冀西北坝上地区大葱引种试验

以引进的"章丘大葱"、"铁杆大梧桐"、"中华巨葱王"3个大葱品种为试材,研究比较了3个大葱品种在冀西北坝上地区生育性状、抗病性、产量和营养品质等指标。结果表明:"铁杆大梧桐"综合性状好,产量高,抗病性强,营养品质好,适宜在冀西北坝上地区大面积推广种植。     

辽葱一号新品种的引种表现与推广

大葱是辽阳地区栽培的蔬菜品种之一,近几年由于品种单一、退化,造成大葱的质量和产量下降,影响了农民的经济收入。我们通过对辽葱一号、民丰、吉林葱王、章杂二号、章丘5个品种的主要性状调查分析,结果表明,辽葱一号在抗病性和产量等方面表现最佳,适宜在本地区大面积推广播种。     

抗病高产大葱新品种元美

正大葱具抗菌杀毒作用,是一种深受市民欢迎的蔬菜和重要的调味品。元美是武汉百兴种业有限公司新引进的大葱新品种。近年来在武汉市蔬菜科学研究所进行试种,表现为生长旺盛,品质优良,适应性广,抗病性强,产量高,在肥水充足、管理及时情况下每667 m2产量达4 000 kg以上,深受种植者、消费者喜爱。     

耐寒大葱品种比较试验

为筛选适合中原及北方寒冷地区种植的优良大葱品种,对8个不同耐寒大葱品种的生物学性状、抗病性、耐寒性、产量等特性进行比较试验。结果表明:郑研冬翠、青竹元藏、酒井、郑研寒玉大葱耐寒性好,抗逆强,综合性状好,分别比对照韩国黑龙大葱增产18.51%、9.97%、7.9 0%、3.2 1%,适合在中原及北方寒冷地区推广。     

河西走廊大葱无公害丰产技术

河西走廊绿洲灌溉农业区得天独厚的自然条件有利于大葱高产优质栽培。为满足人们对安全、优质、营养的无公害蔬菜的需求,我们按照国家无公害农产品管理办法和生产标准,立足当地资源优势,总结出了河西走廊大葱无公害生产技术。1选用高产优质抗病品种调查表明,目前生产上应用的农家品种,退化严重,产量低、葱白短、抗病性差,生育期需要多种农药交替喷施,才能达到防治病虫的目的,不能适应无公害大葱生产要求。针对这一现状,我们引种、筛选出掖辐1号大葱品种,该品种具有产量高、品质好、抗性强的特点,可作为生产无公害大葱的品种加以推广。2选择…     

大葱新品种平葱一号

平葱一号是平顶山市农科院与南阳市露地反季节蔬菜研究所利用掖选一号为母本。以日本大葱的优良株系为父本．通过有性杂交,连续多代自交分离后筛选优良株系培育而成的大葱新品种。经过多年的品种比较试验、区域试验和生产示范试验,结果表明,平葱一号儿芽萌发特别早,生长速度特别快,生长势强,产量高,商品性状优良,品质好,抗病性强,经济效益显著,是适合黄淮地区大葱主要产区春季反季节栽培的优良品种。     

郑州地区大葱品种比较试验

以"章丘1号"大葱为对照,比较分析了"寒丰快葱"、"日本超级元藏"、"大梧桐"、"超级银杆90白"、"超级大葱"、"铁杆傲寒葱王"、"大中华"、"绿丰状元"、"晚蕾大葱"9个大葱品种的主要经济性状和品质性状。结果表明:"绿丰状元"株高110.2cm、葱白长46.1cm,维生素C含量6.6mg/100g.FW,产量28 629.6kg/hm2,增产幅度达26.87%,生长势和抗病性较强,经济效益高,综合性状突出;"超级大葱"综合性状次之,但维生素C含量最高,为8.3mg/100g.FW。因此"超级大葱"和"绿丰状元"可以在郑州地区大面积示范推广。     

章丘大葱常见病虫害的综合防治

1大葱霜霉病、大葱紫斑病、大葱锈病 1．1农业防治 选择抗病品种,进行种子消毒。施足基肥,合理布局。加强田间管理,如雨后勤培土中耕,降低空气和土壤湿度,打掉病叶老叶,增加通风,降低地表温度,增强植株的抗病性,并实行两年以上的轮作,避免在阴湿地栽植大葱等。     

章丘大葱常见病虫害的综合防治

1 大葱霜霉病、大葱紫斑病、大葱锈病 1.1 农业防治 选择抗病品种,进行种子消毒.施足基肥,合理布局.加强田间管理,如雨后勤培土中耕,降低空气和土壤湿度,打掉病叶老叶,增加通风,降低地表温度,增强植株的抗病性,并实行两年以上的轮作,避免在阴湿地栽植大葱等.     

