Articles
CYTOLOGY OF THE HYPERSENSITIVITY REACTION IN ROOTSTOCKS-IMPROVEMENT OF ROOTSTOCK BREEDING
Article number
617_2
Pages
17 – 23
Language
English
Abstract
A dual non-sterile culture system of roots of the rootstock `Börner´ as well as of the grape phylloxera has been developed in order to observe the response of roots to phylloxera attack continuously.
The roots of the rootstock `Börner´ reacted with two types of necroses depending on the developmental stage of root zones infected at the time of phylloxera attack.
Necrosis type I developed within 12 to 24h after the phylloxera attacked the root meristem.
Necrosis type II developed within 2 to 5 days after the phylloxera attack at the elongation zone of the root.
Histological and histochemical aspects of necroses development are presented in detail.
The roots of the rootstock `Börner´ reacted with two types of necroses depending on the developmental stage of root zones infected at the time of phylloxera attack.
Necrosis type I developed within 12 to 24h after the phylloxera attacked the root meristem.
Necrosis type II developed within 2 to 5 days after the phylloxera attack at the elongation zone of the root.
Histological and histochemical aspects of necroses development are presented in detail.
Authors
M.F. El-Nady, M.-B. Schröder
Keywords
rootstock, hypersensitivity, necrosis, Vitis, phylloxera
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