Physical and physiological quality of corn seeds

Ítala Thaísa Padilha Dubal,Lanes Beatriz Acosta Jaques,Ivan Ricardo Carvalho,Vinícius Jardel Szareski,Giordano Gelain Conte,João Roberto Pimentel,Cristian Troyjack,Tiago Zanatta Aumonde,Francisco Amaral Villela,Tiago Pedó

doi:10.33448/rsd-v9i10.8687

Abstract

The aimed to evaluate the physical and physiological quality, as well the field initial performance of different maize seeds size, produced in two growing environments. It were used seeds of the Amarelo maize (Zea mays L.) genotype, where it were produced in two growing environments at Rio Grande do Sul, in the crops season of 2016/2017. The environment that the seeds are produced and the seeds form affect the maize plants initial growth. Flat seeds are tend to have a better performance on field in relation to the initial growth. The seedlings originated from Entre Ijuís-RS present superiority to shoot length, stem diameter, roots dry matter and shoot dry matter, while Pelotas-RS determines the sieves yield. The round and small seeds present lower sieves yield, shoot length, root length and stem diameter of maize seedlings.

Highlights

In order to obtain high quality seeds, an adequate management must be realized in the production fields and the correct harvest timing
The aimed to evaluate the physical and physiological quality, as well the field initial performance of different maize seeds size, produced in two growing environments. It were used seeds of the Amarelo maize (Zea mays L.) genotype, where it were produced in two growing environments at Rio Grande do Sul, in the crops season of 2016/2017
Flat seeds are tend to have a better performance on field in relation to the initial growth

Summary

Introduction

In order to obtain high quality seeds, an adequate management must be realized in the production fields and the correct harvest timing. It is necessary to maintain a rigorous inspection, in this manner avoiding low vigor seeds to be sown. The vigor is an attribute that defines the seed performance level in the germination and seedlings emergence (Tillmann & Menezes, 2012) and it is controlled by distinct mechanisms, at unfavorable environments (Miransari & Smith, 2014). The quality decrease is related to the germination low percentage, increase of abnormal seedling and seedling vigor reduction (Toledo et al, 2009). The increase in the high vigor seeds percentage, in a determined seeds lot, is favorable to the initial growth of the maize crop (Mondo et al, 2013).

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