Application of vine tea extract in improving germination rate of deteriorated seeds of rice

Abstract

The invention belongs to the technical field of rice seed priming research, and discloses an application of a vine tea extract in improving the germination rate of deteriorated seeds of hybrid rice. The vine tea extract is a vine tea extract product extracted and obtained by methods such as solvent extraction, ultrasonic extraction or chromatographic separation based on vine tea as a raw material. The product comprises a solid product, a liquid product and a paste product, preferably the solid product. The vine tea extract is a natural plant extract and is free from any toxicity and low in cost, and is free from environmental pollution, and used for initiating safety of seeds of hybrid rice. The vine tea extract has a remarkable effect on initiation of seeds of hybrid rice.

Description

technical field [0001] The invention belongs to the field of rice seed priming technology research, and particularly relates to the application of a vine tea extract in improving the germination rate of deteriorating rice seeds. Background technique [0002] China is a large developing country with a population of more than one billion. Food security has always been an overall major strategic issue related to economic development, social stability and national security. Rice is the main food crop in my country, accounting for more than half of the country's total grain output, and plays an extremely important role in food security. The perennial rice planting area in my country is about 30 million hectares, and the annual seed consumption is quite large. Due to the complexity of rice seed production and the unpredictability of the seed market, coupled with global climate change, extreme weather and frequent natural disasters, it is often necessary to adjust a large number o...

AI Technical Summary

Problems solved by technology

[0009] Although various initiators have their own characteristics, the disadvantages are also obvious: PEG has the properties of a colloid, and its solution can obtain a lower water potential, and it has no toxic effect on the seeds, but it is viscous and the oxygen solubility in the solution Low, and the dosage is large, the cost is high, the amount of bacteria on the surface of the seed increases, etc.

The action mechanism of PVA is similar to that of PEG, which has the advantages of less dosage and low cost, but the triggering effect is not ideal and cannot meet the production requirements.

[0010] Inorganic salt ions are generally used in small amounts and the cost is relatively low, but the ions of inorganic salts can penetrate into the seeds and accumulate in the seeds during the treatment process, thereby reducing the osmotic potential of the seeds, causing the seeds to absorb more water and reducing the germination rate

Water triggering may cause uneven moisture absorption of seeds, resulting in damage to seeds and increase in the amount of bacteria on the surface of seeds

[0011] Appropriate hormone (such as gibberellin, etc.) treatment usually has a promotion effect on the lifespan, viability or germination ability of fresh seeds. The trend is that hormone treatment significantly inhibits seed germination, so treating deteriorating seeds with hormones is not a good way to revive and improve the vigor of deteriorating seeds

[0012] After the rice seeds are treated with antibiotics, rare earth elements La or Ce, although the seed vigor is significantly increased, the toxicity of the chemicals and the side effects on environmental pollution cannot be underestimated. Negative effects of the system will affect the sustainable use of farmland ecosystems

[0013] Solid substrates cause problems with difficult separation of seeds and substrates

[0014] Other physical methods such as using high-voltage electrostatic fields and simulated microgravity treatment to recover the vitality of deteriorating seeds require special equipment, high cost, and the possibility of genetic mutations

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