Phenotypic Variation and Correlation Analysis of Seedling Traits in Wheat RIL Population under Different Sulfur Levels
Li Jiali
Pu Yanyan
Yu Hongxiang
Zhao Yan
Abstract：With the recombined inbred lines (RIL)population of Chuan 35050 ×Shannong 483 combi-nation and their parents as materials,under water culture,14 seedling traits including seedling height (SH), maximum root length (MRL),tiller number (TN),root number (RN),root dry weight (RDW),shoot dry weight (SDW),total dry weight (TDW),root -shoot ratio (RSR),root sulfur content (RSC),shoot sulfur content (SSC),total sulfur content (TSC),root sulfur use efficiency (RSUE),shoot sulfur use efficiency (SSUE)and total sulfur use efficiency (TSUE)were investigated with three S treatments (1.5,0.5 mmol /L and 0.1 mmol /L).The variation and correlation analysis of these traits were also conducted.The results showed that the variation of seedling traits were all larger under different sulfur levels.With the increase of S concentration,the RDW,RSR,RSUE,SSUE and TSUE showed decreasing trends,while the other 9 charac-ters showed increasing trends.It showed that increasing sulfur concentration properly could promote wheat growth but decrease the sulfur use efficiency.Variation analysis indicated that the phenotypic value of each character in the two parents showed big difference under the same environment.For the average variation coef-ficient in RIL population under different sulfur levels,RSC,SSC and TSC were the maximum,while RN, RSR and SH were the minimum.Correlation analysis showed that dry weight had very significantly positive correlations with S content and S use efficiency.It meant that dry weight traits could be used to represent the accumulation and use efficiency of sulfur.
Keywords：WheatRecombinant inbred lines (RIL)SulfurSeedling stageVariation analysisCor-relation analysis
Publication Date：2016-08-31
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：5( 27-31 )