提高玉米杂交制种产量和质量的技术措施

• 作 者: 张晋生
• 机 构: 河南省农科院粮食作物研究所,
• 出 处: 河南农业科学
• 发表日期: 1990年05期
• 关键词: 玉米杂交制种 玉米制种产量 技术措施 制种田 保纯 雄穗 散粉期 制种单位 雌穗 种植密度

玉米杂交制种的产量和质量,是获得玉米高产的关键。为了提高玉米制种产量和质量,特提出如下技术措施。一、提纯繁殖玉米自交系目前普遍存在着重玉米制种,轻自交系繁殖,提纯和保纯。因为杂交制种可获得较高的利润,而自交系的繁殖和提纯因费工以致于赔钱,所以有些人不敢去做。从长远观点出发,要获得玉米增产,首先应抓玉米自交系的繁殖和提纯,有了高质量的自交系,才能配制质量高的杂交种。为了保证自交系的质量,制种田不宜用高代自交系,应采用一,二代原种。在繁殖中,要做好提纯和保

Maize hybrid seed production and quality, is the key to high yield corn. In order to improve the yield and quality of seed production of corn, the following special technical measures are proposed. First, purification of inbred lines of maize At present, widespread corn seed production, light inbred breeding, purification and preservation of pure. Because hybrid seed production can get a higher profit, and breeding and purification of inbred lines as a result of labor costs so that some people are afraid to do. From a long-term point of view, to increase the yield of maize, the first priority should be given to the breeding and purification of maize inbred lines. With high-quality inbred lines, high-quality hybrids can be formulated. In order to ensure the quality of inbred lines, farming should not be used in high-generation inbred lines should be used one or two original species. In breeding, to be purified and Paul