越南不同龙眼品种品质分析比较(英文)   总被引：1，自引：0，他引：1  

张晓芳  罗心平  刘光华  黄家雄  张惠云  NGUYEN Dinh Tue  TRAN Mihn Hoa 《（《农业科学与技术》）编辑部》2011,(10)

[目的]筛选出适合越南当地生产的龙眼品种。[方法]分别对引种至越南农科院北部山区农林研究所内栽培的5个龙眼品种的果实植物学性状和品种果实性状进行了比较分析。[结果]筛选出了可作为鲜食的优良龙眼品种PMP6,PHS1-1以及可用于加工的优良品种HuongChi。[结论]本研究将对越南北部山区的龙眼生产、育种提供参考。  相似文献   

Estimates of nutrient discharge from striped catfish farming in the Mekong River,Vietnam, by using a 3D numerical model     

Tran Thi Ngoc Trieu  Minjiao Lu 《Aquaculture International》2014,22(2):469-483

A simulation was carried out by using a 3D numerical model for estimate the nutrient level discharged from striped catfish, Pangasianodon hypophthalmus intensively farming in the Mekong River, Vietnam. The simulated period was dry season from April 24, 2007, to April 27, 2007. Both dissolved and particulate forms of nutrients were simulated. A real status of water environment and scenario of discharge after applying fishpond effluent for irrigation of rice field were estimated in My Hoa Hung fish farm, An Giang Province. Simulated results were verified by observed data. Our results showed that nutrient levels at farming area in dry season were temporarily high and local. Applying waste water from the fishpond for irrigation of rice field could greatly reduce nutrients level in the fish farming area, the nutrient levels were 77 % for total nitrogen and 73 % for phosphorus. Therefore, recycling nutrient from fishpond effluent for irrigation of rice field illustrated an effective technology for pollution reduction which is a crucial issue to enable sustainable development of intensively farmed striped catfish.  相似文献   

Area‐wide mass trapping by pheromone‐based attractants for the control of sugar beet weevil (Bothynoderes punctiventris Germar,Coleoptera: Curculionidae)          下载免费PDF全文

Zrinka Drmić  Miklós Tóth  Darija Lemić  Dinka Grubišić  Milan Pospišil  Renata Bažok 《Pest management science》2017,73(10):2174-2183

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Undernutrition in the parental and first generation provokes an organ‐specific response to oxidative stress on neonates of second filial generation of Wistar rats          下载免费PDF全文

R. Baños‐Gómez  N. S. Cruz‐Cansino  T. Suarez‐Diéguez  C. Valadez‐Vega  E. Ramírez‐Moreno  E. Alanís‐García  J. A. Ariza‐Ortega  J. J. Manríquez‐Torres  E. Zamora‐Romo  L. Delgado‐Olivares 《Journal of animal physiology and animal nutrition》2017,101(2):267-274

Undernutrition induces an increase of the oxidative stress that can predispose offspring to various diseases in adulthood through epigenetic reprogramming. The aim of this study was to evaluate the effects of intergenerational undernutrition on protein oxidation and antioxidant defence response on liver, heart and brain of the second‐generation neonates (F₂) of undernourished rats. For this purpose, both parents in parental (F₀) and first generation (F₁) were fed with a low‐nutrient diet. Body mass and length decreased (p < 0.05) in F₀, F₁ and F₂ being the F₁ males who exhibited a greater mass loss. A decrease in plasma albumin concentration was observed in F₂ neonates (p < 0.05) and also a mass loss of liver, heart and brain (p < 0.05), although proportionally to body length reduction. Undernutrition increased levels of protein oxidation in liver and heart (p < 0.05) but not in brain (p > 0.05) while catalase activity increased only in brain (p < 0.05). In summary, intergenerational undernutrition modifies the antioxidant status through an organ‐specific response, on F₂ neonate rats, where the brain increased catalase activity to prevent a severe oxidative damage and support the vital functions of this key organ to maintain vital functions.  相似文献   

