紫花苜蓿品种耐盐性

Q4 Environmental Science

IRRIGA Pub Date : 2023-03-30 DOI:10.15809/irriga.2023v28n1p1-21

Rodrigo Moura e Silva, Welson Lima Simões, Miguel Julio Machado Guimarães, Juliane Rafaele Alves Barros, Kaio Vinicius Fernandes Barbosa, Francislene Angelotti

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引用次数: 0

摘要

本研究的目的是评估苜蓿品种的耐盐性，旨在将其纳入使用高含盐量水进行灌溉或盐碱地的生产系统中。试验采用3x5x3析因方案，在温室内设置3个苜蓿品种(LE-N4、Crioula和DK-192)， 5个盐度水平(0;3.5;5.0;7.0;10 .5和14.0 dS m-1)，空中部分3个芽，重复4次。为了灌溉管理，安装了渗水计。分析了鲜干地上部和根部生物量、叶绿素、水分利用效率和酶活性。盐度的增加降低了地上鲜干生物量、根系生物量、叶绿素和水分利用效率。盐度改变了被试品种的生化反应。DK-192的地上鲜、干生物量产量较高。LE-N4对盐胁迫更为敏感，在7.0 dS - m-1盐度水平下显著降低产量。盐胁迫条件下，Crioula和DK-192过氧化氢酶活性的提高有助于提高地上鲜、干生物量的产量。

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TOLERANCE OF ALFALFA VARIETIES SUBJECTED TO SALINITY

The aim of this study was to evaluate the salinity tolerance of alfalfa varieties, aiming at their inclusion in production systems that use water with high levels of salts for irrigation or saline soils. The experiment was conducted in a greenhouse, in a 3x5x3 factorial scheme, three alfalfa varieties (LE-N4, Crioula and DK-192), five salinity levels (0; 3.5; 5.0; 7.0; 10 .5 and 14.0 dS m-1) and three shoots of the aerial part, with four repetitions. For irrigation management, lysimeters were installed. Fresh and dry aboveground and root biomass, chlorophyll, water use efficiency and enzymatic activity were analyzed. The increase in salinity reduced fresh and dry aboveground and root biomass, chlorophyll and water use efficiency. Salinity altered the biochemical responses of the evaluated varieties. DK-192 showed higher production of fresh and dry aboveground biomass. LE-N4 was more sensitive to salt stress, significantly reducing production from a salinity level of 7.0 dS m-1. The increased catalase activity for Crioula and DK-192 under salt stress conditions contributed to the higher production of fresh and dry aboveground biomass.

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来源期刊

IRRIGA Environmental Science-Water Science and Technology

CiteScore

0.70

自引率

0.00%

发文量

期刊介绍： A Revista IRRIGA é destinada a publicar trabalhos originais e que contribuam para o desenvolvimento cientifico da agricultura em português, espanhol, preferivelmente em inglês, nas áreas de Irrigação, Drenagem, Hidrologia, Agrometeorologia, Relações Solo-Água-Planta-Atmosfera e Reuso de Água. IRRIGA is a Scientific Journal edited by Agricultural Science College-UNESP, devoted to the publication of original scientific papers in English or Portuguese or Spanish, within the topics: Irrigation, Drainage, Agrometeorology, Hydrology, Waste Water and Soil-Water-Plant-Atmosphere Relationships.