The rest of phloem also produced callus through dedifferentiation. In addition, there was callus from xylem.残存的韧皮部也可以脱分化形成愈伤组织, 此外, 还存在愈伤组织源于木质部的情况.I walked to him and took his outstretched hand which was rough with call...
薪材短缺是毁林后果的最明显和最引人注目的实例.Firewood scarity offers the most visible and dramatic example of deforestation's effects.毁林的后果迫切需要更多的资助 、 清醒的头脑和真知灼见.The deforestation dilemma still cries for more commitment , clarity, and vi...