Vigor tests to evaluate the physiological quality of corn seeds cv. 'Sertanejo'

Abstract

Vigor tests to evaluate the physiological quality of corn seeds cv. 'Sertanejo'.Ciência Rural, v.47, n.3, 2017. INTRODUCTIONCorn (Zea mays L.) is an important crop in the world economy whose is characterized by many forms of use, from feeding to the high-tech industry (PICARELLI, 2012). In this context, Brazil has emerged as the third largest producer, behind only the US and China (EMBRAPA MILHO & SORGO, 2012). The use of corn as feed represents the largest share of consumption, about 70% worldwide, and in the United States it represents about 50%, while in Brazil ranges from 70 to 80% used for this purpose; despite low participation in food, generally derivatives from corn has great importance because meet the food demands, especially in regions with low income (PICARELLI, 2012).The use of high quality seeds is the basis for increasing yield, and the physiological component of seed quality has been subject of numerous studies, since the seeds are subjected to a series of degenerative changes after maturity (FREITAS & NASCIMENTO, 2006). Also the use of vigor testing is useful in monitoring the quality of seeds which from the maturity occurs reduction in vigor that precedes the loss of viability (DIAS & MARCOS FILHO, 1995). Vigor tests detect significant differences in physiological quality of seeds with similar germination, providing additional information to those obtained by the germination test, which are classified as direct methods, because they try to simulate the conditions that occur in the field, and indirectly aim to evaluate attributes that are indirectly

Rapid Vitality Estimation and Prediction of Corn Seeds Based on Spectra and Images Using Deep Learning and Hyperspectral Imaging Techniques

“…It is necessary to conduct seed vitality testing to maximize corn production. According to the provisions of the International Seed Inspection Association (ISTA) [4], corn seed vitality can be tested using standard germination tests, accelerated aging tests [5], conductivity tests, tetrazolium staining [6], and other methods. These methods have some shortcomings, such as subjectivity, invasiveness, low specificity, long time-consuming, and low accuracy [7].…”

“…(4) Select the optimal time to make predictions based on the prediction ability under the spectral vitality detection model. (5) Establish a 2DCNN recognition model on the image data and compare its performance with 1DCNN.…”

Qualidade fisiológica de sementes crioulas de milho e feijão de pequenos agricultores de Ituiutaba-MG

“…No trabalho desenvolvido por Silva (2020) avaliando sementes de milho crioulo, percebeu-se que quanto maior o %G, maior o IVG. O milho rural apresentou IVG inferior (1,90), esse parâmetro evidenciou que essa variedade possui menor desempenho fisiológico (Sena, Alves & Medeiros, 2015).…”

Creole bean seeds microbiolization with doses of Trichoderma harzianum

“…The trays were kept in a greenhouse, with two daily irrigations by micro sprinkler system of 2 min and 5-10 min each, one at 10:00 hours and the other at 17:00 hours. A seedling count was performed on the tenth day after the start of the test (SENA et al, 2017).…”