大叶相思白粉病叶状柄病理解剖和抗病性研究  

A STUDY ON THE PATHOLOGICAL ANATOMY OF THE PHYLLODE OF Acacia avriculiformis AND ITS RESISTANCE TO THE POWDERY MILDEW PATHOGEN,Oidium sp.

作　　者：余倩珠[1] 岑炳沾[2] 

机构地区：[1]华南农业大学生物系 [2]华南农业大学林学院

出　　处：《华南农业大学学报》1990年第4期72-78,共7页Journal of South China Agricultural University

摘　　要：根据对大叶相思(Acacia (?) form(?)is A.Cunn.ex Benth)感病叶状柄的病理解剖,白粉菌可直接穿透表皮细胞或从细胞间隙和气孔等途径进入组织以吸胞吸取养份。接种后高感叶状柄表皮细胞出现死亡,变形,叶肉栅栏组织叶绿体减少和部份解体,而高抗叶状柄表皮细胞只见过敏性坏死现象。叶状柄的表皮细胞壁和角质厚度与植物抗性相关。Based on the pathological anatomy of infected phyllodes of Acacia cnariculiformis,it was demonstrated that the pathogens,Oidium sp. ,could directly invade the tissues via. the epidermal cells,intercellular space or stomata, and assimilate nutrient by their haustoria. After inoculation tests the highly susceptible phyllodes showed death and deformity of epidermal cells and decrease and partial degradation of chloroplasts in the parenchyma of the leaves whereas highly resistant phyllodes showed only allergic necrosis in their epidermal cells. There was a correlation berween the thickness of the epidermal cell wall and its cuticule in the phyllode and disease resistance.

关 键 词：大叶相思 白粉病 叶状柄 病理解剖 

分 类 号：S432.1[农业科学—植物病理学]