Composition Analysis of Vernalization and Photoperiod Genes in Varieties(lines)Derived from Core Wheat Parent Zhou 8425B
LI Xiaode
BAI Xintong
WU Enzhao
LÜ Chunlei
CHEN Shulin
YIN Guihong
WANG Daowen
ZHANG Kunpu
Abstract：The distribution,combination types of photoperiod and vernalization genes in 219 materials[core wheat parent Zhou 8425B and its derived varieties(lines)]were detected using functional markers of vernalization genes(Vrn-A1,Vrn-B1 and Vrn-D1)and photoperiod genes(Ppd-A1,Ppd-B1 and Ppd-D1),and their effects on yield-related traits were studied.The results indicated that the distribution frequencies of dominant vernalization genes of Vrn-A1,Vrn-B1 and Vrn-D1 were 0,1.37%and 25.11%in 219 materials,respectively.There were three types of vernalization gene combinations in 219 materials,including vrn-A1+vrn-B1+vrn-D1,vrn-A1+vrn-B1+Vrn-D1 and vrn-A1+Vrn-B1+vrn-D1,among which vrn-A1+vrn-B1+vrn-D1 had the highest distribution frequency of 73.52%,and vrn-A1+Vrn-B1+vrn-D1 had the lowest distribution frequency of 1.37%,indicating that most of the 219 materials were winter wheat.All varieties(lines)contained the photoperiod insensitive genes Ppd-A1a,Ppd-B1a and Ppd-D1a.The vrn-A1+vrn-B1+vrn-D1 combination had the highest yield,1 000-grain weight and the shortest plant height;The vrn-A1+Vrn-B1+vrn-D1 combination had the lowest yield,1 000-grain weight and the tallest plant height;The vrn-A1+vrn-B1+Vrn-D1 combination was middle.This indicates that the recessive vernalization gene combination has the highest yield,1 000-grain weight and the shortest plant height;When the vernalization gene combination contains a dominant allele,the plant height increases,and the 1 000-grain weight and yield decrease.
Keywords：WheatVernalization genePhotoperiod geneZhou 8425BDerivative varieties(lines)Yield
Publication Date：2025-05-15
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：8( 23-30 )