蘿蔔抗嵌紋病育種

Abstract

由日本引進之耐(抗)病性品種—美濃早生與本省栽培之經濟品種—頭州早雜交，其後代經過九年之選拔與耐(抗)病性檢定，已選出具耐(抗)病之齒葉長根型與短根型系統，此二系統在本分所種植，其田間之自然罹患TuMV(蕪菁嵌紋病)之情形如下：在本分所試驗田間十月播種部分，齒長型之耀病率為0.80～1.32%，齒短型之羅病率為0.54~1.03%，而對照品種矸仔為15.03%，大白杙18.48%；新社地區試作部分，齒長型罹病率為21.80%，齒短型為21.08%，而對照品種則高達54.31%。顯示選獲之齒藥型F抗病性均較對照栽培品種為强。另二系統之產量及品質亦均較對照品種為優。 A turnip mosaic virus (TuMV) resistance variety, Mei-No-Wa-Sei, was introduced from Japan to cross with a local commercial variety, Tou-Chou Early. After nine years of progeny selection and testing for tolerance/resistance of disease, two advanced lines, pinnate leaf long and pinnate leaf short, have been selected. These two advanced lines were tested at different experimental plots in fiscal year of 1990. The results indicated that the incidence of TuMV under field condition was 0.80-1.32% for pinnate leaf long and 0.54-1.03% for pinnate leaf short on October planting. While the control variety, Kan-Tzeand Ta-Pai-Ze were 15.03% and 18.48% respectively. In Hsin-She plot, it was found that the incidence of TuMV was 21.80% for pinnate leaf long and 21.08% for pinnate leaf short, while the control was 54.31%. These results were not only indicated that F9 pinnate leaf type was stronger disease resistance than control variety, the yield and quality were also better than control one.