Effects of VC and VB2 Solution Treatment on Field Seedling Emergence Rate
Seed quality is the decisive factor in seedling cultivation. Seed vigor is a comprehensive index for evaluating seed quality. It is mainly used to evaluate the stress resistance, seedling emergence rate, and uniformity of seed in field. Before seed vigor determination, we need to first identify the seed quality, including 1000-seed weight, seed clarity analysis, seed moisture content determination and seed germination rate determination. These parameters are the most important aspects of seed quality. Seed winnowers are commonly used to determine the clarity of seeds for the initial deletion of seeds, the seed clarity table is used for the analysis of seed clarity, and the seeds are counted. Instrument for 1000-grain weight determination of seeds.
When all the above parameters are determined, the resulting seed is a seed with a certain quality grade. Such seeds are more suitable for practical use. In addition, the seed's vigor gradually decreases during storage. At this time, using a certain concentration of VC and folic acid to treat peas can increase the vitality of seeds and seedlings.
The concentration of VC and VB2 solution was 0-500mg/kg. With the increase of the solution concentration, the seedling emergence rate of Phoebe bungeana seed was gradually increased. When the concentration reached 500mg/kg, the seedling emergence rate of Phoebe bungeana seed was the highest, which was 46.8. % and 43.4%. After that, the concentration of VC and VB2 solution was further increased, and the seedling emergence rate of Phoebe bungeanum no longer increased. The seedling emergence rate in the field is a reflection of seed stress resistance. With high seedling emergence rate in the field, the seed has strong resistance to stress, has strong adaptability to adverse environmental conditions, and has high seed vigor. Through the research, we found that: When the seeds of Phoebe bournei with reduced vigor are treated with VC and VB2 solution, the vigor is obviously recovered and improved, and the seedling emergence rate in the field has increased obviously.
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