{"title":"光强和赤霉素对四种观赏植物幼苗生产的影响","authors":"Ketlyn Custodio Jung, Alexandre Hack Porto, Alberto Ricardo Stefeni, Wellyton Morgenrotd, Américo Wagner Júnior","doi":"10.18188/sap.v21i1.27565","DOIUrl":null,"url":null,"abstract":"Ornamental species, especially those involving the use of seedlings in trays to serve residential gardens, need to be produced quickly for commercialization, which requires studies that provide such a condition. The present work aimed to evaluate the effect of light intensity and exogenous application of gibberellin on seedlings of four ornamental species (Calendula officinalis, Gypsophila elegans, Solenostemon scutellarioides and Viola wittrockiana). The experiment was carried out at the Universidade Tecnológica Federal do Paraná, Campus Dois Vizinhos. The seeds were sown in trays containing substrate composed of a mixture of humic Distroferric Red Latosol: medium texture sand: commercial substrate, in the volumetric proportion of 2:1:1, respectively. The trays were kept in shading environments, using black screens with 35%, 50% and 80% shading intensity, red with 35% shading, in addition to full sun. After 30 days of emergence, gibberellic acid solution was applied to the seedlings at concentrations of 0 mg L-1 and 300 mg L-1. Emergence, emergence speed index, mean emergence time, total length, shoot and roots, number of leaves, leaf area, root volume density, shoot, root and total dry matter were evaluated. For each environmental condition of cultivation, the values of temperature and air humidity and light intensity were obtained. The use of gibberellic acid proved to be beneficial for Viola wittrockiana and Solenostemon scutellarioides. The shading environments, regardless of color and light intensity, were more favorable for the formation of seedlings of these four ornamental species.","PeriodicalId":30289,"journal":{"name":"Scientia Agraria Paranaensis","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2022-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Light intensity and giberelic acid in the seedling\\\\production of four ornamental species\",\"authors\":\"Ketlyn Custodio Jung, Alexandre Hack Porto, Alberto Ricardo Stefeni, Wellyton Morgenrotd, Américo Wagner Júnior\",\"doi\":\"10.18188/sap.v21i1.27565\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Ornamental species, especially those involving the use of seedlings in trays to serve residential gardens, need to be produced quickly for commercialization, which requires studies that provide such a condition. The present work aimed to evaluate the effect of light intensity and exogenous application of gibberellin on seedlings of four ornamental species (Calendula officinalis, Gypsophila elegans, Solenostemon scutellarioides and Viola wittrockiana). The experiment was carried out at the Universidade Tecnológica Federal do Paraná, Campus Dois Vizinhos. The seeds were sown in trays containing substrate composed of a mixture of humic Distroferric Red Latosol: medium texture sand: commercial substrate, in the volumetric proportion of 2:1:1, respectively. The trays were kept in shading environments, using black screens with 35%, 50% and 80% shading intensity, red with 35% shading, in addition to full sun. After 30 days of emergence, gibberellic acid solution was applied to the seedlings at concentrations of 0 mg L-1 and 300 mg L-1. Emergence, emergence speed index, mean emergence time, total length, shoot and roots, number of leaves, leaf area, root volume density, shoot, root and total dry matter were evaluated. For each environmental condition of cultivation, the values of temperature and air humidity and light intensity were obtained. The use of gibberellic acid proved to be beneficial for Viola wittrockiana and Solenostemon scutellarioides. The shading environments, regardless of color and light intensity, were more favorable for the formation of seedlings of these four ornamental species.\",\"PeriodicalId\":30289,\"journal\":{\"name\":\"Scientia Agraria Paranaensis\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2022-03-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Scientia Agraria Paranaensis\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.18188/sap.v21i1.27565\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Scientia Agraria Paranaensis","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.18188/sap.v21i1.27565","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
观赏物种,特别是那些涉及到在托盘中使用幼苗服务于住宅花园的观赏物种,需要快速生产以实现商业化,这需要研究提供这样的条件。研究了不同光照强度和外源赤霉素对金盏菊(Calendula officinalis)、菖蒲(Gypsophila elegans)、黄芩(Solenostemon scutelloides)和堇菜(Viola wittrockiana)幼苗生长的影响。该实验在Dois Vizinhos校园的Tecnológica Federal do paranade universade进行。种子播种于托盘中,托盘中基质由腐殖质分布铁红红壤:中等质地砂:商品基质组成,体积比例分别为2:1:1。托盘放置在遮阳环境中,除充分日照外,还使用遮阳强度为35%、50%和80%的黑色屏风,遮阳强度为35%的红色屏风。出苗30 d后,分别用浓度为0 mg L-1和300 mg L-1的赤霉素溶液浇灌幼苗。对出芽、出芽速度指数、平均出芽时间、总长度、茎和根、叶数、叶面积、根体积密度、茎、根和总干物质进行了评价。得到了不同栽培环境条件下的温度、空气湿度和光照强度。赤霉素酸的使用对堇菜和黄芩有一定的促进作用。无论颜色和光照强度如何,遮荫环境都更有利于观赏植物幼苗的形成。
Light intensity and giberelic acid in the seedling\production of four ornamental species
Ornamental species, especially those involving the use of seedlings in trays to serve residential gardens, need to be produced quickly for commercialization, which requires studies that provide such a condition. The present work aimed to evaluate the effect of light intensity and exogenous application of gibberellin on seedlings of four ornamental species (Calendula officinalis, Gypsophila elegans, Solenostemon scutellarioides and Viola wittrockiana). The experiment was carried out at the Universidade Tecnológica Federal do Paraná, Campus Dois Vizinhos. The seeds were sown in trays containing substrate composed of a mixture of humic Distroferric Red Latosol: medium texture sand: commercial substrate, in the volumetric proportion of 2:1:1, respectively. The trays were kept in shading environments, using black screens with 35%, 50% and 80% shading intensity, red with 35% shading, in addition to full sun. After 30 days of emergence, gibberellic acid solution was applied to the seedlings at concentrations of 0 mg L-1 and 300 mg L-1. Emergence, emergence speed index, mean emergence time, total length, shoot and roots, number of leaves, leaf area, root volume density, shoot, root and total dry matter were evaluated. For each environmental condition of cultivation, the values of temperature and air humidity and light intensity were obtained. The use of gibberellic acid proved to be beneficial for Viola wittrockiana and Solenostemon scutellarioides. The shading environments, regardless of color and light intensity, were more favorable for the formation of seedlings of these four ornamental species.