河西走廊麦茬复栽大葱高产优质栽培技术

河西走廊大葱常年播种面积在1000hm2左右，其中麦茬复栽面积达80%以上。长期以来，由于栽培技术落后，产量低而不稳，商品性较差，在一定程度上影响了种植结构调整和农民增产增收。为此，我们从1997年开始，在张掖市城郊经过多点试验与示范，总结出麦茬复栽大葱高产优质栽培技术如下。一、品种选择大葱选用生长势强、生长速度快、抗病性强的品种，如掖辐一号、章丘大葱。二、大葱育苗1.播种时间 河西走廊麦茬复栽大葱适宜育苗时期是3月25日～4月5日，当5cm地温稳定通过10～12℃时播种为宜。2.整理苗床 苗床应选择平坦、靠近水源的土壤肥沃…     

秋冬季番茄品种比较试验

引进3个番茄新品种进行比较试验,试验结果表明,综合性状较好的是齐达利和拉比,这2个品种产量高、抗病性强,商品性好,效益高,适合在福建莆田地区推广种植。     

旱地辣椒新品种筛选和适应性试验

2010~2011年对新育成和引进的11个辣椒新品种连续进行2年品种比较试验.试验结果表明,‘天椒9号’、‘航椒4号’和‘天椒0517’综合性状较好,产量高、抗病性强、商品性好、制干率高,适宜在甘谷县大面积推广种植.     

番石榴成花习性的调查

 调查了番石榴( Psidium guajava L. ) ‘新世纪’、‘无核’和‘水晶’品种的成花特点, 结果发现, 着生花蕾的第2～4 节叶片处枝梢的直径明显大于其他叶位处枝梢的直径, 而且淀粉和可溶性糖的含量高于其他节位枝梢。     

Relationship between MAT1 expression and clinicopathological features of pancreatic cancers

AIM: To investigate the expression of MAT1 protein in pancreatic cancers and the relationship between MAT1 and clinicopathological features of pancreatic cancers. METHODS: 94 surgical specimens, including 70 pancreatic cancers, 10 pancreatic benign tumors, 14 chronic pancreatitis and 10 autopsy normal pancreas tissues, were analyzed immunohistochemically, and then MAT1 expression and clinicopathological features were compared. RESULTS: MAT1 was expressed mainly in the cancer cells，and also in the fibroblasts, where it was localized within the cytoplasm and nuclear envelope. MAT1 expression was found in 75.7% (53/70) of the cancers, but not detected or weakly expressed in control tissues. There was a significant difference in expression of MAT1 among the above four tissues (P<0.01). Furthermore, MAT1 expression showed a significant correlation with TNM stage (P<0.05), but no correlation with other clinicopathological features. CONCLUSION: The MAT1 protein that is up-regulated in the pancreatic cancer may involve in pancreatic carcinogenesis, and MAT1 in primary lesion may be an useful marker for evaluating prognosis in patients with pancreatic cancer.     

Benches,fountains and trees: Using mixed-methods with questionnaire and smartphone data to design urban green spaces

Smartphones can help researchers track how people use green spaces and understand how design features impact their behaviors. However, when using this data to evaluate green space designs, researchers should be aware of human perceptions of the features within these environments. We contribute a mixed method approach that allows for comparison between how people report using green space features intended to support wellbeing, with how often they are used in common daily routines. As an illustration of this approach, we present the results of a case study conducted on a university campus that compares how outdoor design features are used by students with how these features are reported as being used. Specifically, we compare perceptions of 362 students about which campus design features create a sense of wellbeing, and which are near locations they report using, with the use of these features recorded by the smartphones of a separate group of 62 students. We found that there were large differences between locations students reported using, and locations tracked students used regularly. Features that were used more often during daily routines (low walls, food retail outlets), did not match features reported as helping create a sense of wellbeing in the questionnaire (benches, trees, and sunshine). Of all the design features we modeled, only water features were positively associated with use in the tracking data and supportive of wellbeing in the questionnaire data. Our findings point to the importance of using tracking data together with response data from questionnaires in mixed-method studies if designers want to locate features that the public consider as supportive to their wellbeing, in locations that will be regularly used.     

ACTL8 expression and its correlation with clinicopathological features and prognosis in breast cancer

AIM: To investigate the actin-like protein 8 (ACTL8) expression and its relationship with clinicopathological features and prognosis in breast cancer.METHODS: The expression of ACTL8 in human normal mammary epithelial cell line MCF-10A and 5 breast cancer cell lines was detected by Western blot. The expression of ACTL8 was also investigated by immunohistochemistry in 6 cases of breast cancer specimens with adjacent normal tissues. The data in 488 cases of breast specimens from TCGA dataset were downloaded, and the relationship between the mRNA expression of ACTL8 and the clinicopathological features and prognosis was analyzed.RESULTS: The expression of ACTL8 in 4 breast cancer cell lines was significantly higher than that in breast epithelial cell line MCF-10A.The level of the ACTL8 expression in breast tumors was significantly higher than that in the corresponding adjacent normal breast tissues. The mRNA expression of ACTL8 was correlated with age, tumor size, clinical TNM stage and lymph node metastasis of breast cancer patients (P < 0.05). The high expression level of ACTL8 mRNA indicated a poor prognosis of breast cancer patients. CONCLUSION: ACTL8 protein is highly expressed in breast cancer specimens and is closely correlated with the clinicopathological features and prognosis, suggesting that ACTL8 is a prognostic marker for breast cancer or a potential new target for treatment of breast cancer.     

