Morphological and Phenological Responses of Eragrostis plana Nees and Eragrostis pilosa (L.) P. Beauv. Plants Subjected to Different Soil Moisture Conditions

IF 0.8 Q3 Agricultural and Biological Sciences
B. W. Carloto, G. A. Buriol, S. Dornelles, V. S. Trivisiol, M. Peripolli, O. Escobar
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引用次数: 5

Abstract

ABSTRACT: Experiments were run in a greenhouse where samples of Eragrostis pilosa and Eragrostis plana, species that infest rice crops, were subjected to three soil moisture conditions (50% of soil water retention capacity (WRC), 100% of WRC, 10 cm water depth), simulating three different environments (upland, lowland and irrigated rice farm, respectively), with the aim of studying how these conditions affect the morphology and vegetative cycle of these plants, by means of development and growth assessments. Results show that each species responds differently when subjected to varying amounts of water in the soil. Soaking the soil with 10 cm of water was the treatment that most negatively influenced the development of E. plana plants, reducing the formation of panicles per plant, as well as the aerial part dry mass. The responses of E. pilosa plants to the waterlogged environment manifested as reductions in tillering parameters, number of panicles per plant, root and aerial part dry mass, changes in flag leaf formation, and vegetative cycle increases, which allows inferring that these plants are more sensitive to hypotoxic environments. Thus, the water depth treatment is possibly what caused negative effects on the development of the study plants, which indicates that water management in irrigated rice farming is of uttermost importance for management of invasive plants.
扁叶Eragrostis plana Nees和毛叶Eragrustis pilosa(L.)P.Beauv。不同土壤水分条件下的植物
摘要:实验是在温室中进行的,在温室中,对水稻作物中常见的毛叶Eragrostis pilosa和平坦Eragrosti plana的样本进行了三种土壤水分条件(50%土壤保水能力、100%土壤保水容量、10cm水深)的模拟,模拟了三种不同的环境(分别为高地、低地和灌溉稻田),目的是通过发育和生长评估来研究这些条件如何影响这些植物的形态和营养周期。结果表明,当土壤中的水分含量不同时,每个物种的反应都不同。用10cm的水浸泡土壤是对涡虫植物发育影响最大的处理,减少了单株圆锥花序的形成和地上部分干物质。毛叶涡虫植物对积水环境的反应表现为分蘖参数、单株圆锥花序数量、根和地上部干物质的减少,旗叶形成和营养周期增加的变化,可以推断这些植物对低氧环境更敏感。因此,水深处理可能对研究植物的发育产生负面影响,这表明灌溉水稻种植中的水管理对入侵植物的管理至关重要。
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来源期刊
Planta Daninha
Planta Daninha Agricultural and Biological Sciences-Plant Science
自引率
0.00%
发文量
0
审稿时长
16 weeks
期刊介绍: Planta Daninha is a scientific journal published by the Brazilian Society of Weed Science (SBCPD - Sociedade Brasileira da Ciência das Plantas Daninhas). Papers submitted for publication must be sent through an electronic system, on http://www.scielo.br/pd. Works may be written in Portuguese, English, or Spanish, and will be accepted after being reviewed and approved by the Editorial Board. Only papers that have not been published or submitted for publication in other media will be accepted. Articles in Portuguese will be translated to English after being properly corrected and authorized by the authors. Planta Daninha has with goal to publish genuine technical-scientific papers and literature reviews from a critical perspective on Biology, weed management, and related topics.
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