LED for faster and better propagation (LED4FaB Roots)

LED 实现更快、更好的传播（LED4FaB Roots）

• 批准号: BB/Z514378/1
• 负责人: James Monaghan
• 金额: $ 36.25万
• 依托单位: Harper Adams University
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2024
• 资助国家: 英国
• 起止时间: 2024 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=BB%2FZ514378%2F1
• 关键词: LED; faster; better; propagation; LED4FaB

UK lettuce and celery crops are produced commercially from transplants - young plants which are propagated in greenhouses before being planted out in the field. A significant proportion of transplants are produced in winter and spring when day lengths are short and greenhouse heating requirements are high. Low ambient light levels in heated greenhouses can lead to reduced quality, stretching and slow growth, taking 6 - 8 weeks from sowing to planting out. G's require 5 - 6 million lettuce and 3 - 4 million celery transplants each year, producing harvested crops worth >£2.5 million. The challenge for salad producers is producing vegetable transplants using reduced energy inputs and having increased quality and resilience to abiotic stress during the post transplanting stage of establishment.This 2-year project would optimise supplementary LED lighting irradiance and spectra for a) improving quality b) shortening production cycles, and c) manipulating root system architecture (RSA) in transplants.During the winter, with low levels of ambient light, plant growth and quality is directly linked to supplementary irradiance across the spectrum that supports photosynthesis (400 - 700 nm). A previous KTP between HAU and G's has manipulated RSA in transplants by varying the ratio between red and blue LED illumination (data not published). This response is not well understood but has the potential to improve efficiency of transplant production across a wide range of crops. A recent PhD at HAU has also suggested that transplants with a greater 'root potential' recover more quickly from shock associated with planting out and may have improved resilience to abiotic stress, such as drought, during establishment and growth in the field.1 This project would study plant growth and RSA development in the greenhouse in response to LED light treatments (spectrum, irradiance, timing and duration) and subsequent plant performance in the field.Genes associated with rooting responses to light have been identified in model organisms.2 We will quantify expression of key rooting genes linked to light-responsive rooting traits under key lighting treatments to better understand the molecular basis of the trait in these crops.The work would enable the selection of light recipes for propagation periods but the response may vary with genotype, limiting efficacy. The project will utilise germplasm from three partner breeders to a) optimise genotype x lighting responses, and b) identify breeding material for future development towards optimised propagation of novel varieties.Potential impactsShortened transplant production cycleReduced heating costsImproved transplant qualityImproved crop qualityIncreased understanding of the molecular basis of root responses to light in crop speciesIdentification of lines and genes of interest for PACE-targeted breeding for improved propagation

英国的生菜和芹菜作物通过移栽进行商业生产——幼苗在田间种植之前在温室中繁殖，很大一部分移栽作物是在冬季和春季生产的，此时日照时间较短且温室供暖要求较高。加热温室中的环境光照水平会导致质量下降、拉伸和生长缓慢，从播种到种植需要 6 - 8 周的时间，G's 需要 5 - 600 万棵生菜和 3 - 400 万棵芹菜。每年进行移植，收获的作物价值超过 250 万英镑。沙拉生产商面临的挑战是使用更少的能源投入来生产蔬菜移植物，并在移植后阶段提高质量和对非生物胁迫的抵抗力。这个为期 2 年的项目将进行优化。补充 LED 照明辐照度和光谱，用于 a) 提高质量 b) 缩短生产周期，以及 c) 操纵移植物中的根系结构 (RSA)。在冬季，环境光水平较低，植物生长和质量受到影响与支持光合作用的整个光谱（400 - 700 nm）的补充辐照度直接相关。HAU 和 G's 之前的 KTP 通过改变红色和蓝色 LED 照明之间的比率来操纵移植中的 RSA（数据未发布）。众所周知，但有潜力提高多种作物的移植生产效率，HAU 最近的一位博士也表明，具有更大“根系潜力”的移植物从种植相关的冲击中恢复得更快。并可能提高在田间定植和生长过程中对非生物胁迫（如干旱）的抵抗力。1 该项目将研究温室中植物生长和 RSA 发育，以响应 LED 光处理（光谱、辐照度、时间和持续时间）和随后植物在田间的表现。与光生根反应相关的基因已在模式生物中得到鉴定。2我们将量化关键光照处理下与光响应生根性状相关的关键生根基因的表达，以更好地了解该性状的分子基础在这些这项工作将能够选择繁殖期的光照配方，但响应可能会随基因型的不同而变化，从而限制了功效。该项目将利用三个合作伙伴育种者的种质来a）优化基因型x光照响应，b）确定育种材料。新品种优化繁殖的未来发展。潜在影响缩短移植生产周期降低加热成本提高移植质量提高作物质量加深对作物根部对光反应的分子基础的了解物种鉴定感兴趣的品系和基因，用于 PACE 靶向育种以改善繁殖