Park features that encourage park visitation among older adults: A qualitative study

BackgroundParks provide many opportunities for promoting physical, social, and mental wellbeing among older adults and are therefore considered a good setting to promote healthy ageing. However, older adults are the age group least frequently observed visiting parks. To attract more older adults to parks, it is important to understand their needs and preferences for park design. The aim of this qualitative study was to gain in-depth information about older adults’ preferred park features for park visitation.MethodsSemi-structured interviews were conducted with 25 older adults aged > 60 years who visited a recently renewed urban park in Ghent, Belgium at least once since its renewal. The interviews were conducted in-park or in the nursing home adjacent to the park until saturation of information was obtained. All interviews were transcribed verbatim, pseudonymised, and analysed by inductive content analysis using NVivo 12 software.ResultsThe most preferred park activities were walking, sitting, and watching the environment. The park features liked by older adults were good quality and accessible walking paths, nature and vegetation, openness and structural layout of the park, and sufficient and good quality sitting areas. The park features that they did not like mostly related to poor park maintenance.ConclusionsThis study provides an overview of park features that older adults perceive as important for park visitation. It is the first qualitative study in Belgium to assess which park features entice older adults to visit parks, and it contributes to the limited European knowledge on this topic. The evidence can help urban planners, landscape architects, and policymakers to (re)design attractive local parks that promote healthy ageing.     

Detecting dominant landscape objects through multiple scales: An integration of object-specific methods and watershed segmentation

Complex systems, such as landscapes, are composed of different critical levels of organization where interactions are stronger within levels than among levels, and where each level operates at relatively distinct time and spatial scales. To detect significant features occurring at specific levels of organization in a landscape, two steps are required. First, a multiscale dataset must be generated from which these features can emerge. Second, a procedure must be developed to delineate individual image-objects and identify them as they change through scale. In this paper, we introduce a framework for the automatic definition of multiscale landscape features using object-specific techniques and marker-controlled watershed segmentation. By applying this framework to a high-resolution satellite scene, image-objects of varying size and shape can be delineated and studied individually at their characteristic scale of expression. This framework involves three main steps: 1) multiscale dataset generation using an object-specific analysis and upscaling technique, 2) marker-controlled watershed transformation to automatically delineate individual image-objects as they evolve through scale, and 3) landscape feature identification to assess the significance of these image-objects in terms of meaningful landscape features. This study was conducted on an agro-forested region in southwest Quebec, Canada, using IKONOS satellite data. Results show that image-objects tend to persist within one or two scale domains, and then suddenly disappear at the next, while new image-objects emerge at coarser scale domains. We suggest that these patterns are associated to sudden shifts in the entire image structure at certain scale domains, which may correspond to critical landscape thresholds.This revised version was published online in May 2005 with corrections to the Cover Date.     

How do urban park features affect cultural ecosystem services: Quantified evidence for design practices

Cultural ecosystem services (CES) in urban parks are associated with nature contact willingness and health outcomes of urban residents. However, practical knowledge on how to manage urban park features to enhance CES is still lacking, especially on more detailed scales. This study developed a practice-oriented workflow for exploring design-related indicators that affect CES by considering four aspects of urban park features, including distance to elements, density of elements, land cover proportion, and landscape diversity. Then the workflow was implemented in a case study by taking six urban parks in Beijing as study areas. Three CES types were identified with outdoor social media images, including recreation value, aesthetic value, and social interaction value. Statistical analyses indicated that a combination of the four aspects of urban park features within a specific service radius was the most significant factor in explaining CES. The importance of design-related indicators for enhancing different CES types was also identified. Density of facilities, proportion of tree canopy-shaded ground, and richness of land cover types were proved important for all the three CES types and therefore could be concerned in urban park design practices. Based on these findings, this study further proposed landscape site design strategies and three adaptive design cases for enhancing different CES types, which could provide evidence-based and practical solutions for managers and landscape architects.     

Immunohistochemical localization of phospholipase D in strawberry (Fragaria ananassa Duch.) fruits

Phospholipase D, the key enzyme involved in membrane phospholipid catabolism, was localized in strawberry (Fragaria ananassa Duch.) fruits during development using immunohistochemical techniques. Typical structural features such as the nucleus, cell wall, plasma membrane, mitochondria and vacuole were noticeable in cells of young strawberry fruits. Cytoplasmic structural features were less pronounced in fully grown and turning red fruits, except cell wall, which was considerably enlarged. Also, extensive microvesiculation from the plasma membrane was noticeable in ripening fruits. The number of visible gold particles indicative of phospholipase D increased during development. Phospholipase D was found to be associated with membranous structures and vacuole. Interestingly, gold-particles could also be observed in the cell wall space in ripening fruits suggesting that cytosolic contents may have leaked into the cell wall space as a result of membrane deterioration and loss of compartmentalization. The role of phospholipase D during development and ripening of strawberry, a non-climacteric fruit, is discussed.