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192988

EFFECT OF SOME PEAR ROOTSTOCKS ON GROWTH, FRUITING AND RESISTANCE TO FIRE BLIGHT DISEASE OF "LE-CONTE" PEAR CULTIVAR

Article

Last updated: 28 Dec 2024

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Tags

Agricultural Economics and Management Sciences

Abstract

This study was carried out during 2012 and 2013 seasons on "LeConte" pear trees budded on four rootstocks namely, "Winter Nelis", "Pyrus
betulaefolia", "
Pyrus calleryana" and "Pyrus communis", planted at ElKanater Horticultural Research Station, Kalubeia governorate, Egyp. This
study was planned to evaluate the effect of these rootstocks on some
horticultural characters as well as resistance the fire blight disease of "LeConte" cultivar.
Trunk and shoot parameters of "Le-Conte" trees were lower on
"P.
communis"
and "Winter Nelis" rootstocks than those on "P. betulaefolia"
and "P. calleryana". Average numbers of spurs and average number of
flowers/spurs or/shoot were high on "
P. betulaefolia", moderate on "P.
communis"
and "P. calleryana" but low on "Winter Nelis".
Full Blooming date was early on "
P. betulaefolia" and "P.
calleryana"
(9–12 of March) which reflected on the production but late on
"
P. communis" and "Winter Nelis" (14–16 of March). Results cleared that,
"P. betulaefolia" and "P. communis" rootstocks were more productive for
"Le-Conte" cultivar than "
P. calleryana" and "Winter Nelis".
With respect of chemical fruit characters, TSS and TSS/acid ratio
were high and acidity was low on "
P. communis" and 'Winter Nelis", on the
other hand, TSS and TSS/acid ratio were low and acidity was high on "
P.
calleryana"
and "P. betulaefolia".
However, "
P. calleryana" and "P. betulaefolia" rootstocks under
nature infection conditions,
expressed resistance to fire blight disease but
"P. communis" and "Winter Nelis" expressed susceptibility in this respect.
There were a positive relationship between horticultural characters
and resistance of pear tree to fire blight disease. "
P. calleryana" and "P.
betulaefolia"
rootstocks as resistant were early in the flowering (9–12 of
March) and had vigorous tree growth as well as fruit juice has less TSS and
higher acidity. While "
P.communis" and "Winter Nelis" rootstocks as
susceptible to the disease were
lately flowering (14–16 of March) and had
week growth trees. as well as fruit juice has less acidity and higher TSS.

Hence, P. betulaefolia" and "P. calleryana" showed more
resistance to fire blight disease. However, "P. betulaefolia" is considered
better rootstock to "Le Conte" cv. than "P. calleryana" which susceptible to
lime-induced chlorosis.



DOI

10.21608/fjard.2015.192988

Keywords

pear rootstocks, "Winter Nelis', "Pyrus betulaefolia", "Pyrus calleryana", "Pyrus communis", "Le-Conte", fire blight disease, Erwinia amylovora, Horticultural characters

Authors

First Name

S.M.

Last Name

Abed Elrhim,

MiddleName

-

Affiliation

Deciduous Fruit Dept. Hort. Res. Instit., Agric. Res. Centre, Giza-Egypt

Email

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City

-

Orcid

-

First Name

N. Y.

Last Name

Abd El-Ghaffar

MiddleName

-

Affiliation

Plant Pathol. Dept. Fac. of Agric., Ain Shams University

Email

-

City

-

Orcid

-

First Name

A. K. M.

Last Name

Korra

MiddleName

-

Affiliation

Plant Pathol. Res. Inst., Agric. Res. Centre, Giza-Egypt

Email

-

City

-

Orcid

-

Volume

29

Article Issue

1

Related Issue

27350

Issue Date

2015-01-01

Receive Date

2021-09-05

Publish Date

2015-01-01

Page Start

70

Page End

81

Print ISSN

1110-7790

Online ISSN

2805-2528

Link

https://fjard.journals.ekb.eg/article_192988.html

Detail API

https://fjard.journals.ekb.eg/service?article_code=192988

Order

6

Type

Research articles.

Type Code

1,920

Publication Type

Journal

Publication Title

Fayoum Journal of Agricultural Research and Development

Publication Link

https://fjard.journals.ekb.eg/

MainTitle

EFFECT OF SOME PEAR ROOTSTOCKS ON GROWTH, FRUITING AND RESISTANCE TO FIRE BLIGHT DISEASE OF "LE-CONTE" PEAR CULTIVAR

Details

Type

Article

Created At

23 Jan 2023