两个早熟大粒鲜食葡萄新品种

两个早熟大粒鲜食葡萄新品种杨美容，张映祝，陈振邦，黎盛臣（中国科学院植物研究所北京植物园，北京１０００９３）关键词葡萄，早熟大粒，新品种全世界约有葡萄品种８０００多个，其中优良早熟大粒鲜食品种却很少。中国科学院植物研究所北京植物园葡萄课题组从１９６０...     

专科学校学籍管理信息系统设计

对学籍管理信息系统进行了需求分析 ,介绍了学籍管理信息系统的系统结构、设计特点和关键技术的实现     

水分胁迫对贺兰山东麓酿酒葡萄光合特性的影响

为了掌握土壤水分胁迫对酿酒葡萄光合特征的影响,以5a生酿酒葡萄蛇龙珠为材料,在大田设置常规持水量(CK),轻度胁迫(LS),中度胁迫(MS)和重度胁迫(SS)4个田间持水量水平进行研究,分别测定不同处理下的光合指标。结果表明,随着胁迫程度的加大,葡萄叶片净光合速率(Pn)、蒸腾速率(E)、叶片气孔导度(Gs)和胞间CO2浓度(Ci)均呈现出不同程度的下降趋势,且CK和LS差异较小,MS和SS差异较小,水分利用效率(WUE)呈现CK-LS组和MS-SS组上下交替趋势,且酿酒葡萄的光合能力随着水分胁迫程度的增加而下降。     

秋季鲜食糯玉米播种期与产量、积温关系研究

试验设7个播期,选用早熟品种“沪玉糯2号”和中早熟品种“沪玉糯3号”2个不同熟期优质鲜食糯玉米品种,研究秋季鲜食糯玉米适宜播种期产量与积温的关系。结果表明,播期间产量差异达极显著水平,品种间产量差异不显著,品种与播期交互作用效应达极显著水平。随播期延迟,秃顶增大,行粒数、穗粗、百粒鲜重、籽粒深度减小,生育期延长,雌雄开花间隔变大。各生育阶段所需积温比较稳定,生育天数变异系数较大,稳定性能较差;吐丝至采收需要320~350℃的有效积温。     

美国加州的葡萄生产与科研

对美国加州的葡萄种质资源保存与研究、栽培技术、贮藏保鲜、病虫害防治、脱毒技术以及无核葡萄品种与育种等作了较为详细的论述 ;同时强调指出 ,我国进行葡萄引种时除重视经济性状外 ,还应特别注意病虫检疫。     

Antifungal protection and antioxidant enhancement of table grapes treated with emulsions,vapors, and coatings of cinnamon leaf oil

Table grapes have high market value in international markets due to their attractive taste and high antioxidant content. However, their market potential is limited by losses due to Botrytis cinerea Pers. Fr. Cinnamon leaf oil (CLO) is a natural fungicidal and antioxidant agent that can be used to avoid postharvest losses due to B. cinerea Pers. Fr. and to increase the antioxidant levels of this produce. CLO was applied to grapes as water emulsions (0, 0.5, 2.5, and 5 g L⁻¹), as vapors (0, 0.196, 0.392, and 0.588 g L⁻¹), or as a chemical incorporated into pectin coatings (0 and 36.1 g L⁻¹). Afterwards, berries were stored at 10 °C for 15 d and were evaluated periodically for the fungal decay index, the total phenolic and flavonoid contents and the antioxidant activity using the Trolox equivalent antioxidant capacity and DPPH radical inhibition methods. The odor acceptability of the treated berries was evaluated after 10 d of storage. The CLO emulsion (5 g L⁻¹) significantly reduced the fungal decay without affecting the antioxidant properties of the berries. The application of CLO as a vapor was more effective according to the evaluated parameters than the emulsions; all tested concentrations inhibited fungal decay and increased the flavonoid content and antioxidant activity. When CLO was incorporated into the pectin, no fungal decay appeared, and the highest antioxidant activity was observed after 15 d of storage. Additionally, all treatments, except the emulsion treatment, increased the odor acceptability of the treated berries compared to the control berries. From this study, it can be concluded that CLO as vapors or coatings can be used to control decay and increase the antioxidant health benefits of grapes due to CLO's antifungal and antioxidant properties.     

10色板对鲜食葡萄3种主要害虫的诱捕效果

利用10种颜色制成的粘虫板于2011年5月7日至2011年11月1日在鲜食葡萄(莫尔格瓦)上测试了葡萄主要害虫绿盲蝽、葡萄二星叶蝉以及葡萄二黄斑叶蝉3种害虫成虫对不同颜色粘虫板的诱捕效果。结果表明,10种色板诱捕到绿盲蝽数量较多,而诱捕到二星叶蝉和二黄斑叶蝉数量较少。经方差分析,米黄、黄色诱捕绿盲蝽效果最好,深绿、绿色、白色、土黄、红色居中,深蓝其次,最差的是黑色、天蓝色,且差异显著;诱捕的另外两种害虫二星叶蝉和二黄斑叶蝉,分别以土黄、黄色,土黄、黑色、米黄色效果最好。     

上海玉米生产历史与现状分析

对上海玉米生产的历史和现状进行了详细分析,探讨了上海玉米的消费与需求状况,指出制约上海玉米发展的因素,提出了上海玉米生产进一步发展的思路和对策。     

温总理给浚单玉米起名叫“永优”

“一粒种子可以改变一个世界,一个品种可以造福一个民族。”     

葡萄品种引种表现及栽培技术

通过3年的田间栽培,观察奥古斯特、粉红亚都蜜2个葡萄品种的植物学特征和果实性状,对它们在天津市静海县的生长结果及生态适应性进行评价。结果表明:进行相应的田间栽培技术管理,2个品种早结丰产性良好,7月中下旬成熟,耐贮运,可适度发展以调节鲜食葡萄供应期。