮素积累及加工品质方面连麦7号诱变群体下降较为显著。
【Objective】To explore the changes of nitrogen utilization and grain quality of wheat mutation population induced by N^+ ion beam.It can provide reference for wheat quality production.【Methods】Different wheat varieties(Lianmai No.7 and Yannong No.19)were used to analysis the changes of nitrogen utilization,grain yield,protein content and processing quality by implanting different doses of nitrogen ion beam(0,2×10^16,3×10^16 and 4×10^16N+/cm^2).【Results】The main results were as follows:The nitrogen accumulation,nitrogen harvest index,nitrogen utilization,content of protein and processing quality of mutation population of Lianmai No.7 and Yannong No.19 were decreased lower than CK.As the increasing of implanting dose,the negative effects of N^+ ion beam on grain yield and quality of mutation population increased continuously.Nitrogen accumulation and grain yield of mutation population were decreased significantly after implanting dose of more than 2×10^16 N^+/cm^2.Content of protein components and processing quality of two wheat varieties decreased significantly after implanting dose of more than 3×10^16 N^+/cm^2.The decrease amplitude of nitrogen use efficiency and grain yield of mutation population of Lianmai No.7 were lower than mutation population of Yannong No.19 under high implanting dose,Meanwhile,nitrogen accumulation and grain quality of mutation population of Lianmai No.7 were decreased significantly.【Conclusion】The above results showed that there existed negative effects of N^+ ion beam on grain yield,nitrogen utilization and grain quality of wheat,and the higher the implantation dose,the more significant the damage to wheat.In addition,the damage of high N^+ ion beam dose on grain yield and nitrogen use efficiency of mutation population on Yannong No.19 were higher than Lianmai No.7,while the nitrogen accumulation and grain quality of mutation population on Lianmai No.7 were decreased significantly than Yannong No.19.
作者
樊继伟
郭明明
王康君
孙中伟
张广旭
李强
李筠
章跃树
代丹丹
陈凤
FAN Jiwei;GUO Mingming;WANG Kangjun;SUN Zhongwei;ZHANG Guangxu;LI Qiang;LI Jun;ZHANG Yueshu;DAI Dandan;CHEN Feng(Institute of Lianyungang Agricultural Science of Xuhuai Area of Jiangsu/Lianyungang Academy of Agricultural Sciences,Lianyungang 222000,China;Lianyungang Agricultural and Rural Bureau,Lianyungang 222000,China)
出处
《北方农业学报》
2020年第3期47-54,共8页
Journal of Northern Agriculture
基金
江苏省农业科技自主创新资金项目[CX(18)1001]
江苏省现代农业(小麦)产业技术体系项目(JATS[2019]157)
连云港市财政局专项资金项目(QNJJ1914)。
关键词
氮离子束
注入剂量
小麦诱变群体
氮素利用
籽粒品质
N^+ion beam
Implantation dose
Wheat mutation population
Nitrogen utilization
Grain quality
