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二十世纪,一些国家先后开展了放射性物质应用干生物领域的研究,近年来较多利用快中子改良品种的工作,揭示出辐射敏感与生物新陈代谢活力的相关规律。在辐射理论的启示下,1974—1975年。我们在广东采用快中子处理板栗冬梢,试图探索植物诱导遗传突变的规律和定向改变植物某些性状可能性的研究。初试结果如下。一、材料和方法试验材料是1973年底采自浙江诸暨板栗良种场的毛板红品种(为1967年嫁接的结果树,1—2年生枝条)。采后于室内沙藏50天,2月18日进行快中子处理枝条(每枝条2个休眠芽)。在氘氚源快中子发射场连续处N45分钟,积分通量为2.5×10~(12)—6×10~(11)中子/厘米~2。23日用切接法嫁接于苗圃,共嫁接54株,砧木为3年生广东阳山油栗,以苗圃多余幼苗为对照。4月17日嫁接苗开始抽梢生长。1975年3月取上述已发生交异的嫁接苗枝条重作快中子处理。处理积分通量仍为2.5×10~(12)—6×10~(11)中子/厘米~2。共嫁接50株,对照10株。
In the twentieth century, some countries successively carried out the research on the application of radioactive material in the field of dry living. In recent years, they made more use of fast neutron to improve their varieties and revealed the relevant laws of radiation sensitivity and biological metabolic activity. Inspired by radiation theory, 1974-1975. We used fast neutrons to process chestnut shoots in Guangdong, trying to explore the laws of plant-induced genetic mutations and the possibility of orienting certain traits of plants. The first test results are as follows. I. Materials and Methods The test material was a mahogany red variety (grafted tree in 1967, 1-2 year old branches) collected from the chestnut breeding field in Zhuji, Zhejiang Province at the end of 1973. After harvest, the sand was stored in the house for 50 days. On February 18, fast neutron treatment branches (2 dormant buds per branch) were performed. In the neutron-fast neutron emission field of deuterium-tritium source, N45 minutes, the integral flux was 2.5 × 10 ~ (12) -6 × 10 ~ (11) neutrons / cm ~ A total of 54 grafted, rootstock for 3-year-yangshan oil in Guangdong, with nursery extra seedlings as a control. April 17 grafting seedlings began to shoot growth. March 1975 to take the above grafted grafted seedlings have been re-made fast neutron processing. The integral flux is still 2.5 × 10 ~ (12) -6 × 10 ~ (11) neutrons / cm ~ 2. A total of 50 grafted, control 10.