Chilling and heat requirements of Japanese plum cultivars for flowering
CAMPOY, José Antonio
Biologie du fruit et pathologie [BFP]
Max Planck Institute for Plant Breeding Research [MPIPZ]
< Reduce
Biologie du fruit et pathologie [BFP]
Max Planck Institute for Plant Breeding Research [MPIPZ]
Language
en
Article de revue
This item was published in
Scientia Horticulturae. 2018, vol. 242, p. 164-169
Elsevier
English Abstract
The chilling requirements for dormancy release and heat requirements for flowering were studied for three successive years in eleven Prunus salicina L. cultivars that spanned the range of flowering times in this species. ...Read more >
The chilling requirements for dormancy release and heat requirements for flowering were studied for three successive years in eleven Prunus salicina L. cultivars that spanned the range of flowering times in this species. Different methods for estimating chilling requirements were evaluated and compared, and correlations between chilling requirements, heat requirements and flowering date were established. The cultivars examined showed a range of chilling requirements (chill units, CU), spanning from 334.3 CU (‘Pioneer’) to 987.5 CU (‘Songold’). The heat requirements for flowering ranged between 5990 and 9228 growing degree hours. The chilling requirements were significantly different among cultivars, whereas no cultivar effect was found for the heat requirement values. In addition, chill portions were the variable that correlated the most with flowering date in Japanese plum. The dissection of flowering date into chilling and heat requirements indicates that chilling requirements is the main variable driving the variation of flowering time within Japanese plum cultivars.Read less <
Keywords
Environment
Prunus salicina
English Keywords
Dormancy
Adaptation
Chilling requirements
Heat requirements
Flowering
Origin
Hal importedCollections