不同种植期小苍兰物候期的发生及持续时间

IF 1.1 Q3 HORTICULTURE Ornamental Horticulture Pub Date : 2023-07-31 DOI:10.1590/2447-536x.v29i2.2568
Melisa Santilli, S. S. Bas-Nahas, Norma N. Medrano
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引用次数: 0

摘要

摘要小苍兰(Freesia x hybrida)是栽培最多的切花品种之一,在国际市场上排名第六。在作物周期中发生的物候过程受内源机制和环境的控制,进而影响发育阶段的持续时间和发生。本研究旨在分析种植日期(2021年2月15日、3月19日、4月16日、5月21日和6月21日)对两个小苍兰品种(Blue Bayou和Yvonne)发育阶段发生和持续时间的影响。试验是在一个高高的隧道里进行的。作物周期分为营养期、生殖期和衰老期。每天都要数树叶的数量。随着种植时间的推迟,生育期明显缩短。蓝B的营养期在2269.78±19.22 ~ 736.50±19.22 GDD之间,Yvonne的营养期在1864.48±19.22 ~ 667.09±19.22 GDD之间。蓝B的生殖期分别为459.50±20.99和379.51±20.99 GDD, Yvonne的生殖期分别为461.43±20.99和487.29±20.99 GDD。只有伊冯的衰老期缩短,栽植日期推迟。栽培时间较晚(5月21日和6月21日)且光照周期延长的植株开花叶片数(7.85±0.10)低于栽培时间较早的植株,诱导温度也较低。向生殖期的过渡是由光周期、温度和植株年龄的相互作用决定的。
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Occurrence and duration of phenological phases of Freesia x hybrida grown at different planting dates
Abstract Freesia (Freesia x hybrida) is one of the most cultivated species of cut flowers, ranking sixth in the international market. Phenological processes occurring during the crop cycle are controlled by endogenous mechanisms and the environment, which in turn influence the duration and occurrence of the development phases. This study aimed to analyze the effect of planting dates (Feb 15, March 19, April 16, May 21, and June 21, 2021) on the occurrence and duration of the development phases of two freesia varieties (Blue Bayou and Yvonne). The trial was conducted in a high tunnel. The crop cycle was divided into vegetative, reproductive, and senescence phases. The number of leaves was counted daily. The development phases were significantly shortened with the delay of planting. The vegetative phase ranged between 2269.78 ± 19.22 and 736.50 ± 19.22 GDD for Blue B., and between 1864.48 ± 19.22 and 667.09 ± 19.22 GDD for Yvonne. The reproductive phase lasted 459.50 ± 20.99 and 379.51 ± 20.99 GDD for Blue B., 461.43 ± 20.99 and 487.29 ± 20.99 GDD for Yvonne. The senescence phase was shortened with delayed planting dates only for Yvonne. Plants cultivated at later dates (May 21, and June 21), and consequently exposed to increased photoperiod, had a lower number of leaves at flowering (7.85 ± 0.10) and were less exposed to inductive temperatures than plants cultivated earlier. The transition to the reproductive phase was determined by the interaction between photoperiod, temperature and plant age.
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来源期刊
Ornamental Horticulture
Ornamental Horticulture Agricultural and Biological Sciences-Horticulture
CiteScore
2.20
自引率
14.30%
发文量
30
审稿时长
50 weeks
期刊介绍: The Journal ORNAMENTAL HORTICULTURE - OH (Revista Brasileira de Horticultura Ornamental) is an official publication of the Brazilian Society for Floriculture and Ornamental Plants (Sociedade Brasileira de Floricultura e Plantas Ornamentais) - SBFPO Short title of the journal: ORNAM. HORTIC. This Journal aim to publish technical and scientific researches in floriculture, ornamental plants, landscaping and landscapes from members of this Society and others. The manuscripts can be submitted in portuguese, but publication must be in English language (U.S.). All the manuscripts submitted to Ornamental Horticulture (Revista Brasileira de Horticultura Ornamental) - OH must not have been submitted or published at the same time, partial or totally, to other journal. It is allowed to read, download, copy, distribute, print, search, or link to parts or the full texts to use them for any other lawful purpose. The reproduction of articles published in this journal is authorized, under the condition that the source is acknowledged.
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