Application of wheat corner stone parents and innovation of germplasm resource in Sichuan Province
The corner stone parents of 170 registered (recognized) wheat cuhivars are analyzed in this paper.It is shown that the corner stone parents of the 58 registered cultivars and the 9 recognized cuhivars before year of 2000 belong to Fan 6 and Mianyang No.11 series,respectively;33 registered cultivars belong to Fan 6 and its total coefficient parentage is 9.25,which accounts for 49.28％;21 registered cultivars belong to Mianyang No.11 series and the total coefficient parentage is 8.45,which accounts for 31.35％.Years 2001-2013 were a golden period of wheat breeding industry in Sichuan Province,with total 112 registered cultivars for new varieties of wheat,which overcame the weakness of using a single and narrow germplasm resource before 2000.More than 5 registered cultivars of the backbone parents were bred,including Mianyang 26,Guinong 21 and 92R system materials.They accounted for 10.7％,9.8％,6.3％ of the 112 registered cultivars in this period.In addition,breeders created a batch of new germplasm resources:synthetic cultivar Chuanmai 42,SW system germplasm resources,R system germplasm resources,which started a new round of multiple backbone parent series.
Sichuanwheatregistered (recognize) cultivarcorner stone parentscoefficient of parentagegermplasm resources
NETL
NSTL
万方数据
维普
