Breeding and Seed Reproduction Techniques of a New Tetraploid Common Buckwheat Variety‘Pintianqiao 3’  

作　　者：Xinghai SHI Jiandong ZHAO Xiulian LI Wenliang CHEN Xiuzhen QIN Jun REN Xiaohuan YANG Jinhu MA 

机构地区：[1]College of Agriculture,Shanxi Agricultural University,Taiyuan 030031,China [2]Agricultural Genetic Resources Center,Shanxi Agricultural University,Taiyuan 030031,China

出　　处：《Agricultural Biotechnology》2024年第3期5-7,13,共4页农业生物技术（英文版）

基　　金：Supported by Scientific and Technological Achievements Transformation Guidance Special Project of Shanxi Province(202304021301054);Science and Technology Innovation Promotion Project of Shanxi Agricultural University(CXGC2023001);Biological Breeding Project of Shanxi Agricultural University in the 14^(th) Five-Year Plan(YZGC106).

摘　　要：[Objectives]This study was conducted to actively carry out the breeding of new tetraploid common buckwheat varieties and its supporting breeding techniques.[Methods]Pintianqiao 3 is a new tetraploid common buckwheat variety developed by College of Agriculture of Shanxi Agricultural University and Agricultural Genetic Resources Center of Shanxi Agricultural University,using‘Pintianqiao 1’as the parent,through mutation treatment with 0.2%colchicine aqueous solution,grain selection,plant selection,isolation and identification,variety comparison,regional test and field investigation.The variety has chromosomes 2n=4X=32,and shows a spring sowing period of 101 d and a summer sowing period of 80 d,large flowers and seeds(with a 1000-grain weight of 41.4 g),and good resistance to lodging.[Results]From 2021 to 2022,Pintianqiao 3 participated in the independent joint regional test of common buckwheat varieties in Shanxi Province,and the average yield in 10 test positions was 1.8 kg,equivalent to 1800 kg/hm^(2),which was 8.4%higher than the control.It passed the field investigation conducted by Shanxi provincial expert group for identification of non-major crop varieties in Dongyang and Kelan experimental sites on September 2-3,2022.On January 4,2024,it passed the preliminary examination of Shanxi Provincial Crop Variety Approval Committee.The seed reproduction technique of Pintianqiao 3 including land selection,preparation before sowing,sowing,field management and timely harvesting has been developed.[Conclusions]This study provides technical support for the demonstration and popularization of this new variety.

关 键 词：TETRAPLOID Pintianqiao 3 BREEDING CHARACTERISTIC Breeding technique 

分 类 号：S33[农业科学—作物遗传育种]