Improving the efficiency of hybrid combination preparation in rice breeding by a modified flowering stimulant  

作　　者：Ling Zheng Shangxing Zhang Fengyin Xue Yifan Yun Pin Liu Hua Yuan Weilan Chen Peng Qin Yuping Wang Bingtian Ma Shigui Li Yong Chen Bin Tu 

机构地区：[1]Rice Research Institute of Sichuan Agricultural University,Chengdu 611130,China [2]State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China,Chengdu 611130,China [3]Hybrid Rice Research Center of Neijiang Academy of Agricultural,Neijiang 641000,Sichuan,China [4]Zunyi Agricultural Science Research Institute,Zunyi 563000,Guizhou,China

出　　处：《International Journal of Agricultural and Biological Engineering》2020年第3期36-40,共5页国际农业与生物工程学报（英文）

基　　金：This work was supported by the National Natural Science Foundation of China(Grant No.31571634,31701406);and the Foundation of the Sichuan Provincial Department of Education(Grant No.17ZB0347).

摘　　要：The utilization of hybrid vigor is an important breakthrough in the history of rice breeding.To select the best hybrid combinations,breeders manually perform extensive testing of hybridizations between restorer and sterile lines,which is a laborious and time-consuming process.Here,we report that a modified flowering stimulant containing methyl jasmonate(MeJA),6-benzylamine adenine and kinetin effectively promotes the flowering and seed set of male-sterile rice lines.Different concentrations of the ingredients were tested to identify an optimal formulation.Seed quality evaluation indicated that hybrid seeds from plants sprayed with the flowering stimulant had a higher germination rate than seeds from plants prepared by glume-cutting.In summary,the modified flowering stimulant described in this study may help reduce the labor requirement associated with hybrid rice breeding and improve yield and efficiency.

关 键 词：hybrid rice CROSS flowering stimulant methyl jasmonate KINETIN 

分 类 号：S51[农业科学—作物学]