Performance of wheat varieties grown from seeds with different vigor levels

Tiago Pedó,Manoela Andrade Monteiro,Emanuela Garbin Martinazzo,Felipe Koch,Jessica Mengue Rolim,Tiago Zanatta Aumonde

doi:10.1590/0034-737x202269010014

Tiago Pedó, Manoela Andrade Monteiro + Show 4 more

Open Access

https://doi.org/10.1590/0034-737x202269010014

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Abstract

The objective of this study was to evaluate the performance of wheat plant grown from seeds with different vigor levels. The experimental design was randomized blocks in a 3 x 3 factorial design (cultivar x vigor level) with four replications. The wheat cultivars were Tbio Toruk, Tbio Mestre and Tbio Iguaçu. The classification of vigor levels was high, medium and low, determined by several vigor procedures. The following evaluations were performed: plant height, number of spikelets in the main tiller, number of seeds in the main tiller, seed mass in the main tiller, number of fertile tillers, number of seeds in tillers, seed mass in tillers, number of plants.m-2, number of spikes.m-2, and grain yield per hectare. The use of high vigor seeds provides a greater number of wheat plants and spikes per area. Grain yield is affected significantly by seed vigor level: there is an increase of up to 11% by using high vigor seeds compared to low vigor seeds.

Highlights

Wheat (Triticum aestivum L.) is one of the most relevant crops in the world, considered among winter cereals as one of the species that has the greatest economic relevance (Takeiti, 2015).In Brazil, production is concentrated in the Southern region, which is responsible for more than 90% in the country total wheat production
According to França-Neto et al (2016), the use of high vigor seed lots is highly recommended, aiming to ensure an adequate population of plants even when under stress conditions, which ensures crop productivity
The use of low vigor seeds negatively affects the establishment of wheat plant stands

Summary

Introduction

Wheat (Triticum aestivum L.) is one of the most relevant crops in the world, considered among winter cereals as one of the species that has the greatest economic relevance (Takeiti, 2015).In Brazil, production is concentrated in the Southern region, which is responsible for more than 90% in the country total wheat production. One of the factors that cause this situation is low crop productivity (Conab, 2019) In this context, the country has an interest in increasing the production of wheat, because in addition to the demand for grains, the cultivation of the cereal contributes to the supply of mulch for the production of summer crops such as soybeans and corn (Conab, 2017). In order to explore the potential for wheat and to meet domestic demand in Brazil, adequate crop management strategies, promising genotypes and high quality seeds are needed (Abati et al, 2017). In this sense, seed quality is defined by the sum of its genetic, physical, physiological, and sanitary attributes (Peske et al, 2019). Among the attributes of physiological quality, vigor is highlighted as extremely important as it is directly related to germination, emergence and seedling growth rates in the field, influencing the yield of several crops (Rossi et al, 2017)

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