Rice seed priming agent for low-oxygen adverse conditions and use method thereof

Abstract

The invention provides a rice seed priming agent for low-oxygen adverse conditions and a use method thereof, and belongs to the technical field of rice planting. The rice seed priming agent for the low-oxygen adverse conditions comprises a seed priming agent and a seed stress buffering agent, each litre of the seed priming agent is prepared from 80-120 g of PEG, 0.1-0.6 mg of salicylic acid and 0.1-0.5 mg of jasmonic acid, and each litre of the seed stress buffering agent is prepared from 20-30 g of glucose, 20-30 g of saccharose, 10-20 g of alpha-ketoglutaric acid, 10-20 g of fumaric acid, 10-20 g of L-glutamine, 10-20 g of ascorbic acid and 25-35 g of citric acid. According to the rice seed priming agent for the low-oxygen adverse conditions and the use method thereof, on the basis of utilizing seed priming for improving the stress resistance, according to limiting factors possibly existing in the seed germination process under the anaerobic stress condition, different priming agents and seed soaking agents are used, therefore, the seed germination capacity is improved, and the seed germination rate is increased.

Description

technical field [0001] The invention belongs to the technical field of rice planting, and in particular relates to a rice seed initiator under low-oxygen stress and its application method. Background technique [0002] Submergence / waterlogging is a major environmental factor limiting seed germination and seedling growth of direct-seeding rice. In actual production, due to reasons such as uneven land, poor drainage in the field, and unpredictable rainfall, direct-seeding rice seeds are often placed in a low-oxygen / anoxic flood / waterlogging stress environment. Although rice, as a starchy seed, can provide a small amount of energy through ethanol fermentation without O2, in actual production, there are still problems such as poor germination rate and incomplete emergence of direct seeding rice, resulting in unstable direct seeding yield. The reason may be due to 1) under anaerobic stress, the efficiency of starch degradation and sugar utilization in seeds is low, and the seed ...

AI Technical Summary

Problems solved by technology

In actual production, due to reasons such as uneven land, poor drainage in the field, and unpredictable rainfall, direct-seeding rice seeds are often exposed to low-oxygen / anoxic flooding / waterlogging stress environments

Although as a starchy seed, rice can supply a small amount of energy through ethanol fermentation without O2, but in actual production, there are still problems such as poor germination rate and incomplete emergence of direct seeding rice, resulting in unstable direct seeding yield

The reason may be due to 1) under anaerobic stress, the efficiency of starch degradation and sugar utilization in seeds is low, and the seed germination rate is slow; 2) the stress period is long, and the small energy supply provided by anaerobic respiration cannot support seed germination for a long time; 3 ) Toxic effect of alcohol, a product of anaerobic respiration, on seed germination

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