Morpho-physiological and anatomical characteristics of Urochloa brizantha cv. Marandu in silvopastoral and monoculture systems

Q3 Agricultural and Biological Sciences
L. F. Sousa, G. R. Moreira, José Pires de Lemos Filho, D. S. Paciullo, J. Vendramini, R. Luna, R. M. Maurício
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引用次数: 0

Abstract

To gain insights into the forage morphological and anatomical characteristics in a silvopastoral system (SPS) with Bolsa de Pastor (Zeyheria tuberculosa) and palisadegrass ‘Marandu’ (Urochloa brizantha) monoculture (MONO). The SPS was established through natural regeneration of the tree species. Treatments were a SPS and MONO distributed in a completely randomized design with six replicates and repeated measures were the harvest periods. Response variables were morpho-physiological and anatomical characteristicss: green: dead material ratio, leaf blade: stem+sheath ratio, leaf area index, chlorophyll and carotenoid concentrations, proportions of non-lignified and achlorophyllous areas, lignified areas in stems, proportions of non-lignified and achlorophyllous areas, lignified and chlorophyllous areas in leaves, as well as cell length in longitudinal section of stem. Morpho-physiological patterns were altered (p < 0.05) under natural shading conditions due to higher photosynthetic efficiency in the SPS. There was no effect (p > 0.05) of the systems on anatomical patterns, proportions of non-lignified and achlorophyllous, lignified and chlorophyllous tissues, these proportions were influenced only by the periods of the year, both for stems and leaves. Cells of the internodes of the grasses of the studied systems had the same length. The SPS alters morpho-physiological characteristics of palisadegrass and increases the concentration of chlorophyll a and b.
棘尿chloa brizantha cv.形态生理解剖特征。在森林和单一栽培系统中的马兰度
摘要目的:探讨单栽培(MONO)和单栽培(Zeyheria tuberlosa)的林牧系统(SPS)牧草的形态和解剖特征。SPS是通过对该树种的自然更新而建立的。处理为SPS和MONO,采用完全随机设计,6个重复,重复测量为采收期。响应变量为形态生理解剖特征:绿:死物质比、叶片:茎+鞘比、叶面积指数、叶绿素和类胡萝卜素浓度、非木质化和绿叶化面积比例、茎中木质化面积、非木质化和绿叶化面积比例、叶中木质化和绿叶化面积比例、茎纵断面细胞长度。在自然遮荫条件下,由于SPS的光合效率较高,其形态生理模式发生了改变(p < 0.05)。不同体系对茎叶解剖形态、非木质化和无叶绿素组织比例、木质化和有叶绿素组织比例均无显著影响(p > 0.05),这些比例仅受季节的影响。不同体系的禾本科节间细胞长度相同。SPS改变了栅栏草的形态生理特征,增加了叶绿素a和b的浓度。
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来源期刊
Acta Scientiarum. Animal Sciences
Acta Scientiarum. Animal Sciences Agricultural and Biological Sciences-Food Science
CiteScore
1.60
自引率
0.00%
发文量
45
审稿时长
9 weeks
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