Retrospection simply on strong seedling medicament of rice`s development ,analyse the different dosage`s effect that strong seedling medicament of rice named Mufeng(south type)on seedling stuff and yield.
Through the experiments of pathogen identification,low altitude spore capturing, summer spore survival experiment, and winter spore inducing experiment, it was indicated that the corn rust(south type)in Hebei province was caused by foreign pathogen.
According to the fundamental theroy of the tree introduction, the prospectfor introduction and development of the southern type clones of the Aigeirons section has beenmade on the basis of the preliminary introductory results in Zhejiang.
A systematic study made in Linhai on wood properties of paper pulpwood of 17 new clones and other 3 clones as a control shows that the fiber length in the trunk of these 20 clones ranges between 0 966 0 and 1 143 0 mm,which has met the standard laid down by the International Timber Society for the fiber of middle rank and the specific gravity of the trunk is from 0 318 8 to 0 368 2 g·cm -3 ;
Using maize(Zea mays L.) resistant inbred line P25,susceptible inbred line F349 and the derived NILs of BC5(F349 is the recurrent parent) to southern corn rust as materials,a 321-bp specific DNA band was amplified and cloned by means of RGA(resistance gene analog) primers.
Analysis of DNA from transformants in Southern type experiments, as well as restriction analysis of retransformants into Escherichia coli, provide evidence that integration of foreign DNA into the genome of Absidia glauca is possible.
The species with southern type of distribution are minimum in number.