کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5002452 1368453 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Complexity of Chlorophyll Fluorescence Dynamic Response as an Indicator of Excessive Light Intensity*
ترجمه فارسی عنوان
پیچیدگی پاسخ دینامیکی فلوروفل فلورسانس به عنوان نشانگر شدت نور بیش از حد *
کلمات کلیدی
فتوسنتز، فلورسانس، گیاه شناسی، پاسخ گام به گام، رفتار پویا، شناسایی سیستم، توسعه روش، کنترل بازخورد
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مکانیک محاسباتی
چکیده انگلیسی
The controllability of LED lighting systems for greenhouses and plant factories offers a possibility for light induced diagnose of plant status. Here, a novel method for proximal remote detection of plant light tolerance is investigated. The method is based on an identification of a transfer function model for the measured chlorophyll fluorescence response to a small step variation in blue LED light. It is postulated that the least required model order decreases as the plants become light stressed due to saturation effects at excess light conditions. We apply this method to basil and lettuce plants under different background light intensities, and the results are compared to measured effective quantum yield (y(II)), relative electron transport rate through PSII (ETR(II)) and non-photochemical quenching (NPQ), all reflecting the photosynthetic performance. For both species it is indeed found that the required model order decreases with increasing background light intensity at the same time as the measured reference parameters indicates a decreased photosynthetic efficiency. It is suggested that the light intensity should be such that the chlorophyll fluorescence response requires a model order of 3 or higher to avoid ineffective irradiation of the plants.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: IFAC-PapersOnLine - Volume 49, Issue 16, 2016, Pages 392-397
نویسندگان
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