Photo-selective shading screens as a cover for production of purple lettuce

Abstract Photo-selective shading screens are emerging practices that aim to combine crop physical protection with different solar radiation filtration to achieve desired physiological responses. The objective of the present study was to evaluate the effect of photo-selective shading screens on the g...

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Autores principales:	Ramon Amaro de Sales, Evandro Chaves de Oliveira, Eduardo Buzatto, Robson Ferreira de Almeida, Marcus José Alves de Lima, Sávio da Silva Berilli, Ronilda Lana Aguiar, Mario Lovo, Robson Prucoli Posse, Joana Casagrande dos Santos, Waylson Zancanella Quartezani, Rodrigo Amaro de Salles, Felipe Cunha Siman
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/82a16efb45de45f5b025a123b1cac821
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spelling	oai:doaj.org-article:82a16efb45de45f5b025a123b1cac8212021-12-02T17:55:09ZPhoto-selective shading screens as a cover for production of purple lettuce10.1038/s41598-021-94437-52045-2322https://doaj.org/article/82a16efb45de45f5b025a123b1cac8212021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-94437-5https://doaj.org/toc/2045-2322Abstract Photo-selective shading screens are emerging practices that aim to combine crop physical protection with different solar radiation filtration to achieve desired physiological responses. The objective of the present study was to evaluate the effect of photo-selective shading screens on the growth and physiology of purple lettuce for two transplanting seasons in tropical climate in Brazil. A 2 × 4 factorial arrangement was used, being considered the first factor, the transplanting season (spring and fall), and the second factor is the three 35% shading photo-selective shading screens (red, black and silver) and full sun control. The experimental design was a randomized complete block with four replications. The variables studied were: total fresh matter, total dry matter, leaf number, stem diameter, stem length, leaf area, SPAD chlorophyll index, nitrogen balance indexes, chlorophyll, flavonoids and anthocyanins. The photo-selective shading screens influenced the microclimate and the growth variables of purple lettuce, mainly when these plants were sown in the fall. Planting lettuce during spring may result in lower yields due to the higher investment of plants in secondary metabolites to defend against abiotic stress. According to the results, photo-selective shading screens are an appropriate agronomic technique to reduce phenolic compounds and improve lettuce cultivation conditions and can be implemented within protected cultivation practices to improve crop performance.Ramon Amaro de SalesEvandro Chaves de OliveiraEduardo BuzattoRobson Ferreira de AlmeidaMarcus José Alves de LimaSávio da Silva BerilliRonilda Lana AguiarMario LovoRobson Prucoli PosseJoana Casagrande dos SantosWaylson Zancanella QuartezaniRodrigo Amaro de SallesFelipe Cunha SimanNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ramon Amaro de Sales Evandro Chaves de Oliveira Eduardo Buzatto Robson Ferreira de Almeida Marcus José Alves de Lima Sávio da Silva Berilli Ronilda Lana Aguiar Mario Lovo Robson Prucoli Posse Joana Casagrande dos Santos Waylson Zancanella Quartezani Rodrigo Amaro de Salles Felipe Cunha Siman Photo-selective shading screens as a cover for production of purple lettuce
description	Abstract Photo-selective shading screens are emerging practices that aim to combine crop physical protection with different solar radiation filtration to achieve desired physiological responses. The objective of the present study was to evaluate the effect of photo-selective shading screens on the growth and physiology of purple lettuce for two transplanting seasons in tropical climate in Brazil. A 2 × 4 factorial arrangement was used, being considered the first factor, the transplanting season (spring and fall), and the second factor is the three 35% shading photo-selective shading screens (red, black and silver) and full sun control. The experimental design was a randomized complete block with four replications. The variables studied were: total fresh matter, total dry matter, leaf number, stem diameter, stem length, leaf area, SPAD chlorophyll index, nitrogen balance indexes, chlorophyll, flavonoids and anthocyanins. The photo-selective shading screens influenced the microclimate and the growth variables of purple lettuce, mainly when these plants were sown in the fall. Planting lettuce during spring may result in lower yields due to the higher investment of plants in secondary metabolites to defend against abiotic stress. According to the results, photo-selective shading screens are an appropriate agronomic technique to reduce phenolic compounds and improve lettuce cultivation conditions and can be implemented within protected cultivation practices to improve crop performance.
format	article
author	Ramon Amaro de Sales Evandro Chaves de Oliveira Eduardo Buzatto Robson Ferreira de Almeida Marcus José Alves de Lima Sávio da Silva Berilli Ronilda Lana Aguiar Mario Lovo Robson Prucoli Posse Joana Casagrande dos Santos Waylson Zancanella Quartezani Rodrigo Amaro de Salles Felipe Cunha Siman
author_facet	Ramon Amaro de Sales Evandro Chaves de Oliveira Eduardo Buzatto Robson Ferreira de Almeida Marcus José Alves de Lima Sávio da Silva Berilli Ronilda Lana Aguiar Mario Lovo Robson Prucoli Posse Joana Casagrande dos Santos Waylson Zancanella Quartezani Rodrigo Amaro de Salles Felipe Cunha Siman
author_sort	Ramon Amaro de Sales
title	Photo-selective shading screens as a cover for production of purple lettuce
title_short	Photo-selective shading screens as a cover for production of purple lettuce
title_full	Photo-selective shading screens as a cover for production of purple lettuce
title_fullStr	Photo-selective shading screens as a cover for production of purple lettuce
title_full_unstemmed	Photo-selective shading screens as a cover for production of purple lettuce
title_sort	photo-selective shading screens as a cover for production of purple lettuce
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/82a16efb45de45f5b025a123b1cac821
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Photo-selective shading screens as a cover for production of purple lettuce

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