MA Tian-hang
School of Agriculture,Ludong University/Key Laboratory of Molecular Module-Based Breeding of High Yield and Abiotic Resistant Plants in Universities of ShandongCAI Yi-biao
School of Agriculture,Ludong University/Key Laboratory of Molecular Module-Based Breeding of High Yield and Abiotic Resistant Plants in Universities of ShandongXIONG Yong-xing
Modern Breeding Technology Center,Liaocheng Academy of Agricultural Sciences,Shandong LiaochengXU Qin-qing
Shandong Agricultural Technology Extension CenterZHOU Xiao-han
School of Agriculture,Ludong University/Key Laboratory of Molecular Module-Based Breeding of High Yield and Abiotic Resistant Plants in Universities of ShandongKONG Wen-chao
School of Agriculture,Ludong University/Key Laboratory of Molecular Module-Based Breeding of High Yield and Abiotic Resistant Plants in Universities of ShandongLI Jing-xue
School of Agriculture,Ludong University/Key Laboratory of Molecular Module-Based Breeding of High Yield and Abiotic Resistant Plants in Universities of ShandongCHENG Rui
School of Agriculture,Ludong University/Key Laboratory of Molecular Module-Based Breeding of High Yield and Abiotic Resistant Plants in Universities of ShandongLI Shi-hui
School of Agriculture,Ludong University/Key Laboratory of Molecular Module-Based Breeding of High Yield and Abiotic Resistant Plants in Universities of ShandongCAO Ming-su
School of Agriculture,Ludong University/Key Laboratory of Molecular Module-Based Breeding of High Yield and Abiotic Resistant Plants in Universities of ShandongWANG Chen-yang
School of Agriculture,Ludong University/Key Laboratory of Molecular Module-Based Breeding of High Yield and Abiotic Resistant Plants in Universities of ShandongZHAO Chun-hua
School of Agriculture,Ludong University/Key Laboratory of Molecular Module-Based Breeding of High Yield and Abiotic Resistant Plants in Universities of ShandongQIN Ran
School of Agriculture,Ludong University/Key Laboratory of Molecular Module-Based Breeding of High Yield and Abiotic Resistant Plants in Universities of ShandongSUN Han
School of Agriculture,Ludong University/Key Laboratory of Molecular Module-Based Breeding of High Yield and Abiotic Resistant Plants in Universities of ShandongWU Yong-zhen
School of Agriculture,Ludong University/Key Laboratory of Molecular Module-Based Breeding of High Yield and Abiotic Resistant Plants in Universities of ShandongCUI Fa
School of Agriculture,Ludong University/Key Laboratory of Molecular Module-Based Breeding of High Yield and Abiotic Resistant Plants in Universities of Shandong1.School of Agriculture,Ludong University/Key Laboratory of Molecular Module-Based Breeding of High Yield and Abiotic Resistant Plants in Universities of Shandong;2.Modern Breeding Technology Center,Liaocheng Academy of Agricultural Sciences,Shandong Liaocheng;3.Shandong Agricultural Technology Extension Center
Shandong Provincial Key Research and Development Program(2019GNC106126),National Natural Science Foundation of China(31871612),Youth Innovation Science and Technology Program of Colleges and Universities in Shandong Province (2019KJF002),Yantai Science and Technology Planning Project(2020XCZX045)
qSsnps-5D,derived from the backbone parental line Jing 411(J411),is a major stable QTL for sterile spikelet number per spike(SSNPS). This study aimed to decipher the genetic effect of this QTL and its use in wheat varieties. Two populations,including a recombinant inbred lines derived from the cross of Kenong 9204(KN9204)and Jing 411(KJ-RIL),and a natural mapping population comprised by 314 wheat authorized varieties or advanced lines,were involved. The experiment results showed that qSsnps-5D was confirmed in an interval of 3.41 Mb from 0.72 Mb to 4.13 Mb on chromosome 5D among 8 datasets. Excellent allele of qSsnps5D from J411 could increase spikes per plant but significantly decrease thousand kernel weight in both KJ-RIL and the natural mapping populations. However,the genetic effects of qSsnps-5D on kernel number per spike and yield per plant were differing between the two populations. Two close linkage markers of qSsnps-5D,i.e.,AX110565536 and AX-86170796 were used to specify the breeding utilization characteristics of qSsnps-5D in the natural mapping population. The excellent haplotype for qSsnps-5D(Hap-GG-CC)was often found(80.60%) in the foreign varieties. Among the Chinese varieties,higher rates of excellent haplotype(Hap-GG-CC)were found from varieties of Qinghai province,Sichuan province and Henan province,but the rates of haplotype HapGG-CC were lower in varieties of Shandong,Beijing,Shaanxi and Hebei. The rates of Hap-GG-CC in varieties released from 1980 s to present were constantly declined. To facilitate the application of qSsnps-5D in future molecular breeding programs,we developed a PCR-based InDel molecular marker named as 5D-1620921. Altogether,this study provided insights for the application of qSsnps-5D in molecular breeding programs of wheat.