נגישות
menu      
Advanced Search
Syntax
Search...
Volcani treasures
About
Terms of use
Manage
Community:
אסיף מאגר המחקר החקלאי
Powered by ClearMash Solutions Ltd -
Chilling and Post-Dormant Heat Requirement as Selection Criteria for Late-Flowering Pears
Year:
1979
Source of publication :
Journal of Horticultural Science
Authors :
Spiegel-Roy, Pinchas
;
.
Volume :
54
Co-Authors:

F. H. Alston

Facilitators :
From page:
115
To page:
120
(
Total pages:
6
)
Abstract:

Pear cultivars and species were grouped into five classes on the basis of chilling requirement. Class 1 required up to 850 h between 0° and 10°C and each succeeding group required 500–550 additional h of chilling. Cultivars with a high chilling requirement were Fleurissant Tard, Barnet, Roem van Wijngaarden, Frangipane and Red Pear. Low chilling requirements were recorded for Pyrus serrulata, P. calleryana, P. betulaefolia, Doyenné d’Eté, Moonglow, Magness, Beurré Rance and Packham’s Triumph. The number of days to bud burst at 15°C in March was used as a measure of post-dormant heat requirement. Chilling requirement and post-dormant heat requirement were closely related and both were sufficiently related to flowering date for each to be useful as a pre-selection criterion in breeding.

Note:
Related Files :
chilling requirement
Heat requirement
pear
Pyrus communis
Show More
Related Content
More details
DOI :
https://doi.org/10.1080/00221589.1979.11514858
Article number:
0
Affiliations:
Database:
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
58128
Last updated date:
06/03/2022 16:25
Creation date:
06/03/2022 16:23
Scientific Publication
Chilling and Post-Dormant Heat Requirement as Selection Criteria for Late-Flowering Pears
54

F. H. Alston

Chilling and Post-Dormant Heat Requirement as Selection Criteria for Late-Flowering Pears

Pear cultivars and species were grouped into five classes on the basis of chilling requirement. Class 1 required up to 850 h between 0° and 10°C and each succeeding group required 500–550 additional h of chilling. Cultivars with a high chilling requirement were Fleurissant Tard, Barnet, Roem van Wijngaarden, Frangipane and Red Pear. Low chilling requirements were recorded for Pyrus serrulata, P. calleryana, P. betulaefolia, Doyenné d’Eté, Moonglow, Magness, Beurré Rance and Packham’s Triumph. The number of days to bud burst at 15°C in March was used as a measure of post-dormant heat requirement. Chilling requirement and post-dormant heat requirement were closely related and both were sufficiently related to flowering date for each to be useful as a pre-selection criterion in breeding.

Scientific Publication
You may also be interested in