ORIGINAL ARTICLE
Potential implications to wheat establishment due to negative effects of Eragrostis plana in rhizospheric soil
1
Agronomy, Universidade Federal da Fronteira Sul, Laranjeiras do Sul, Brazil
2
Biology, Universidade Federal da Fronteira Sul, Laranjeiras do Sul, Brazil
3
Biology, Universidade Estadual de Maringá, Maringá, Brazil
4
Agronomy, Universidade Tecnológica Federal do Paraná, Pato Branco, Brazil
A - Research concept and design; B - Collection and/or assembly of data; C - Data analysis and interpretation; D - Writing the article; E - Critical revision of the article; F - Final approval of article
Submission date: 2022-06-08
Acceptance date: 2022-08-29
Online publication date: 2022-10-10
Corresponding author
Henrique von Hertwig Bittencourt
Agronomy, Universidade Federal da Fronteira Sul, Laranjeiras do Sul, Brazil
Agronomy, Universidade Federal da Fronteira Sul, Laranjeiras do Sul, Brazil
Journal of Plant Protection Research 2022;62(4):317-325
HIGHLIGHTS
- There is seasonality in the influence of the rhizospheric soil on the germination and initial development of seedlings;
- The distance of the rhizospheric soil to plant donor tiller base is critical for the germination and seedling development;
- The position of the rhizospheric soil and the season can influence the number of abnormal seedlings and dormant wheat seeds, as well as the size of the seedlings.
KEYWORDS
TOPICS
ABSTRACT
EExotic plants, such as Eragrostis plana in southern Brazil, may cause significant problems
in agriculture. This study aimed to elucidate the influence of E. plana rhizosphere soil on
wheat germination and initial development. Bioassays with soil sampled from an infested
agroecosystem were carried out using wheat as the target species. A factorial design was
used, crossing soil from the horizontal and vertical distances from the E. plana tiller base
and considering seasons as a blocking factor. The interaction between season and vertical
and horizontal soil positions influenced normal wheat seed germination, with the lowest
values (69%) observed in the winter bottom and intermediate soil positions. The highest
abnormal seedling percentage (17.6%) was recorded in the summer middle vertical soil
position. Dormant wheat seeds were higher (7%) in the spring bottom and distal soil posi-
tions. The season was the most important factor for germination, but hypocotyl, radicle,
and total wheat seedling length also varied according to soil position. Shorter hypocotyls
and seedlings were registered in the summer soil surface, while shorter radicles were ob-
served in the proximal horizontal soil position in the same season. This variable response
of wheat germination and seedling development to the infested soil demonstrated E. plana
seasonality. The influence also varied according to the distance from the plant tiller base.
These findings may be used to improve E. plana management in infested fields and to un-
derstand the mechanism of action of its allelochemicals in future research.
RESPONSIBLE EDITOR
Natasza Borodynko-Filas
CONFLICT OF INTEREST
The authors have declared that no conflict of interests exist.
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| eISSN: | 1899-007X |
| ISSN: | 1427-4345 |
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