Kaplan D T, O'Bannon J H
J Nematol. 1985 Apr;17(2):158-62.
Two morphologically and karyotypically identical populations of the citrus burrowing nematode, Radopholus citrophilus, differed in their ability to damage and reproduce in roots of citrus rootstocks previously identified as either resistant or tolerant. These populations are considered to be biotypes, and their occurrence may explain the appearance of spreading decline symptoms in plantings of rootstocks previously considered resistant.
柑橘穿孔线虫(Radopholus citrophilus)的两个在形态和核型上相同的群体,在对先前鉴定为抗病或耐病的柑橘砧木根系造成损害和繁殖的能力方面存在差异。这些群体被认为是生物型,它们的出现可能解释了先前被认为抗病的砧木种植园中出现衰退蔓延症状的原因。