Method for production of corn hybrid seed

Abstract

A method for production of the seed of hybridized corn "Yuyu No.22" from the male sterility line "3" is characterized by that the genetic breeding technique is used to transfer the parent selfing line "Zong 3" and "87-1" to male sterility line Cms-E1 "3" and recovery line Cms-El 87-1 (Rf). The sterility plant rate for the sterility line and the recovery plant rate of the recovery line are respectively 99.9% and 100%.

Description

Technical field [0001] The invention relates to a new technology for the production of corn hybrid seeds, which is a method for preparing corn hybrid Yuyu 22 by using male sterility "three lines", and belongs to the field of plant genetic breeding and seed production. Background technique [0002] The utilization of maize hybrids began in the 1930s. It was the application of genetics to breeding, and the application of breeding results to production and achieved huge social and economic benefits. Since the 1950s, my country began to improve maize varieties and promote hybrids. From the use of excellent farm varieties, inter-variety hybrids, double crosses to single crosses, the breeding and utilization of maize hybrids has developed rapidly. The maize hybrid Yuyu 22 bred by Henan Agricultural University has a parent combination of Zong 3×87-1. This variety was approved by the Variety Approval Committee of Henan Province and Shaanxi Province in 1997 and 1998 respectively, and pass...

AI Technical Summary

Problems solved by technology

[0003] At present, this variety adopts the conventional seed production method. During the seed production process, all the tassels of the female parent are manually removed before loosening powder. Timely and incomplete, the genetic purity of the seeds will be reduced, and the quality of the seeds will not meet the standards stipulated by the state

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