黑龙江省大豆新品系抗灰斑病鉴定结果

GENERAL REVIEW IN APPRAISAL RESULT OF RESISTANT OF NEW STRAINS TO CERCOSPORA SOJINA HARA.OF SOYBEAN IN HEILOBNGHIANG PROVINCE

试验是从 1987- 2 0 0 0年 14年间对黑龙江省各大豆育种单位育成的新品系在进入区试或生试阶段统一进行抗灰斑病鉴定。对供试的 6 38份大豆品系鉴定结果表明 ,高抗品系 5 5份 ,抗病品系 80份 ,中抗品系 2 10份 ,感病和高感品系 30 3份。对鉴定结果进一步分析看出 ,1994年以前的大豆新品系抗病性明显好于 1994年以后的 ,1994年以前高抗、抗病、中抗、感病和高感材料的百分率分别为 2 2 .7%、11.2 %、2 9%、37% ;1994年以后高抗、抗病、中抗、感病和高感材料分别为 0 .2 %、11.5 %、38.7%、4 9.6 % ,其中高抗材料所占比例明显下降 ,中抗和感病材料所占比例明显上升。

new strains were appraised for resistant to Cercospora sojina Hara. in region test and produce test period, these strains were bred by every soybean breeding unit in whole province, the experiment was conducted in 14 years from 1987 to 2000. The result showed: highly resistant strains had 55 , resistant strains had 80 , middle resistant strains had 210 , susceptible strains and highly susceptible strains had 303 . Appraisal result was further analyzed, showed: resistance of soybean new strains of breeding before 1994 was clearly higher than new strains of breeding after 1994, the strains before 1994, highly resistant, resistant, middle resistant, susceptible and highly susceptible respectively was 22.7%, 11.2%, 29%, 37%; the strains after 1994, respectively was 0.2%, 11.5%, 38.7%, 49.6%; the proportion of highly resistant materials was clearly reduction, the proportion of middle resistant and susceptible materials was clearly rise.