The effect of Rhizobium spp. inoculation on seed quality of bean in Turkey     

Kücük C  Kivanç M 《Pakistan journal of biological sciences: PJBS》2008,11(14):1856-1859

Rhizobium spp. (local isolate) was used to inoculate three bean (Phaseolus vulgaris L.) varieties; Akman 98, G?ynük 98 and Sehirali 90, in a factorial field experiment. The objective of the experiment was to study effect of inoculation on seed yield, protein range, seed weight, non-soaker capacity and hydration index. Rhizobium spp. inoculation and nitrogen fertilizer significantly increased characters tested. This study revealed that inoculation with Rhizobium spp. improved seed quality.  相似文献   

混流式水轮机全流道三维非定常湍     

黄剑峰  张立翔  王文全c 《中国农村水利水电》2009,(1):101-105

基于大涡模拟动态亚格子湍流模型和三维时均N-S方程,应用非结构网格的滑移网格技术,进行了混流式水轮机全流道动静干扰的三维非定常湍流计算。捕捉到了水轮机各过流部件内的流场随时间的变化情况。计算结果表明水轮机中的水流处于复杂的湍流运动状态,随着时间的推移,水轮机内部湍流运动变化剧烈,得到的计算结果更接近实际流场的分布。  相似文献   

小清河干流济南城区段主河槽河岸     

窦实  曹升乐  王好芳c 《中国农村水利水电》2008,(3):112-114

以具体工程小清河济南城区段为例,研究水库型河道在确定主河槽河岸设计高程应考虑的影响因素。提出对于既有景观功能又有防洪要求的河道,主河槽河岸设计高程应分汛期与非汛期进行考虑,综合防洪要求及景观效果确定所需高程。  相似文献   

Optimization of a liquid chromatography-tandem mass spectrometry method for quantification of the plant lignans secoisolariciresinol, matairesinol, lariciresinol, and pinoresinol in foods     

Milder IE  Arts IC  Venema DP  Lasaroms JJ  Wähälä K  Hollman PC 《Journal of agricultural and food chemistry》2004,52(15):4643-4651

A liquid chromatography-tandem mass spectrometry (LC-MS/MS) method was developed for the quantification of the four major enterolignan precursors [secoisolariciresinol, matairesinol, lariciresinol, and pinoresinol] in foods. The method consists of alkaline methanolic extraction, followed by enzymatic hydrolysis using Helix pomatia (H. pomatia) beta-glucuronidase/sulfatase. H. pomatia was selected from several enzymes based on its ability to hydrolyze isolated lignan glucosides. After ether extraction samples were analyzed and quantified against secoisolariciresinol-d8 and matairesinol-d6. The method was optimized using model products: broccoli, bread, flaxseed, and tea. The yield of methanolic extraction increased up to 81%, when it was combined with alkaline hydrolysis. Detection limits were 4-10 microg/(100 g dry weight) for solid foods and 0.2-0.4 microg/(100 mL) for beverages. Within- and between-run coefficients of variation were 6-21 and 6-33%, respectively. Recovery of lignans added to model products was satisfactory (73-123%), except for matairesinol added to bread (51-55%).  相似文献   

安徽省县域测土配方施肥决策系统开发与应用研究     

<  SPAN style= 《中国农学通报》2009,25(4):283-287

随着农业部测土配方施肥项目的开展,各项目县通过采样化验、布置试验等,获得了大量数据,迫切要针对县域的施肥决策系统,以便分利用这些数据指导当地农业生产。本文详细介绍了安徽省县域测土配方施肥决策系统的设计原则,开发流程,数据库与模型库的建立,功能实现过程以及应用等内容。  相似文献   

从十六世纪到十九世纪的油画中研究栽培植物的历史     

A.c.哲温  W.A.布兰登堡  杭悦宇  王年鹤 《农业考古》1992,(3)

十六世纪到十九世纪产生于佛兰德和荷兰的油画是研究栽培植物发展的有用资料,他们显示了那一时期的文献所未描绘或者只是粗略地提及的许多蔬菜、水果和观赏植物。研究作物历史有多方面的资料,如从驯育到今天仍然生活和被保存的植物材料;在植物学和农业文献中的描述;插图等等。那些高度驯化的植物原始的和半驯化阶段的活材料极为稀少,人们可能偶尔在一些未充分发展农业的地区发现。随着世界范围内的许多  相似文献   

Relationship of retinoid and carotenoid metabolism with caecotrophy in rabbits     

Kertin A  Bárdos L  Deli J  Oláh P 《Acta veterinaria Hungarica》2005,53(3):309-318

