Two Job’s tears cultivars, yy18-1 (high resistance to drought stress) and yy12-7 (susceptible to drought stress) were used to investigate the responses of seed germination, root and seedling growth, and seedling anti...Two Job’s tears cultivars, yy18-1 (high resistance to drought stress) and yy12-7 (susceptible to drought stress) were used to investigate the responses of seed germination, root and seedling growth, and seedling antioxidant characteristics to drought stress simulated by polyethylene glycol (PEG) 6000 solutions with 0, -0.05, -0.1, -0.15, and -0.2 MPa osmotic potentials. The results showed that the germination energy, germination rate, germination index, root and seedling lengths, root and seedling diameters, root and seedling fresh masses, root and seedling dry masses, and seedling relative water content (RWC) decreased with the decrease of the osmotic potential of PEG 6000 solution. The contents of hydrogen peroxide (H2O2), malondialdehyde (MDA), and proline in seedling increased with the decrease of the osmotic potential of PEG 6000 solution. The activities of peroxidase (POD), catalase (CAT), ascorbate peroxidase (APX), and glutathione reductase (GR) in seedling increased and then decreased with the decrease of osmotic potential of PEG 6000 solution. -0.1 MPa was the optimal osmotic potential of PEG 6000 solution simulated drought stress at germination stage for Job’s tears. The proline content and activities of POD and CAT were important mechanisms for the maintenance of drought resistance in Job’s tears seedling.展开更多
以薏米、山药为主要原料进行粗粮饮品发酵工艺研究。产品研发在单因素试验基础上进行正交试验,通过感官品质评价、分析确定最佳的原料配比和发酵条件。最佳原料配比为(g/100ml):薏米7,山药3,蔗糖4。最佳发酵条件是:接种量9%、发酵温度3...以薏米、山药为主要原料进行粗粮饮品发酵工艺研究。产品研发在单因素试验基础上进行正交试验,通过感官品质评价、分析确定最佳的原料配比和发酵条件。最佳原料配比为(g/100ml):薏米7,山药3,蔗糖4。最佳发酵条件是:接种量9%、发酵温度39℃、发酵时间7~8 h、发酵终点p H 4.9、在5℃后熟15 h。产品感官品质优异,营养丰富,工艺简便,为薏米、山药的应用开辟了新途径。展开更多
文摘Two Job’s tears cultivars, yy18-1 (high resistance to drought stress) and yy12-7 (susceptible to drought stress) were used to investigate the responses of seed germination, root and seedling growth, and seedling antioxidant characteristics to drought stress simulated by polyethylene glycol (PEG) 6000 solutions with 0, -0.05, -0.1, -0.15, and -0.2 MPa osmotic potentials. The results showed that the germination energy, germination rate, germination index, root and seedling lengths, root and seedling diameters, root and seedling fresh masses, root and seedling dry masses, and seedling relative water content (RWC) decreased with the decrease of the osmotic potential of PEG 6000 solution. The contents of hydrogen peroxide (H2O2), malondialdehyde (MDA), and proline in seedling increased with the decrease of the osmotic potential of PEG 6000 solution. The activities of peroxidase (POD), catalase (CAT), ascorbate peroxidase (APX), and glutathione reductase (GR) in seedling increased and then decreased with the decrease of osmotic potential of PEG 6000 solution. -0.1 MPa was the optimal osmotic potential of PEG 6000 solution simulated drought stress at germination stage for Job’s tears. The proline content and activities of POD and CAT were important mechanisms for the maintenance of drought resistance in Job’s tears seedling.
文摘以薏米、山药为主要原料进行粗粮饮品发酵工艺研究。产品研发在单因素试验基础上进行正交试验,通过感官品质评价、分析确定最佳的原料配比和发酵条件。最佳原料配比为(g/100ml):薏米7,山药3,蔗糖4。最佳发酵条件是:接种量9%、发酵温度39℃、发酵时间7~8 h、发酵终点p H 4.9、在5℃后熟15 h。产品感官品质优异,营养丰富,工艺简便,为薏米、山药的应用开辟了新途径。