论文部分内容阅读
为探明酸黄瓜南方根结线虫病抗性的内在机理,以抗病材料酸黄瓜与感病材料北京截头为试材,对南方根结线虫侵入与幼虫发育、根的解剖学及线虫侵入诱导形成的取食位点的细胞学结构进行了比较研究。结果表明,抗病材料酸黄瓜根系中线虫侵入率极显著低于感病材料北京截头(P<0.01),酸黄瓜能够有效抵抗南方根结线虫的侵入;抗、感材料根系中雌雄虫个体比例分别为1∶12和1∶5(P<0.01),抗性反应能够抑制线虫取食和幼虫发育;酸黄瓜根的解剖结构与普通栽培黄瓜相似,酸黄瓜的根不具有结构抗性;抗病反应中细胞发生过敏性坏死,感病反应中无此类现象发生。抗侵入、抑制取食和坏死反应是抗病材料酸黄瓜抗性反应的主要特征。
In order to find out the intrinsic mechanism of root knot nematode resistance in cucumber, the inoculation and growth of root-knot nematode and the root anatomy and nematode invasion of cucumber The cytological structures of the induced feeding sites were compared. The results showed that the inoculation rate of nematodes in cucumber roots was significantly lower than that in Beijing (P <0.01), acid cucumber could effectively resist the intrusion of Meloidogyne incognita; (P <0.01). The resistance reaction could inhibit nematode feeding and larval development. The anatomical structure of the root of cucumber was similar to that of ordinary cucumber. The root of cucumber did not have structural resistance. Disease-resistant cells in allergic necrosis, susceptible reactions in the absence of such phenomena. Anti-invasion, inhibition of feeding and necrosis are the main features of the resistant response of cucumber to disease-resistant materials.