The quality character, the dehydrogenase activities and the α amylase activity of Castanea mollissima conserved materials, including the seeds and the excised embryos, were analyzed for purpose of the feasibility of ...The quality character, the dehydrogenase activities and the α amylase activity of Castanea mollissima conserved materials, including the seeds and the excised embryos, were analyzed for purpose of the feasibility of long term storage associated with cryopreservation. The results showed that moisture content was the critical factor deciding the cryopreservation effects of seeds, which were desiccated down to 20% necessarily. Under the conditions of the cryoprotectants, the freezing injury reduced largely, and dehydrogenase activities remained well. Moreover the cryoconserved scale of moisture content was enlarged. A proper combination of cryopreserved factors contributed to maintain the seed vigor, the dehydrogenase activity and α amylase activity of excised embryos during cryopreservation.展开更多
The characters of flowering and non\|flowering bamboo at 1\|year\|old and 2\|year\|old,including weight per area,chlorophyll content photosynthetic rate,respiratory rate and the content of N,P and K were analyzed.The ...The characters of flowering and non\|flowering bamboo at 1\|year\|old and 2\|year\|old,including weight per area,chlorophyll content photosynthetic rate,respiratory rate and the content of N,P and K were analyzed.The results showed that comparing the flowering bamboo with non\|flowering bamboo, the mean weight per area and total amount of chlorophyll of 1\|year\|old and 2\|year\|old bamboo reduced 12.75% and 21.79% respectively,the mean net photosynthetic rate decreased by 10.02%,the mean light respiratory rate and dark respiratory rate increased by 64.52% and 20.05%.The analysis also showed the flowering bamboo had lower assimilation and stronger dissimilation ability than the non\|flowering bamboo.Comparing the N,P and K content in different organs,the parts under ground were most distinct,the N,P and K content in roots for flowering bamboo reduced by 17.02%,33.76% and 13.53% respectively compared with non flowering,and those in the stem under ground reduced by 27.43%,66.63% and 51.17% respectively.But the N,P and K content in the stem,branch and leaf of flowering bamboo were higher comparing with the non\|flowering bamboo.展开更多
文摘The quality character, the dehydrogenase activities and the α amylase activity of Castanea mollissima conserved materials, including the seeds and the excised embryos, were analyzed for purpose of the feasibility of long term storage associated with cryopreservation. The results showed that moisture content was the critical factor deciding the cryopreservation effects of seeds, which were desiccated down to 20% necessarily. Under the conditions of the cryoprotectants, the freezing injury reduced largely, and dehydrogenase activities remained well. Moreover the cryoconserved scale of moisture content was enlarged. A proper combination of cryopreserved factors contributed to maintain the seed vigor, the dehydrogenase activity and α amylase activity of excised embryos during cryopreservation.
文摘The characters of flowering and non\|flowering bamboo at 1\|year\|old and 2\|year\|old,including weight per area,chlorophyll content photosynthetic rate,respiratory rate and the content of N,P and K were analyzed.The results showed that comparing the flowering bamboo with non\|flowering bamboo, the mean weight per area and total amount of chlorophyll of 1\|year\|old and 2\|year\|old bamboo reduced 12.75% and 21.79% respectively,the mean net photosynthetic rate decreased by 10.02%,the mean light respiratory rate and dark respiratory rate increased by 64.52% and 20.05%.The analysis also showed the flowering bamboo had lower assimilation and stronger dissimilation ability than the non\|flowering bamboo.Comparing the N,P and K content in different organs,the parts under ground were most distinct,the N,P and K content in roots for flowering bamboo reduced by 17.02%,33.76% and 13.53% respectively compared with non flowering,and those in the stem under ground reduced by 27.43%,66.63% and 51.17% respectively.But the N,P and K content in the stem,branch and leaf of flowering bamboo were higher comparing with the non\|flowering bamboo.
