Studies on the Resistance and Immunity of Apples to The Woolly Aphis, Eriosoma Lanigerum (Hausm.)

Genetical studies in pears

“…The hereditary behaviour of resistance to scab in pears is in several respects similar to the inheritance of resistance to the attack of the woolly aphis, Eriosoma lanigerum in apples, cf Crane (i) and Crane et al (1936). It may be recalled that in our studies in cultivated apples (Crane and Lawrence, 1933 ;Lewis and Crane, 1941) discontinuity, even in vegetative characters, was far less frequent than in pears.…”

Electronically monitored stylet penetration pathway of woolly apple aphid,Eriosoma lanigerum(Homoptera: Aphididae), on apple(Malus domestica)

“…However, in autumn and winter the aphids survive in the roots and the use of aphidresistant rootstocks has become the most effective means of control (Cummins et al 1974). Resistance characteristics of different apple cultivars to woolly apple aphid have been used to develop resistant rootstocks for use in apple breeding programmes (Staniland 1923(Staniland , 1924Massee 1931;Crane et al 1936;Roach 1937;Knight et al 1962).…”

Past and present status of virus and phytoplasma diseases in apple rootstocks in New Zealand

“…1932), the clonal apple rootstocks used in New Zealand have all been imported by New Zealand Government research agencies (Crane et al 1936;Mouat & McKenzie 1958;Foxton 1966; and HortResearch plant quarantine records). Initially, these were made available to the fruit growing industry via the New Zealand Fruitgrower's Federation Nursery at Levin, but following the closure of this nursery (Ward 1980), the supply of apple trees to orchardists has been maintained by a number of commercial fruit tree nurseries.…”

“…'s '778', '779', '789', and '793' were introduced from England (Crane et al 1936) as they had the advantage over the 'Mailing' series of being resistant to woolly apple aphid. Following evaluation trials, 'Merton 793' was recommended as a replacement for 'Mailing 16' (Mouat & McKenzie 1958).…”