CAJ | 학술논문

通过连续3年的病果致病菌分离和病原菌回接试验,结果证明,引起枣果实黑斑病的致病菌是Alternmia tettuissima(rr)Wiltsh和Alternaria sp,属弱寄生菌;由于使用GA增加产量,降低了叶果比,果实营养不良导致免疫力下降是黑斑病发生的内因;8月下旬多雨引起的果实生理紊乱症(皱胴病)是黑斑病发生的重要诱因;成熟期遇雨是黑斑病发生的必要条件.
통과련속3년적병과치병균분리화병원균회접시험,결과증명,인기조과실흑반병적치병균시Alternmia tettuissima(rr)Wiltsh화Alternaria sp,속약기생균;유우사용GA증가산량,강저료협과비,과실영양불량도치면역력하강시흑반병발생적내인;8월하순다우인기적과실생리문란증(추동병)시흑반병발생적중요유인;성숙기우우시흑반병발생적필요조건.
After three-year tests on separation of pathogenic fungus in diseased jujube fruits and field-inoculation of fungi separated, Alternaria tenuissima (Fr) Wiltsh and Alternaria sp are classified as the fungi which may cause jujube black spot, and they are weak parasitic fungi. Because of the use of GA to increase yield, the ratio of leaves to fruit is reduced, and the innutrition of fruits results in descem of immunity, which is believed the internal factor of black spot. It is concluded that the bottom-crinkle of jujube, a disease of physiological disorder resulted from the rain during later August, is an important inducing factor for black spot. Rain during the maturing period is necessary condition for the black spot.