蒙药植物肋柱花种子萌发条件研究          下载免费PDF全文

李旭新  杨恒山  包金花  孙德智 《农学学报》2017,7(9):48-51

选用不同的发芽床和浸种温度对肋柱花种子进行发芽试验,以期找出适于种子发芽的前期处理条件,为提高其繁殖效率,更为进一步制定种子质量检验方法提供理论依据。采用培养皿发芽法,研究不同发芽床类型和浸种温度对肋柱花种子发芽的影响。结果表明：砂上培养条件下种子发芽率和发芽指数最高,种子腐烂率最低,而砂间培养种子腐烂率最高;40℃浸种温度处理下种子的发芽率最高,随着浸种温度升高,发芽率逐渐降低。肋柱花种子适宜发芽条件为浸种温度为40℃,砂上为种子发芽最适发芽床。  相似文献   

Biological control of the millet head miner Heliocheilus albipunctella in the Sahelian region by augmentative releases of the parasitoid wasp Habrobracon hebetor: effectiveness and farmers’ perceptions     

Malick N. Ba  Ibrahim B. Baoua  Mamadou N’Diaye  Clementine Dabire-Binso  Antoine Sanon  Manuele Tamò 《Phytoparasitica》2013,41(5):569-576

On-farm augmentative releases of the parasitoid Habrobracon hebetor (Say) for controlling the millet head miner (MHM) Heliocheilus albipunctella (de Joannis) were tested in Burkina Faso, Mali and Niger from 2007 to 2009. In addition, a survey of farmers’ perceptions of insect pests, with particular focus on MHM, and the biological control program (BCP) was carried out. There was a significant increase of MHM parasitization rate after the releases, with up to 97% mortality. The survey on farmers’ perceptions revealed a fair knowledge of the MHM and the ability of farmers to describe the pest and the damage it caused. Farmers claimed that the biocontrol agent H. hebetor is effective and perceived a significant gain in grain yield due to this control strategy. Implications of these findings for a large extension of the MHM biocontrol program are discussed.  相似文献   

Effect of salinity on uptake and distribution of chloride and sodium in some citrus scion-rootstock combinations     

J. Bañuls  F. Legaz  E. Primo-Millo 《The Journal of Horticultural Science and Biotechnology》2013,88(6):715-724

The effect of scion on Cl and Na accumulation and the transport properties of rootstocks was investigated using grafted plants. The combinations of Navel orange (C. sinensis (L.) Osb.) and Clementine (C. clementine Hort. ex Tan) scions on Cleopatra mandarin (C. reticulata Blanco) and Troyer citrange (C. sinensis X P. trifoliata) rootstocks, were used in all experiments. Plants were grown under glasshouse conditions for 14 weeks supplied with nutrient solution containing 0-60 mM NaCl. Relative growth and defoliation were studied. The reduction in relative growth caused by salt, treatments was more scion- dependent, whereas defoliation was more rootstock-dependent. Changes in leaf and root ionic contents were measured. Scions on Cleopatra mandarin accumulated less Cl in their leaves and roots than did scions on Troyer citrange. The distribution of Cl in the whole plant showed that Clementine had a reduced ability to transport Cl from roots to leaves. However, sodium content was lower in scions on Troyer citrange than Cleopatra mandarin. The distribution of Na in the whole plant showed that Troyer citrange restricted the transport of Na to the scion. There was little difference in P content in all combinations. Salinity decreased sharply the N content of leaves and roots in plants on Troyer citrange, but there was only a slight effect in plants on Cleopatra mandarin. The pattern of N accumulation was inversely correlated with the pattern of Cl accumulation. Salinity decreased K, Ca and Mg contents in leaves and roots of all combinations.  相似文献   

The effect of ethephon on the growth and development of Liatris spicata     

S. BañóN  A. González  J. A. Fernández  J. A. Franco 《The Journal of Horticultural Science and Biotechnology》2013,88(6):851-855

