New Vigor Methodology in Pearl Millet Seeds

Abstract

The use of high quality seeds is of utmost importance and is intimately related to seed vigor. The objective of this study was to stablish a novel methodology for evaluating the vigor of pearl millet seeds. The experiment was performed at the Federal University of Pelotas, using 5 seed lots of pearl millet cv. BRS1501. The research was carried out in two stages: first, seed lots were characterized (physiological quality tests); second, the initial emergence and development of pearl millet seedlings was evaluated, testing four different substrates and five sowing depths in the emergence test. The experimental set up consisted of a completely randomized design with four replicates. Means were compared by the Scott-Knott test at the 5% probability level. The substrates sand and carbonized rice husk, at 1.0 cm depth, satisfactorily stratified seed lots. These methodologies correlated with the speed of emergency index and seedling emergency. Thus, the study identified an innovative method for testing vigor in pearl millet seeds.

Grape-based residue as a substrate in Oncidium baueri Lindl. acclimatization

“…Furthermore, to these materials, the use of commercial substrates, such as S-10 Beifort ® , can be an option for plant acclimatization. This substrate has grapevine residues (Vitis sp) in its composition and was tested for the germination of papaya (Carica papaya) seeds (Almeida et al, 2020), pearl millet (Pennisetum glaucum) seeds (Suñe et al 2019), and micropropagation of blueberry (Vaccinium corymbosum) (Nadal et al, 2020). However, considering the scarcity of information about its use in the acclimatization of orchids, this study aimed to evaluate the use of S-10 Beifort ® , alone or in mixture with other agricultural residues, in the acclimatization of Oncidium baueri Lindl.…”