Photosynthetic performance, lipid peroxidation and morphological aspects of papua exposed to different soil water conditions

Authors

DOI:

https://doi.org/10.5902/2179460X40705

Keywords:

Urochloa plantaginea, Adaptation, Inundation

Abstract

This paper aimed to elucidate the behavior of Urochloa plantaginea biotype with differential physiological characteristics, which allows a better growth and development in a flooded environment. A completely randomized experimental design was used 2x3, being the factors: populations of Urochloa plantaginea (lowlands and highlands) and soil water conditions (50% and 100% of soil water retention capacity (CRA); water depth 5 cm). Responses related to photosynthetic parameters and lipid peroxidation were verified 24h and 192h after the onset of water conditions. Morphology-relatedvariables were measured at the end of the plant cycle. The lowland biotype compared to the highland biotype showed superior morphophysiological characteristics under soil flooding. It can be emphasized, higher water use efficiency (about 30%), higher plant height, lower aerial part lipid peroxidation and higher aerial part dry matter increment. In addition, the lowland biotype was shown not to vary photosynthetic parameters A, Gs, Ci, E, USA and A / Ci when exposed to the water depth 5 cm, compared with the 100%CRA condition. Both populations survived and ended their cycle producing seeds. Thus, apossible adaptive process of the population to the flooded environment is evidenced.

Author Biographies

Leandro Lima Spatt, Universidade Federal de Santa Maria

Atualmente, Engenheiro Agrônomo da empresa Coomat. Mestrando em Agrobiologia pela Universidade Federal de Santa Maria e graduação em agronomia pela mesma instituição. 

Sidinei José Lopes, Universidade Federal de Santa Maria, Santa Maria, RS,

Professor do departamento de fitotecnia da Universidade Federal de Santa Maria. Graduado, mestrado e Doutorado  em Agronomia, sendo o ultimo, pela Universidade de São Paulo. 

Sylvio Henrique Bidel Dornelles, Universidade Federal de Santa Maria, Santa Maria, RS,

Professor do departamento de Biologia da Universidade Federal de Santa Maria, Chefe do Departamento de Biologia/CCNE e líder do Grupo Interdisciplinar de Pesquisa e Herbologia (GIPHE). Graduado, mestrado e Doutorado  em Agronomia, sendo o ultimo, pela Universidade Federal de Santa Maria. 

Vinicius Severo Trivisiol, Universidade Federal de Santa Maria, Santa Maria, RS

Atualmente doutorando do programa pós graduação em agronomia e professor voluntário da disciplina de Fisiologia Vegetal. Possui graduação e  mestrado em Agronomia pela Universidade Federal de Santa Maria.

Mariane Peripolli, Universidade Federal de Santa Maria, Santa Maria, RS,

 Atualmente doutoranda do programa pós graduação em agronomia pela Universidade Federal de Santa Maria. Possui, também, Graduação em Agronomia, Mestrado em Agrobiologia, ambas pela mesma universidade.

Elisandro Azeredo Nunes, Universidade Federal Santa Maria, Santa Maria, RS

Graduando em Agronomia pela Universidade Federal de Santa Maria

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Published

2021-03-01

How to Cite

Spatt, L. L., Lopes, S. J., Dornelles, S. H. B., Trivisiol, V. S., Peripolli, M., & Nunes, E. A. (2021). Photosynthetic performance, lipid peroxidation and morphological aspects of papua exposed to different soil water conditions. Ciência E Natura, 43, e10. https://doi.org/10.5902/2179460X40705

Issue

Section

Biology-Ecology

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