相关实验视频
Updated: Jun 14, 2025

08:42
Forced Flowering in Mandarin Trees under Phytotron Conditions
Published on: March 6, 2019
9.0K
一个层次模型,用天气数据和芽动态来预测基维果的开花时间
Jingjing Zhang1, Maryam Alavi1, Lindy Guo1
1The New Zealand Institute for Plant and Food Research Limited, Private Bag 92169, Auckland 1142, New Zealand.
Plants (Basel, Switzerland)
|August 29, 2024
概括
预测果的开花时间对于果园管理至关重要. 这项研究开发了一种使用芽和生长度日 (GDD) 准确预测开花的模型,有助于害虫控制和授粉.
科学领域:
- 园艺园艺 园艺园艺
- 植物现象学 植物现象学
- 农业气象 农业气象学
背景情况:
- 准确预测果的开花时间对于有效的果园管理至关重要,包括害虫控制和授粉.
- 目前的方法可能缺乏精度,需要改进的预测工具.
研究的目的:
- 开发和评估一个预测模型,预测果的开花时间.
- 整合气候数据和现象学观测,以提高预测准确度.
主要方法:
- 利用来自"海沃德"和"Zesy002"果研究的历史数据 (2007-2022年).
- 分析了芽和开花时间,与累积热量总和 (增长度日,GDD) 和冷却单位 (CU) 相比.
- 使用气象站数据开发和验证回归模型.
主要成果:
- 确定了一个层次模型结构,其中芽时的GDD积累是开花时间的关键预测因素.
- 该模型在使用综合气候和现象学数据预测开花时间方面表现出有效性.
- 2020-2022年的验证数据证实了该模型的预测能力.
结论:
- 将气候数据与芽等现象学事件相结合,显著提高了果开花时间的可预测性.
- 开发的模型是优化基维果园管理实践的宝贵工具.
- 这种方法支持对疾病控制,害虫管理和授粉的及时干预.
相关概念视频
Biological Clocks and Seasonal Responses
34.6K
The circadian—or biological—clock is an intrinsic, timekeeping, molecular mechanism that allows plants to coordinate physiological activities over 24-hour cycles called circadian rhythms. Photoperiodism is a collective term for the biological responses of plants to variations in the relative lengths of dark and light periods. The period of light-exposure is called the photoperiod.
34.6K
Light Acquisition
8.4K
In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
8.4K
Survival Tree
73
Survival trees are a non-parametric method used in survival analysis to model the relationship between a set of covariates and the time until an event of interest occurs, often referred to as the "time-to-event" or "survival time." This method is particularly useful when dealing with censored data, where the event has not occurred for some individuals by the end of the study period, or when the exact time of the event is unknown.
Building a Survival Tree
Constructing a...
Building a Survival Tree
Constructing a...
73
Morphogenesis
27.8K
Plant morphogenesis—the development of a plant’s form and structure—involves several overlapping developmental processes, including growth and cell differentiation. Precursor cells differentiate into specific cell types, which are organized into the tissues and organ systems that make up the functional plant.
27.8K

