CAJ | 학술논문

利用抗病优系03-04-034和03-08-080与亲本鸭梨和京白梨的4个回交群体为试验材料，采用离体叶片接种方法，进行了梨黑星病抗病性遗传规律研究。结果表明：4个回交组合后代实生树接种后病斑面积与叶片面积比值的次数分布图均表现为二型分布，而具有发病表现型的实生树，其病斑面积与叶片面积的比值表现为正态分布。说明不发病和发病表型表现为质量性状，而发病表现型的严重度为数量性状。
이용항병우계03-04-034화03-08-080여친본압리화경백리적4개회교군체위시험재료，채용리체협편접충방법，진행료리흑성병항병성유전규률연구。결과표명：4개회교조합후대실생수접충후병반면적여협편면적비치적차수분포도균표현위이형분포，이구유발병표현형적실생수，기병반면적여협편면적적비치표현위정태분포。설명불발병화발병표형표현위질량성상，이발병표현형적엄중도위수량성상。
This study used four backcross groups of resistant super strains 03-04-034 and 03-08-080 and their parents P.bretschneideri cv Yili and P.×ussuriensis cv Jingbaili and the method of inoculation in vitro to study the genetic law of resistant to pear scab.The results indicated that frequency distribution diagram of the ratio of disease spots area/leaf area of four backcross groups was shown as two-type distribution, and in diseased seedling trees, the ratio of disease spots area/leaf area was shown as normal distribution , so non-diseased and diseased genotype was a pair of qualitative traits, and severity of disease phenotype was a quantitative trait.