Protoplasts of embryogenic suspension cells of loblolly pine (Pinus taeda L).were isolated at exponential growth stage.Influences of various concentrations of basal medium,levels of BA,and concentrations of inositol ...Protoplasts of embryogenic suspension cells of loblolly pine (Pinus taeda L).were isolated at exponential growth stage.Influences of various concentrations of basal medium,levels of BA,and concentrations of inositol on the differentiation of embryonal suspensor mass (ESM),early stage somatic embryos (ESE) ,and lae stage somatic embryos (LSE) were investigated .A study of the effect of various concentrations of LP basal medium sowed that the optimal basal medium concentration of ESM,ESE,and LSE differentiation was 1.25 LP medium.The effects of various levels of BA and inositol showed that the optimal concentrations of BA for the formation of ESM,ESE and LSE were 4 mg/L ,2mg/L and 1mg/L,respectively ,and the optimal concentrations of inositol for the ESM ,ESE and LSM formation were 400mg/L,800mg/L and 1,200mg/L,respectively.展开更多
What happened to the Olympic torch relay abroad reveals how little and superficially the western countries, in particular, know of china. Meanwhile there also exists a lack or vacancy of English teaching in English te...What happened to the Olympic torch relay abroad reveals how little and superficially the western countries, in particular, know of china. Meanwhile there also exists a lack or vacancy of English teaching in English teaching at home. The failure of expressing Chinese culture and conditions correctly and fluently among the English learners has already resulted in negative impact on our international image, which is related to our teaching policy of strengthening western culture and neglecting the export of our own culture. Therefore, in the English teaching at all levels, great attention should be paid to the cross-cultural communication between home culture and the culture of target language, the promotion of expressing mother culture in foreign languages, and exporting and broadcasting Chinese culture.展开更多
文摘Protoplasts of embryogenic suspension cells of loblolly pine (Pinus taeda L).were isolated at exponential growth stage.Influences of various concentrations of basal medium,levels of BA,and concentrations of inositol on the differentiation of embryonal suspensor mass (ESM),early stage somatic embryos (ESE) ,and lae stage somatic embryos (LSE) were investigated .A study of the effect of various concentrations of LP basal medium sowed that the optimal basal medium concentration of ESM,ESE,and LSE differentiation was 1.25 LP medium.The effects of various levels of BA and inositol showed that the optimal concentrations of BA for the formation of ESM,ESE and LSE were 4 mg/L ,2mg/L and 1mg/L,respectively ,and the optimal concentrations of inositol for the ESM ,ESE and LSM formation were 400mg/L,800mg/L and 1,200mg/L,respectively.
文摘What happened to the Olympic torch relay abroad reveals how little and superficially the western countries, in particular, know of china. Meanwhile there also exists a lack or vacancy of English teaching in English teaching at home. The failure of expressing Chinese culture and conditions correctly and fluently among the English learners has already resulted in negative impact on our international image, which is related to our teaching policy of strengthening western culture and neglecting the export of our own culture. Therefore, in the English teaching at all levels, great attention should be paid to the cross-cultural communication between home culture and the culture of target language, the promotion of expressing mother culture in foreign languages, and exporting and broadcasting Chinese culture.