Summary

The first experiment studied the effect of applying ethylene biosynthesis regulating compounds (ethephon 1000 ppm, silver thiosulphate 0.4 mM and cobalt chloride 5 mM) on the growth and development of Liatris spicata cv. Callilepis. The results pointed to the important growth retardant properties of ethephon and the increased number of flowering stems per corm which could be obtained by pre-planting application. A second experiment aimed to optimize ethephon treatment in Liatris by applying the growth retardant in different concentrations (100, 700, 1300, 1900 and 2500 ppm) at three stages of development: stage I (pre-planting), stage II (immediately after the formation of basal leaf rosette) and stage III (when the main shoot began its rapid longitudinal growth). Besides confirming the effects produced by ethephon in the first experiment, the results suggested that the application of high ethephon concentrations (1900 and 2500 ppm) during stage II of growth produced many miniature flowering stems coming from the principal or secondary shoot.  相似文献   

Influence of water deficit and low air humidity in the nursery on survival of Rhamnus alaternus seedlings following planting     

S. Bañon  J. Ochoa  J. A. Franco  M. J. Sánchez-Blanco 《The Journal of Horticultural Science and Biotechnology》2013,88(4):518-522

Summary

The effect of irrigation and air humidity on the water relations and root and shoot growth of Rhamnus alaternus L. during the nursery phase was considered to evaluate the resulting degree of hardening obtained by these treatments. R. alaternus seedlings were pot-grown in two greenhouses of equal characteristics. In one of these greenhouses air humidity was controlled using a dehumidifying system, while in the other one the environmental conditions were not artificially modified. In each greenhouse, two irrigation treatments were used. Thus, four different treatments were applied during the nursery phase (January-May): 1) control air humidity + control irrigation; 2) control air humidity + deficit irrigation; 3) low air humidity + control irrigation; 4) low air humidity + deficit irrigation. In May, plants of all treatments were transplanted and grown in good environmental and irrigation conditions for one month (17 May–20 June), after which they received no irrigation until the end of the experiment (14 July). Low air humidity and water deficit reduced all shoot growth parameters during the nursery phase, however the root growth was not significantly affected by air humidity and even increased under the water deficit. The reduction in leaf water potential under water stress was induced by tissue dehydration since leaf turgor potential also decreased and non-osmotic adjustment was observed. The drought effects on water relations were similar in both low and high air humidity. The leaf stomatal conductance was also reduced by both types of stress, leading to a decrease in the rate of photosynthesis at the end of the nursery phase. Both water deficit and low air humidity showed their value as nursery acclimation processes, improving the survival of seedlings following transplanting and non-irrigation conditions (establishment phase). The stomatal regulation and a shift in the allocation of assimilates from shoot to root were the acclimation mechanisms showed by R. alaternus under both types of stress. The accumulated effects in low air humidity and water deficit plants could explain the highest percentage of survival at the end of the establishment period (97%) for the combined treatment.  相似文献   

Verte and Romaine lettuce varieties (Lactuca sativa) show differential responses to high NaCl concentrations     

Olfa Baâtour  Jun Huang  Nawel Nasri  Imen Ben Salah  Imen Tarchoun  Maha Zaghdoudi  Margaret Y. Gruber  Mokhtar Lachaâl  Zeineb Ouerghi  Abdelali Hannoufa 《植物养料与土壤学杂志》2012,175(4):641-648

In this study, we report on the relationship between individual antioxidant carotenoids, phenolic fractions, and flavonoids and attenuating NaCl toxicity in two contrasting varieties of lettuce (Lactuca sativa L., var. Verte and Romaine), as a means of developing more precise targets for lettuce breeding. In seedling leaves, carotenoid levels increased under NaCl stress in Verte, but remained unchanged in Romaine. Chlorogenic acid (CGA), a soluble polyphenol abundantly present in leaves, was the only phenolic acid that accumulated significantly in both varieties and was predominant under salinity. Remarkably, CGA was more prominent in Verte than Romaine at moderate salinity levels (100 mM). Foliar flavonoid levels were also differentially increased in both seedling types grown under 100 mM NaCl, but dropped significantly in both varieties under 200 mM NaCl. Germination, which was overall more salt‐resistant in Romaine, was significantly increased under salt stress by application of low dosage (10^–6 to10^–5 M) of CGA to Verte, but not to Romaine. These results suggest that CGA is involved in modulating NaCl‐induced oxidative‐stress responses during seed germination in Verte.  相似文献