Determination of Chilling and Heat Requirements of Pistachio (Pistacia vera L.) Cultivars

作     者：Majid Rahemi Zahra Pakkish 

作者机构：Department of Horticultural Science Shiraz University Department of Horticultural Science Shahid Bahonar University 

出 版 物：《Agricultural Sciences in China》 (中国农业科学（英文版）)

年 卷 期：2009年第8卷第7期

页      面：803-807页

核心收录：

学科分类：09[农学] 0902[农学-园艺学] 090201[农学-果树学] 

主　　题：chilling requirement heat requirement pistachio 

摘      要：Determination of chilling and heat requirements of pistachio （Pistacia vera L.） cultivars is important for satisfactory growth and development, particularly when large-scale commercial production is desired. This experiment was conducted to determine chilling requirement inducing vegetative and flower buds of Kalle-Ghuchi, Owhadi, Ahmad-Ahgaei, and Akbari pistachio. Shoots with enough vegetative and flower buds were taken from pistachio trees during autumn 2007 and 2008 when temperature reached to 15°C. Cuttings with flower buds were kept under （5 ± 1）°C for 0, 600, 650, 700, 750, 800, 850, 900, 950, 1 000, 1 050, 1 100, 1 150, 1 200, 1 250, and 1 300 h, respectively, and cuttings with vegetative buds were kept at 51°C until 1 500 h. The results indicated that pistachio cultivars requite chilling time between 750-1 400 h and heat requirements between 8 852-15 420 growing degree hours （GDH）. Consequently, Kalle-Ghuchi had the lowest chilling （750-950 h）, and heat （8 852-9 768 GDH） requirements, Ahmad-Aghaei and Owhadi had intermediate （1 000-1 250 h, 10 656- 13 320 GDH） and Akbari had the highest chilling （1 200-1 400 h） and heat （11 863-15 420 GDH） requirement.