NDLI: Priming and stress under high humidity and temperature on the physiological quality of Brachiaria brizantha cv . MG-5 seeds

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Priming and stress under high humidity and temperature on the physiological quality of Brachiaria brizantha cv . MG-5 seeds

Content Provider	Semantic Scholar
Author	Cardoso, Eliana Duarte Binotti, Flávio Ferreira Da Silva Edilson Costa Sá, Marco De
Copyright Year	2016
Abstract	Palisade grass is a forage plant that is widely used in pasture cropping in the Brazilian savannah. The aim of this experiment was to evaluate palisade grass (Brachiaria brizantha cv. MG–5) seeds subjected to priming and stress at high humidity and temperature (before and after conditioning). The experimental design was completely randomized in a 2x5 factorial arrangement. Seeds were exposed to stress under high humidity and temperature (before and after conditioning) and five priming treatments [Water (Control), potassium nitrate (KNO3) at 0.2%, calcium nitrate Ca(NO3)2 at 0.2%, gibberellin (GA3) at 0.2% and glucose at 10%] with four replications. Two experiments were performed: Experiment I seed with chemical scarification using H2SO4 and Experiment II without scarification. The stress on the seed was applied using artificial aging at 41°C for 96 hours. Seed priming was accomplished by immersion at 25°C for 2 hours. Thereafter, the seeds were oven-dried at 35°C until they regained hygroscopic equilibrium. Seed germination and vigor were evaluated. Priming using KNO3 and Ca(NO3)2 produced seeds with high tolerance to stress under high temperature, and this process is efficient to overcome dormancy.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://www.scielo.br/pdf/asagr/v38n1/1807-8621-asagr-38-01-00123.pdf
Language	English
Access Restriction	Open
Subject Keyword	Avian crop Brachiaria Conditioning (Psychology) Design of experiments Experiment Exposure to Humidity Fever Germination Gibberellins Glucose Immersion (virtual reality) Nash equilibrium Neuritis, Autoimmune, Experimental Nitrates Plant seeds Priming Exercise Random seed Randomized algorithm Seeds (cellular automaton) Urochloa brizantha Vigor (software) calcium nitrate potassium nitrate
Content Type	Text
Resource Type	Article

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