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一、控制杂交种子质量的环节玉米杂交种子的质量包括种子的遗传、纯度、发芽率、含水量、种子活力等因素,其质量控制环节贯穿于亲本自交系繁殖、杂交制种阶段直至收购、脱晒、贮藏、加工、包装、运输、销售等每道工序,每个过程。 1.按程序繁殖亲本自交系,提高亲本种子纯度。亲本自交系是组配玉米杂交种的物质基础,自交系保纯繁殖是提高杂交种纯度的重要措施之一。为了保证亲本自交系的纯度和质量,依据市亲本、县(区)制种的市定原则,市集中繁殖亲本自交
First, the quality control of hybrid seed corn hybrid seed quality, including the genetic, purity, germination rate, water content, seed vigor and other factors, the quality control links throughout the parent inbred breeding, hybrid seed production stage until the acquisition, Sunscreen, storage, processing, packaging, transportation, sales and every procedure, each process. 1. Breeding parental inbred lines by program to improve the purity of the parental seeds. Parental inbred lines are the material basis for the combination of maize hybrids. Pure propagation of inbred lines is one of the important measures to improve the purity of hybrids. In order to ensure the purity and quality of the parental inbred lines, based on the principle of market-based and county (district)