INFLUENCE DE TRAITEMENTS PRÉALABLES AU FROID SUR LA CROISSANCE ET LE DÉVELOPPEMENT DU POINSETTIA

Author:

GAGNON SERGE,DANSEREAU BLANCHE

Abstract

To achieve more rapid adaptation of plants grown under a constant cold night temperature regime, rooted poinsettia (Euphorbia pulcherrima Willd ex. Klotzsch ’Annette Hegg Dark Red’) cuttings were given one of several cold pretreatments (TPF): either 17/13 °C or 13 °C for 5, 10, or 15 d. The influence of these TPF treatments was compared with that of control plants where the night temperature was 17 °C. There was no significant difference for the number of days to the first visible flower buds and to anthesis, for the number of flowering stems and bracts formed, for leaf area and aerial dry weight. However, the TPF treatment of 17/13 °C given for 15 d caused a significant increase in bract area, and of average flower head diameter compared to those plants given a TPF treatment of 13 °C for the same length of time.Key words: Euphorbia pulcherrima, night temperature, split night temperature, pretreatment

Publisher

Canadian Science Publishing

Subject

Horticulture,Plant Science,Agronomy and Crop Science

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3