Occurrence and duration of phenological phases of Freesia x hybrida grown at different planting dates

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research 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

Abstract

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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不同种植期小苍兰物候期的发生及持续时间

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。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.