Growth regulator and its application that can improve the yield of hybrid rice seed production and sterile line propagation

Abstract

The invention provides a growth regulating agent capable of improving hybrid rice seed production and sterile line seed reproduction yield. The growth regulating agent is prepared from the following components: 2,4-epibrassinolide, indole-3-acetic acid, zeatin and water, and the pH value is 5.8 to 6.5. By using the growth regulating agent provided by the invention, in hybrid rice seed production and sterile line seed reproduction, the productive tiller percentage of a sterile line can be improved, so as to increase the number of productive ear, floret degeneration can be reduced, so as to increase kernels per spike, grouting is promoted, so as to improve ripening rate and / or increase thousand seed weight, and finally the hybrid rice seed production yield and the sterile line seed reproduction yield are improved. The growth regulating agent is simple and easy in preparation method, is good in product stability, strong in efficiency, safe and reliable, free of side effect and is suitable for popularization and application in hybrid rice seed production.

Description

technical field [0001] The invention relates to the technical field of plant growth regulators, in particular to a growth regulator capable of improving the yield of hybrid rice seed production and sterile line breeding and its application. Background technique [0002] my country is the largest rice producer and consumer in the world, and more than 60% of the population takes rice as a staple food. The use of heterosis has greatly increased the yield and total yield of rice production in my country, and has made great contributions to ensuring food security in our country. [0003] An important way to utilize rice heterosis is hybrid seed production, but usually, the actual yield of hybrid seed production and sterile line propagation is low, which greatly restricts the development of hybrid rice. [0004] In addition, rice requires a large amount of fertilizer during the planting process, but the traditional fertilization in my country often has a low utilization rate and ...

AI Technical Summary

Problems solved by technology

[0003] An important way to utilize rice heterosis is hybrid seed production, but under normal circumstances, the actual yield of hybrid seed production and sterile line propagation is low, which greatly restricts the development of hybrid rice

[0004] In addition, rice requires a large amount of fertilizer during the planting process, but the traditional fertilization in my country often has low utilization rate and causes damage to the soil.

Images