Anatomical traits and structural components of peduncle associated with lodging in Avena sativa L.
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Kuupäev
2021
Kättesaadav alates
Autorid
Silveira, D.C.
Pelissoni, M.
Buzatto, C.R.
Scheffer-Basso, S.M.
Ebone, L.A.
Machado, J.M.
Lângaro, N.C.
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Abstrakt
Lodging dramatically reduces the yield of cereals and increases the difficulty of
mechanical harvesting. Because it is a complex phenomenon, new cultivars with genetic
resistance to lodging is a sustainable alternative in agricultural production systems. This
resistance is associated with a combination of factors, such as stem thickness and stiffness, being
closely linked to anatomical traits and structural carbohydrates present in the stem. In the present
study we compared, under field conditions, eight contrasting oat cultivars in terms of lodging
resistance. Our aim in this study was to investigate the association of anatomical traits and
structural components of the peduncle with resistance to lodging, aiming to assist in the plant
selection process. In addition, a second objective was to understand the genetic dissimilarity
among oat cultivars according to the characters studied. Some characteristics for potential indirect
selection were studied in this work and if correlated with lodging can be used to identify superior
genotypes. From the anatomical point of view, the correlation obtained between the internal
vascular bundle and the lodging resistance factor allowed us to confirm that this trait can be used
in indirect selection to lodging resistance. The structural components of peduncle, in the two ways
explored in the present study, comparison of mean and correlation, did not demonstrate the
potential to be used exclusively as plant selection characters traits for lodging resistance. There
is noticeable variability in oat cultivars for most stem traits.
Kirjeldus
Received: May 14th, 2020 ; Accepted: June 19th, 2020 ; Published: January 5th, 2021 ; Correspondence: diogenessilveira@hotmail.com
Märksõnad
cereal, indirect selection, genetic variability, oat, articles