Studies on Mechanism of Scab Resistance in Pears

doi:10.7668/hbnxb.2007.S2.056

Abstract

Abstract: Studies development on specifications of pear scab,infection mechanism,heredity of resistance and resistant mechanism were viewed.The exact position where pear scab parasite in leaves was pectin layer.The primary injections of V.nashicola to resistant,suspectible and non-host materials were similar,the increasing rate of subcuticular hyphae on suspectible material is far higher than resistant and non-host material,and dead hyphae appeared on resistant and non-host material,which indicated that resistance expressed after hyphae had invaded cuticular.Suspectible and resistant allele of pear scab located in different linkage groups,and resistant gene of pear scab was homologous to apple scab.

Key words: Pear scab, Specifications, Pectin layer, Linkage mapping

CLC Number:

S436.612

ZHANG Hai-e, YUE Wen-quan, ZHANG Xin-zhong. Studies on Mechanism of Scab Resistance in Pears[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2007, 22(S2): 239-242. doi: 10.7668/hbnxb.2007.S2.056.

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