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1.
J Environ Biol ; 2019 May; 40(3): 377-383
Artículo | IMSEAR | ID: sea-214566

RESUMEN

Aim: A study was conducted to evaluate the salinity tolerance of white jute (C. capsularis) cultivars. Methodology: Five white jute cultivars were assessed for different salinity concentrations (0, 100, 150, 200 and 250 mM NaCl) in a split plot design with three replications per concentration under greenhouse condition. A total of fifteen plants were sampled from each treatment ten days after treatment with NaCl to determine morphological and physiological parameters. Results: Increased NaCl concentrations reduced all the morphological and physiological parameters such as plant height, root length, number of leaves, leaf area, shoot and root dry weight, relative leaf water content (RLWC), chlorophyll, protein, proline content, K+ accumulation in shoot and leaves, but water saturation deficit (WSD) and Na+ contents were increased in the shoot and leaves. Interpretation: The study revealed that among all cultivars assessed JRC-532 and JRC-321 showed relatively better performance against salt stress whereas cultivar JRC-517 was found more susceptible to salt stress.

2.
Biosci. j. (Online) ; 34(6 Supplement 1): 131-140, nov./dec. 2018.
Artículo en Inglés | LILACS | ID: biblio-968878

RESUMEN

The knowledge of micronutrients for Jute (Corchorus capsularis L.) plants might be a valuable tool to the subsidize taking of decisions to the management of such species. The objective of this study was to describe the symptoms of micronutrient deficiencies in jute plants and to analyze micronutrient contents in leaves, stems, and roots. The experiment was carried out in a greenhouse, with six treatments and four replications in a randomized block design. The treatments were, as follows: Complete solution (C) and solution with the omission of the following nutrients: B, Cu, Fe, Mn, and Zn. Except for Cu deficiency, the morphological alterations were easily characterized for all nutrients evaluated, in which Fe and Zn were the first and the last to cause symptoms in plants, respectively. In general, the nutrients that were most limiting to the growth of Jute plant and for dry mass were Fe and B. The omission of B, Mn and Fe limited root growth while the Zn and Cu deficiencies limited the growth of the aerial part. The nutrient contents were ordered as it follows: Fe> Mn> Zn> B> Cu in the leaves, Fe> Mn> B> Zn> Cu in the stem and Fe> Zn> Mn> B> Cu in the roots. For seedings of Jute, the deficiency of Fe and B are the most limiting and the suitable nutritional contents for those seedlings are 11.37; 8.99; 346.14; 248.88 and 77,28 mg.kg-1 for B, Cu, Fe, Mn and Zn in the leaves, respectively.


O conhecimento acerca de micronutrientes em plantas de juta (Corchorus capsularis L.) pode ser uma importante ferramenta para subsidiar tomadas de decisão quanto ao manejo de tal espécie. O objetivo do presente estudo foi descrever os sintomas de deficiência de micronutrientes em plantas de juta e analisar o teor de micronutrientes contidos em folhas, caules e raízes. O experimento foi conduzido em casa de vegetação, com seis tratamentos e quatro repetições para cada tratamento em delineamento em blocos ao acaso. Os tratamentos foram: solução completa (C) e solução com a omissão dos seguintes nutrientes: B, Cu, Fe, Mn e Zn. Com exceção da deficiência de Cu, as alterações morfológicas foram fáceis de caracterizar para todos os nutrientes analisados, com Fe e Zn sendo o primeiro e o último a causar sintomas em plantas, respectivamente. Em geral, os nutrientes que foram os mais limitantes para o crescimento e matéria seca de juta foram Fe e B. A omissão de B, Mn e Fe limitou o crescimento radicular, enquanto que a deficiência de Zn e Culimitou o crescimento da parte aérea. O teor de nutrientes seguiu a seguinte ordem decrescente: Fe> Mn> Zn> B> Cu nas folhas, Fe> Mn> B> Zn> Cu no caule e Fe> Zn> Mn> B> Cu nas raízes. Pra mudas de juta, a deficiência de Fe e B são as mais limitantes e os teores nutricionais adequados para estas mudas são 11,37; 8.99; 346.14; 248.88; and 77.28 mg.kg-1, respectivamente, para B, Cu, Fe, Mn and Zn nas folhas.


Asunto(s)
Plantas , Micronutrientes , Corchorus , Deficiencia de Minerales , Desarrollo de la Planta
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