The relationship of retinoid and carotenoid metabolism with caecotrophy was studied in adult female New Zealand White rabbits kept in individual metabolic cages. Caecotrophy was prevented by the use of plastic collars. The dry matter, crude protein, fibre, fat and ash contents of hard and soft faecal samples were determined. The retinoid (retinol and retinyl palmitate) and carotenoid (canthaxanthin, beta-carotene, beta-cryptoxanthin, lutein and zeaxanthin) levels of the blood, liver, kidney, caecal content and faeces were also measured by high-performance liquid chromatography (HPLC). The prevention of caecotrophy resulted in a significant decrease of blood retinol (P < 0.001) and retinyl palmitate (P < 0.01) concentration but it did not cause any significant change in the retinol and retinyl palmitate contents of the liver and kidney. The caecal content (25.78 +/- 6.87 microg/g) and the soft faeces (34.52 +/- 10.48 microg/g) contained the retinoids in similar amounts. Various carotenoids were found in considerable amounts in different types of faeces, while in the tissues (blood, liver and kidney) these pigments did not occur in substantial amounts. Total carotenoid concentration was similar in the caecal content (11.23 microg/g) and in the caecotroph (13.85 microg/g). On the basis of the results it can be assumed that the retinoid content of rabbit feed could be lowered in the presence of adequate caecal function and caecotrophy.  相似文献   

Identification of urinary metabolites of the red clover isoflavones formononetin and biochanin A in human subjects     

Heinonen SM  Wähälä K  Adlercreutz H 《Journal of agricultural and food chemistry》2004,52(22):6802-6809

Dietary supplements manufactured from red clover are widely marketed to provide the beneficial health effects of isoflavones without changing the original diet. In this study the metabolism of formononetin and biochanin A, the principal isoflavones of red clover, was studied in human subjects. Seven women ingested four red clover dietary supplements, and the metabolites of the isoflavones were identified in their urine samples. The structures of trimethylsilyl derivatives of the metabolites were established by GC-MS. New reduced metabolites of formononetin (dihydroformononetin and angolensin) and biochanin A (dihydrobiochanin A and 6'-hydroxyangolensin) were identified in urine samples using authentic reference compounds. Possible metabolic pathways are presented for the red clover isoflavones formononetin and biochanin A.  相似文献   

Interaction between salsolinol (SAL) and thyrotropin-releasing hormone (TRH) or dopamine (DA) on the secretion of prolactin in ruminants   总被引：2，自引：0，他引：2  

Hashizume T  Shida R  Suzuki S  Kasuya E  Kuwayama H  Suzuki H  Oláh M  Nagy GM 《Domestic animal endocrinology》2008,34(3):327-332

We have recently demonstrated that salsolinol (SAL), a dopamine (DA)-derived compound, is present in the posterior pituitary gland and is able to stimulate the release of prolactin (PRL) in ruminants. The aim of the present study was to clarify the effect that the interaction of SAL with thyrotropin-releasing hormone (TRH) or DA has on the secretion of PRL in ruminants. A single intravenous (i.v.) injection of SAL (5mg/kg body weight (b.w.)), TRH (1microg/kg b.w.), and SAL plus TRH significantly stimulated the release of PRL in goats (P<0.05). The cumulative response curve (area under the curve: AUC) during 120min was 1.53 and 1.47 times greater after the injection of SAL plus TRH than either SAL or TRH alone, respectively (P<0.05). A single i.v. injection of sulpiride (a DA receptor antagonist, 0.1mg/kg b.w.), sulpiride plus SAL (5mg/kg b.w.), and sulpiride plus TRH (1microg/kg b.w.) significantly stimulated the release of PRL in goats (P<0.05). The AUC of PRL during 120min was 2.12 and 1.78 times greater after the injection of sulpiride plus TRH than either sulpiride alone or sulpiride plus SAL, respectively (P<0.05). In cultured bovine anterior pituitary (AP) cells, SAL (10(-6)M), TRH (10(-8)M), and SAL plus TRH significantly increased the release of PRL (P<0.05), but the additive effect of SAL and TRH detected in vivo was not observed in vitro. In contrast, DA (10(-6)M) inhibited the TRH-, as well as SAL-induced PRL release in vitro. All together, these results clearly show that SAL can stimulate the release of PRL in ruminants. Furthermore, they also demonstrate that the additive effect of SAL and TRH on the release of PRL detected in vivo may not be mediated at the level of the AP, but that DA can overcome their releasing activity both in vivo and in vitro, confirming the dominant role of DA in the inhibitory regulation of PRL secretion in ruminants.  相似文献   

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