论文部分内容阅读
选用36份新种质合成相互轮回选择的2个基础群体(NRRSPⅠC0和NRRSPⅡC0)及常规的6个玉米优势群,测定多酚氧化酶(PPO)活性,探讨其利用前景。结果表明,Tan-HzC5酶活性最高,抗病性最好,且Tan-HzC5、NRRSPⅡC0与ReidC2的PPO活性处于同一较高水平;Luda、PFC5的活性最低,与前三者差异极显著;Pn6C4、NRRSPⅠC0和Lan.C2居中。NRRSPⅡC0与NRRSPⅠC0田间表现高抗玉米大斑病和小斑病,Luda高度感病。PPO活性高低与田间抗感病害的试验结果相吻合。
Thirty-six new germplasms were selected to synthesize the two basic groups (NRRSPⅠC0 and NRRSPⅡC0) and the conventional six maize dominant groups. The activity of polyphenol oxidase (PPO) was determined and its application prospects were discussed. The results showed that the activity of Tan-HzC5 was the highest and the disease resistance was the best. The activities of PPO of Tan-HzC5, NRRSPⅡC0 and ReidC2 were at the same high level. The activity of Luda and PFC5 was the lowest, NRRSP IOC and Lan.C2 are centered. NRRSPⅡC0 and NRRSPⅠC0 showed high resistance to leaf spot and spot blight of corn and Luda was highly susceptible. The level of PPO activity agrees well with the test results of field resistance to disease.