论文部分内容阅读
曾有人认为甜菜雄性不育性是数量遗传,受多基因控制,还有人认为甜菜雄性不育性是近亲交配的结果。如果真是如此,环势因子就将影响雄性不育的表现型,增加选育雄性不育系的困难,并使雄性不育系及其杂种的选育失去意义。国外对此问题也较重视,据资料报导,1967年国际上把探讨环境对甜菜细胞质雄性不育影响作为协作课题,1967年在10个地方、1968年在18个地方进行了试验。自从七十年代我国开展甜菜雄性不育系选育工作以来,上述问题一直为甜菜选育工作者所关心。本文通过光、温、湿等不同气象因子与N、P、K等营养元素的不同含量、不同地
It has been suggested that the number of male sterility of sugar beet is genetically controlled by multiple genes, while others think that the male sterility of sugar beet is the result of inbreeding. If so, the environmental factors will affect the male sterility phenotype, increase the difficulty of breeding male sterile lines, and the male sterile lines and hybrids breeding meaningless. Foreign countries also attach more importance to this issue. According to the information reported, in 1967, the international discussion on the environmental impact on the cytoplasmic male sterility of sugar beet was taken as a collaborative task. Experiments were conducted in 19 places in 1967 and in 18 places in 1968. Since the seventies in China to carry out the breeding of sugar beet male sterile line, the above problems have been beet breeding workers are concerned. In this paper, different meteorological factors such as light, temperature, humidity and N, P, K and other nutrients of different content, different