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《Chinese Agricultural Science Bulletin》 2011-18
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Correlation Analysis of 13 Main Agronomic Characters and Drought Resistance in Corn Hybrids

Du Zhihong,Zhang Fuyao,Ping Jun ' ai,Lv Xin,Li Huiming,Tian Zhaoxiang,Yang Tingting (Sorghum Institute,Shanxi Academy of Agricultural Sciences,Jinzhong Shanxi 030600)  
Select 13 different corn hybrids as experimental material,then planted them in irrigated and dry land.Investigated 21 character values of corn,Compare with 15 character values in flood and drought between different.Among them,the production was the uppermost index.The difference between flood and drought to the maximum was 7600.5 kg.And the smallest difference was 1000.5 kg.The average cut of drought reach 4357.5 kg.Obtain 5 character values drought resisting coefficient and drought resisting index.Output drought resisting coefficient scoped 0.2245-0.8571,drought resisting index scoped 0.1289-1.3425.All these provided the basis for the selection of drought tolerant varieties.Estimate value of 12 traits to the genetic correlation coefficient of flood and drought.Yield of flood and grain weight grain weight,ear length,ear diameter,shaft diameter,kernel weight,the seed rate and other traits of the genetic correlation coefficient was positive,correlation coefficient scope 0.3513-0.9999,Yield correlated negative with plant height,growth period,ear,stem diameter,tassel branch number of genetic traits.Correlation coefficient scoped-0.6336--0.0846.Yield of drought correlated positive with grain weight,plant height,ear,stem diameter,ear length,ear diameter,shaft diameter,kernel weight,kernel rate of 9 traits genetic correlation coefficient,correlation coefficient scoped 0.0153-0.9898.Yield and growth stages,tassel branch number and other traits of the genetic correlation coefficient was negative,the correlation coefficient of-0.4962--0.0157.All data between 12 characters the relatedness size,the flood and drought between relatedness similarities and differences.These test data for corn's drought resisting breeding research to provide the basis,especially the high output in corn,stable production good,chooses other related character.
【Fund】: 山西省农业科学院重点项目“饲草玉米优质、高产关键技术研究”(YD0904)
【CateGory Index】: S513
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