ABSTRACT
We obtained intergenus somatic hybrid between Alhagi pseudalhagi and Astragalus cicer by using electroporation. Agrobacterium rhizogenes A4-transformed A. pseudalhagi protoplasts were treated with iodoacetamide so that they were unable to sustain divisions. A. cicer protoplasts were isolated from a methionine-resistant mutant and did not survive in the medium without plant growth regulator. The intergenus somatic hybrid cells were selected based on physiological complementation between the two parents. We optimized some parameters of electroporation, such as direct current impulse, alternating current impulse and the impulse number. We identified ten hybrid clones by morphological observation, checking the chromosome numbers, isoenzyme analysis and random amplified polymorphic DNA analysis, and obtained regenerated plantlets from three hybrid clones.
Subject(s)
Astragalus Plant , Genetics , Physiology , Electroporation , Fabaceae , Genetics , Physiology , Hybridization, Genetic , Transformation, GeneticABSTRACT
Based on the analysis of the status quo of computer teaching,the present paper discusses the reform of teaching contents in the computer education in our college.
ABSTRACT
Objective To select a safe and feasible way by comparing the two main styles of splitting liver transplantation classical splitting and modified splitting.Methods In order to compare the distribution of artery, vein and bile duct of all segments of liver, 58 formaldehyde fixed livers and 8 fresh livers were divided into two groups. One group was subjected to classical splitting and the other group to modified splitting. Results Among 66 livers, 66.7?% of the segment VIII and 100?% of the segment V (all or some) drained to middle hepatic vein. In classical splitting group, the vein drainage of 5th and 8th segments of right graft was destroyed.Conclusion Modified splitting is safer and more reliable than classical splitting, so the former is the first choice when the size of donor liver is suitable.