641 research outputs found
Anatomical traits and structural components of peduncle associated with lodging in Avena sativa L.
Received: May 14th, 2020 ; Accepted: June 19th, 2020 ; Published: January 5th, 2021 ; Correspondence: [email protected] 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
Chapter 16 - Cross-cutting investment and finance issues
This is the first time an assessment report by the Intergovernmental Panel on Climate Change (IPCC) contains a chapter dedicated to investment and finance to address climate change. This reflects the growing awareness of the relevance of these issues for the design of efficient and effective climate policies
Use of whole soy lecithin in diets with energy concentrate from starchy or lipid sources for steers
ABSTRACT Diets with high energy density and additives that enhance energy use are necessary for finishing feedlot cattle. The objective of the present study was to evaluate the performance, ingestive behavior, apparent digestibility of the diet and the carcass traits of feedlot steers fed concentrates from different energy sources, one derived from starchy sources and the other, from lipid sources, combined or not with whole soy lecithin, at a dose of 40 g animal day-1. The experimental design was completely randomized blocks, in a 2 x 2 factorial arrangement. The combination of whole soy lecithin with the lipid energy source concentrate increased the dry matter digestibility and the carcass yield of the animals (76.03% and 57.20%, respectively). The lipid energy source concentrate showed higher ether extract digestibility and animals fed on it had higher carcass yield (84.18% and 56.85%, respectively). Whole soy lecithin promoted a reduction in fecal pH due to a greater fermentation of carbohydrates and fatty acids in the intestinal lumen. Using whole soy lecithin combined with energy concentrate from a lipid source is recommended due to its improvements in the use of the diet and in the carcass yield
- âŠ