Cytological,biochemical and physiological charcteristics of quiescent,high-vigor carrot somatic embryos obtained with the use of regulation culture were studied. As shown in cytological observation, quiescent somatic ...Cytological,biochemical and physiological charcteristics of quiescent,high-vigor carrot somatic embryos obtained with the use of regulation culture were studied. As shown in cytological observation, quiescent somatic embryos obtained by regulation culturing for 70 days displayed small compacted cells with thick wall, dense cytoplasm and large amount of starch granules. Biochemical tests revealed a starch content and a soluble sugar content 1.9 and 1.7 times respectively as much as those of the control embryos(normal culture) while physiological study demonstrated that the respiration was maintained stally at a very low level,only 1/4 that of the control at the end of the 70-day period. These results provide further evidences that regution culture so after the morphology, biochemistcy, physiologr and metabolism of somatic embryos that they became quiescent,highly synchronized, and had their roots ungrown, a sate facilitating safe storage.展开更多
文摘Cytological,biochemical and physiological charcteristics of quiescent,high-vigor carrot somatic embryos obtained with the use of regulation culture were studied. As shown in cytological observation, quiescent somatic embryos obtained by regulation culturing for 70 days displayed small compacted cells with thick wall, dense cytoplasm and large amount of starch granules. Biochemical tests revealed a starch content and a soluble sugar content 1.9 and 1.7 times respectively as much as those of the control embryos(normal culture) while physiological study demonstrated that the respiration was maintained stally at a very low level,only 1/4 that of the control at the end of the 70-day period. These results provide further evidences that regution culture so after the morphology, biochemistcy, physiologr and metabolism of somatic embryos that they became quiescent,highly synchronized, and had their roots ungrown, a sate facilitating safe storage.
