贵州育成油菜品种在长江下游的产量及适应性

为给在贵州生态条件下育成油菜品种在长江下游的推广应用提供事实依据,统计分析了长江下游区试中贵州育成品种的产量及适应性。结果表明:2007—2011年贵州省油菜研究所和贵州省油料研究所育成的油菜品种在长江下游区域共审定8个,占同期该区域审定品种的14.5%,平均产量和产油量分别达175.73kg/667m2和81.44kg/667m2,分别比对照秦优7号增产6.86%和10.35%,比同期该流域其他省审定的47个品种平均产量减产0.3%,产油量增产3.88%;平均含油率达46.34%,比其他省审定的47个品种的平均含油率(43.67%)高2.67百分点,在前10名产量、产油量、含油率中贵州审定的品种分别占2个、3个和6个;产量的稳定性方差、互作方差、Shukla变异系数的平均值均比其他省审定的47个品种小,表明贵州育成品种相对稳定,生育期平均为231d,比对照秦优7号早0.7d,比其他47个品种晚1d;菌核病和病毒病发病株率与对照秦优7号和其他省审定的47个品种相当,但菌核病的病指数相对较高,耐病性相对较差。

Yield and Adaptability of Rape Varieties Bred in Guizhou in the Lower Reaches of Yangtze River

The yield and adaptability of eight rape varieties bred by Guizhou Rape Institute and Guizhou Institute of Oil Crops were statistically analyzed to provide the scientific basis for application of rape varieties bred in Guizhou in the lower reaches of the Yangtze River.Eight rape varieties bred in Guizhou accounted for 14.5% of total approved rape varieties during 2007-2011.The average yield and oil yield of eight rape varieties bred in Guizhou were 175.73 kg /667m2 and 81.44 kg/667m2,6.86% and 10.35% higher than CK(Qinyou 7) separately.The average yield and oil yield of eight rape varieties bred in Guizhou reduced by 0.3% and increased by 3.88% compared with 47 rape varieties bred in other provinces respectively.The average oil rate of eight rape varieties bred in Guizhou reached 46.34%,2.67% higher than 47 rape varieties bred in other provinces.There were 2,3 and 6 varieties in the top ten varieties in yield,oil yield and oil rate respectively.The average values of yield stability variance,interaction variance and Shukla coefficient of variation of eight rape varieties bred in Guizhou were lower than 47 rape varieties bred in other provinces,which indicated that the yield of eight rape varieties bred in Guizhou was relative stability.The average growth period of eight rape varieties bred in Guizhou was 231d,0.7d earlier than CK and 1d later than 47 rape varieties bred in other provinces respectively.The average sclerotiniose and virus rate of eight rape varieties bred in Guizhou was the same as CK and 47 rape varieties bred in other provinces basically,but the sclerotiniose disease index of eight rape varieties bred in Guizhou was relative higher than CK and 47 rape varieties bred in other provinces,which indicated that the tolerance to sclerotiniose of eight rape varieties bred in Guizhou was poor relatively.