Proteomic Analysis of Wheat Seed in Response to Drought Stress

Drought stress is one of the major factors affecting in wheat yield and grain quality. In order to investigate how drought stress might influence wheat quality during grain filling, three wheat cultivars Gaocheng 8901, Jagger and Nongda 3406 were subjected to drought stress during the grain filling stage. Neither globulin and glutenin, nor the relative percentage ofamylose significantly changed following drought treatments, whereas albumin and gliadin concentrations did. The SDS-sedimentation, which has a strong linear correlation with wheat baking quality was markedly decreased following drought stress. These results indicated that drought had an adverse effect on wheat qualit3,. In order to investigate the protein complexes in the wheat flour, the data from native PAGE and SDS-PAGE were combined and a total of 14 spots were successfully identified, and of these eight protein types were determined to be potential complex forming proteins.     

枣园地面覆盖对土壤地温和红枣生长发育的影响

[目的]以南疆枣园生态系统为研究对象,研究不同地表覆盖模式对果园土壤温度和红枣生长发育的影响,寻找最优地表覆盖模式,为红枣高产优质生产提供参考.[方法]在翻耕覆膜、翻耕秸秆覆盖、翻耕裸地和免耕裸地条件下,对5年骏枣枣园的土壤温度、枣果生长发育、枣果生长动态、枣外观品质进行测量.[结果]0 ～25 cm土层土壤平均温度翻耕覆膜＞翻耕裸地＞免耕裸地＞翻耕秸秆覆盖.在生育期内,秸秆覆盖处理的综合生长量（二次枝长、二次枝粗）高于其他3个处理,促进枣树生长发育.不同覆盖处理措施中,秸秆覆盖下的枣品质最好,覆膜次之.[结论]综合考虑不同覆盖措施的效应,秸秆覆盖比较适宜新疆地区红枣生产中推广应用.     

杂交水稻制种母本机插示范效果与栽培技术

总结福建省建宁县2013年杂交水稻制种母本机械插秧的示范情况,比较分析机械插秧与人工插秧的经济效益和社会效益,提出杂交水稻制种母本机械育插秧的配套技术.     

甘蓝型油菜无花瓣黄子品系选育

为选育甘蓝型无花瓣黄子高油油菜(Brassica napus L.)品种,以显性黄子油菜品系06H440为母本,与自育黑子无花瓣品系AP1进行杂交、回交和连续多代自交,不同回交世代群体隔离种植,以无花瓣和黄子性状为选择标记,采用单株选择和混合选择相结合,品质筛选和抗病鉴定相结合,选育出一系列甘蓝型无花瓣黄子油菜品系.这些品系表现出完全无花瓣、黄色种皮、品质符合低芥酸和低硫甙指标、舍油量高、抗菌核病能力较强及可作为亲本配制高产高油杂交油菜品种等多项优良性状.     

灵武长枣嫁接育苗技术

文章总结了经二改(改进嫁接方法和嫁接部位)、二优(优选砧木培育方法、优质接穗)覆膜播种酸枣仁培育灵武长枣的嫁接育苗技术。     

改善打瓜籽脱壳化学方法的研究

试验以打瓜籽为原料,对改善打瓜籽脱壳化学方法的工艺进行研究。分别选取氢氧化钠、氢氧化钙、盐酸、柠檬酸四种浸泡液进行试验,并以外壳颜色、整仁率、仁颜色、酸碱存留度等指标进行综合评价,确定试验工艺参数为:5%HCl,60℃水浴加热0.5 h,120℃高温烘烤1 h,在此条件下,打瓜籽易脱壳且外形美观,酸残留量较少,感官评定91分。     

我国红枣去核机的研究现状与发展趋势

红枣加工产品对于红枣销售渠道的拓宽、红枣产业化链条的延长具有重要意义。去核作为红枣精深加工生产中的关键环节,使用优质、高效的去核机可以大大降低红枣去核的劳动强度、提高生产效率、保证去核红枣的安全卫生。主要介绍了目前我国红枣去核机的发展现状,指出了市场上现有各种去核机产品在实际生产过程中存在的问题,分析了我国红枣去核机的发展趋势。     

天津市农作物种业科技发展的对策

农作物种业是国家基础性、战略性的核心产业,是促进农业长期稳定发展、保障国家粮食安全的根本。同时,农作物种业是一个高度依赖科技创新的行业,种业科技是种业发展的根基所在。深入剖析了天津市农作物种业科技发展现状与存在的问题,探讨立足本市、面向全国的天津种业科技发展的思路、重点任务及政策保障体系,为政府实施种源农业提供决策参考依据。     

Variations in carbon and nitrogen ratios and their effects on seed germination in Cupressus sempervirens populations

This study investigated the variations in the carbon (C), nitrogen (N), and C/N ratios in the seeds of the Mediterranean Cypress (Cupressus sempervirens L.), a typical forest tree of the Mediterranean Region. The data were gathered from populations distributed across Turkey. We also evaluated the relationship between these variations and germination parameters such as the germination percentage (GP) and mean germination time (MGT). All of the evaluated characteristics demonstrated statistically significant variations among the populations. The GPs were generally low and varied between 14% in Datça and 51% in the Köprülü Kanyon. The MGTs ranged from 14.9 in the Köprülü Kanyon to 18.9 in Marmaris. In addition, the C ratios varied between 46% in Marmaris and 52% in the Köprülü Kanyon, while the N ratios ranged from 1.1% in Beycik and Göksu to 1.8% in the Köprülü Kanyon. Furthermore, we observed a positive correlation between the GP and the C and N contents (R² = 0.51 and R² = 0.49, respectively) but found a negative correlation between the MGT and the C and N contents (R² = 0.56 and R² = 0.32, respectively). Moreover, with regard to the combined C and N seed ratios of the regression models, R² = 0.95 for the GP and R² = 0.87 for the MGT, and the populations with higher quantities of C and N in their seeds had shorter MGTs and higher GPs.     

油茶籽成熟过程中油脂及营养物质变化的研究

通过油茶籽主要理化性质和营养成分的分析,研究了油茶籽成熟过程中油脂转化及营养物质的变化规律。结果表明：在油茶籽成熟过程中,鲜籽含水率持续下降,鲜出籽率变化不大,鲜籽出仁率小幅上升,干出籽率和含油率不断上升。油茶籽油中的酸值和过氧化值总体呈下降趋势。在油茶籽成熟过程中,油酸相对含量整体呈上升趋势,亚油酸和亚麻酸相对含量都呈下降趋势,与油酸含量呈极显著负相关（p≤0.01）,相关系数r分别为-0.978和-0.957。油茶籽成熟过程中,油脂积累和可溶性总糖含量的变化呈负相关（r=-0.289）,与可溶性淀粉（r=0.836）和可溶性蛋白（r=0.703）含量变化均呈显著正相关。α-生育酚含量变化基本上是先增加,在9月28日达到最大值0.153 mg·g^-1后基本维持稳定,角鲨烯和β-谷甾醇含量随着油茶籽的成熟先增加后下降。