[Objective] To study the ecophysiological effects of low temperature stress on Actinidia arguta （Seib.et.Zucc.）, and provide a theoretical basis for the introduc- tion and breeding of cold resistant varieties. [Meth...[Objective] To study the ecophysiological effects of low temperature stress on Actinidia arguta （Seib.et.Zucc.）, and provide a theoretical basis for the introduc- tion and breeding of cold resistant varieties. [Method] A. arguta as the test material was processed at room temperature of 4 ℃ to determine the contents of chloro- phyll, water soluble sugar, water soluble protein, free proline, MDA, and antioxidant enzymes （POD activity, SOD activity, CAT activity） with the treatment at 25℃ as the control. [Results] The results indicated that with the prolonging of stress time, the content of chlorophyll was first increased and then decreased, and the content of MDA was increased; soluble sugar content of seedling leaf decreased gradually, while the soluble protein and proline content of seedling leaves were first increased and then decreased; the activities of SOD and POD were displayed a decline trend, meanwhile the activities of CAT was first increased and then decreased. [Conclu- sion] The various indicators showed that under low temperature stress, the chloro- phyll content decreased accompanied with membrane lipid peroxidation and MDA accumulation, and soluble sugar, soluble protein, free proline and antioxidant en- zymes play a protective role in different degrees.展开更多
[Objectives]This study aimed to investigate the effect of sowing rate,fertilizer amount and light on yield of Cichorium glandulosum Boiss.et Huet.[Methods]The Latin square design was adopted to investigate the effect ...[Objectives]This study aimed to investigate the effect of sowing rate,fertilizer amount and light on yield of Cichorium glandulosum Boiss.et Huet.[Methods]The Latin square design was adopted to investigate the effect of sowing rate+fertilizer amount,sowing rate+light on root and seed yield of C.glandulosum Boiss.et Huet.The changes in the seed and root yield of C.glandulosum Boiss.et Huet.under the influence of sowing rate,N application rate and light were compared and analyzed.[Results]In Moyu,Hotan and similar areas,the suitable sowing rate of C.glandulosum Boiss.et Huet.was 4.5-15.0 kg/ha.Without applying fertilizer,if the main purpose is to harvest the roots,the sowing rate of C.glandulosum Boiss.et Huet.is recommended to be 7.5-15.0 kg/ha;and if the main purpose is to harvest the seeds,the sowing rate is recommended to be 4.5-7.5 kg/ha.Shading will affect the root and seed yield.At the fertilizer amount of 450 kg/ha,the optimal sowing rate of C.glandulosum Boiss.et Huet.is 4.5 kg/ha.[Conclusions]This study provides a certain reference basis for artificial cultivation of C.glandulosum Boiss.et Huet.展开更多
基金Supported by the Special Fund for Agro-scientific Research in the Public Interest (201303093)the Key Project for Agricultural Improved Variety Breeding of Shandong Province (Lunongliang[2016]No.6~~
文摘[Objective] To study the ecophysiological effects of low temperature stress on Actinidia arguta （Seib.et.Zucc.）, and provide a theoretical basis for the introduc- tion and breeding of cold resistant varieties. [Method] A. arguta as the test material was processed at room temperature of 4 ℃ to determine the contents of chloro- phyll, water soluble sugar, water soluble protein, free proline, MDA, and antioxidant enzymes （POD activity, SOD activity, CAT activity） with the treatment at 25℃ as the control. [Results] The results indicated that with the prolonging of stress time, the content of chlorophyll was first increased and then decreased, and the content of MDA was increased; soluble sugar content of seedling leaf decreased gradually, while the soluble protein and proline content of seedling leaves were first increased and then decreased; the activities of SOD and POD were displayed a decline trend, meanwhile the activities of CAT was first increased and then decreased. [Conclu- sion] The various indicators showed that under low temperature stress, the chloro- phyll content decreased accompanied with membrane lipid peroxidation and MDA accumulation, and soluble sugar, soluble protein, free proline and antioxidant en- zymes play a protective role in different degrees.
基金Supported by Science and Technology Support Project of Xinjiang Uygur Autonomous Region(2016E02007)Western Young Scholars Project of Chinese Academy of Sciences(2018-XBQNXZ-A-002)
文摘[Objectives]This study aimed to investigate the effect of sowing rate,fertilizer amount and light on yield of Cichorium glandulosum Boiss.et Huet.[Methods]The Latin square design was adopted to investigate the effect of sowing rate+fertilizer amount,sowing rate+light on root and seed yield of C.glandulosum Boiss.et Huet.The changes in the seed and root yield of C.glandulosum Boiss.et Huet.under the influence of sowing rate,N application rate and light were compared and analyzed.[Results]In Moyu,Hotan and similar areas,the suitable sowing rate of C.glandulosum Boiss.et Huet.was 4.5-15.0 kg/ha.Without applying fertilizer,if the main purpose is to harvest the roots,the sowing rate of C.glandulosum Boiss.et Huet.is recommended to be 7.5-15.0 kg/ha;and if the main purpose is to harvest the seeds,the sowing rate is recommended to be 4.5-7.5 kg/ha.Shading will affect the root and seed yield.At the fertilizer amount of 450 kg/ha,the optimal sowing rate of C.glandulosum Boiss.et Huet.is 4.5 kg/ha.[Conclusions]This study provides a certain reference basis for artificial cultivation of C.glandulosum Boiss.et Huet.
