All this showed that the isolate resembles the reported CMV.CMV-As was confirmed to belong to Cucumovirus by the biological properties detection, but because of the high similarity of the subgroup I and subgroup II, only the biological properties check can’t ensure the kind of CMV-As.
The results showed that 4, 4 and 2 of the 10 transgenic plants displayed high, middle and larvae fed on high- and middle-resistant plants were more than 90% and 75%, respectively, significantly higher than that on the check plants.
An analysis and sorting out of the frequent problems were made in the lightning design for gas station, and pointed out the design steps breaching the standard requirement and its rea- sons, to which attention should be paid in the design, check and test of lightning protection of the gas station.
Through the check by microscope, isolation, cultivation and observation of pathogens, determination of pathogenicity, and investigation of field disease, it was preliminarily identified as fusarium root rot disease of Pueraria thomsonii, and the pathogens was Fusarium solani, belonging to Deuteromycotina.
The experiment result showed that pesticides sprayed on any part of the pine trees,such as trunk or crown could effectively reduce the rate of mortality of pine trees. The rate of mortality of the pine trees on the pine forest which of them sprayed PEM was 2 31% in test field,and was 36 3% in check forest The former one reduced 34% compared with the later.
Based on the occurrence and disservice characteristic,an integrated control system with zoology control as its nut,agricultural control,seedling check and protect natural enemy as its leading measure,medicament control as its secondary measure was proposed in this paper.
Methods: Using the time series of cucumber downy mildew disease,we established an autoregressive integrated moving average model,ARIMA(2,2,0) based on model identification,comparison of residual variance,estimation and verification of parameter,observation of the correlation of the estimates matrix,autocorrelation check of the residuals,analysis of the fitting of model and so on.
The resistance in hybrids(F_1) obtained from usingDwarf Yellow (provided with Tm-2nv gene) or Ohio MR-9 (provided with Tm-2~a gene) as parents was significantly higher than that of the check cultivar6613 in field conditions.