There are two kinds of theoretical defects export in the diagnosis and recommendation integrated system(DRIS):the distribution of nutrient elements ratios with
Inter-reference ofcompetitive reverse transcription polymerase chain reaction(RT-PCR)was constructed by intron method to detect the change of PC mRNA level in t
The photosynthetic characteristics of strawberry(Fragaria x ananassa Duch. cv. Toyonoka)leaves under illumination of identical light intensity(55-57% natural li
Thermostable enterotoxinⅠ (ST1) mutant genes and thermolabile enterotoxin B subunit (LTB) genes were amplified by PCR from plasmids of Eschenichia coli C83902.