Pork meat quality classification using Visible/Near-Infrared spectroscopic data     

M. Monroy  S. PrasherM.O. Ngadi  N. WangY. Karimi 《Biosystems Engineering》2010,107(3):271-276

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Determination of annual reproductive cycle in male sterlet,Acipenser ruthenus using histology and ultrasound imaging     

Golpour  Amin  Broquard  Coralie  Milla  Sylvain  Dadras  Hadiseh  Baloch  Abdul Rasheed  Saito  Taiju  Pšenička  Martin 《Fish physiology and biochemistry》2021,47(3):703-711

Fish Physiology and Biochemistry - The aim of this study was to evaluate seasonal testicular development in the cultured sterlet, Acipenser ruthenus. During annual sexual cycle of male sterlet,...  相似文献   

Is the use of recombinant cGnRH may be a future alternative to control the fish spawning? Let us go with the goldfish example     

Mohammadzadeh  Sedigheh  Milla  Sylvain  Ahmadifar  Ehsan  Karimi  Masoumeh  Dawood  Mahmoud A. O. 《Fish physiology and biochemistry》2021,47(4):951-960

The use of recombinant gonadotropin-releasing hormone (rGnRH) has very rarely been tested in fish to promote spawning. This study evaluated the impact of recombinant chicken gonadotropin-releasing hormone (rcGnRH) with metoclopramide on the release of sex steroids and final maturation induction in goldfish (Carassius auratus) broodstock. For this purpose, goldfish broodstock was divided into four groups and treated with 0.9% NaCl with 20 mg/kg metoclopramide (Met) (C); 10 μg/kg body weight (BW) rcGnRH with 20 mg/kg metoclopramide (rcGn10); 15 μg/kg BW rcGnRH with 20 mg/kg metoclopramide (rcGn15); and 20 μg/kg BW rcGnRH with 20 mg/kg metoclopramide (rcGn20). The capability of the rcGnRH for eliciting biological response was tested in vivo by evaluating the changes of 17β estradiol (E2), testosterone (T), and 17α, 20β-dihydroxy-4-pregnen-3-one (DHP) and the induced spawning. Blood samples were obtained at 0 h, 12 h, and 24 h after injection. The rcGn10, rcGn15, and rcGn20 treatments induced lower E2 concentration, especially 24 h post-injection. T levels were significantly higher in rcGn10, rcGn15, and rcGn20 treatments 12 h post-injection than at 0 h and then decreased at 24 h post-injection. Furthermore, the rcGnRH tested significantly enhanced DHP secretion in rcGn10, rcGn15, and rcGn20 treatments 12 h post-injection before a decline at 24 h post-injection. No significant difference between the sampling times was found in the C treatment for the 3 sex steroids tested. The results also displayed that rcGnRH at 10–20 µg/kg of body weight can trigger spawning with the highest speed and efficiency of spawning at 20 µg/kg. The obtained results represent a possible strategy for enhancing the artificial reproduction and ovulation of broodstock fish by rGnRH and further support the use of recombinant hormones to promote reproduction in aquaculture.

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收割机前部扩充配件对降低油菜收获损失的作用（摘选）     

M.Amin Asoodar  Y. Izadinia 《农业工程》2012,2(9):79-81

如今,伊朗油菜种植已经在其国内各地发展起来。然而,在整地、种植和收获过程中仍然存在一些问题。因此,需要采用新技术进行机械化收获。目前,谷物联合收获机生产公司除了生产常用设备,也生产一些安装在割台上的扩充配件。机械化收获系统尤其是常用的收获割台存在有相当大的损耗,同时熟练程度和需要特殊的油菜收获配套设备也是造成损失的原因之一。该试验研究一种割台和两种割台扩充配件对油菜收获损失的影响,从而确定损失量以及造成损失的原因。试验中涉及到一种常见割台,以及伊朗制造的采用机械侧刀切割器的Hamed割台扩充配件和采用液压侧刀切割器的Bizo割台扩充配件。试验采用随机完全区组设计,设6次重复。利用安置的托盘测定收获损失量。结果表明,随着割台运禾螺杆与切割器间距离的加大,割台扩充配件能降低损失量。因此,从总损失量考虑,常用割台与其他两种扩充配件相比差异显著。普通割台损失量为599 kghm2,而采用侧面垂直切割可以减少71 kghm2。此外,使用液压系统替代机械系统以及使用双层切割器替代单层刀杆都有助于降低损失量。试验结果显示,破损种子量为39.6 kghm2,占总产量的1.12%。试验结果是令人满意的,同时改善了联合收获机的性能。通过使用割台扩充配件有利于降低收获中的损耗。   相似文献   

Increasing antimicrobial resistance among Shigella isolates in the Bushehr, Iran     

Gharibi O  Zangene S  Mohammadi N  Mirzaei K  Karimi A  Gharibi A  Khajehiean A 《Pakistan journal of biological sciences: PJBS》2012,15(3):156-159

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A REVIEW OF PRODUCTION FRONTIER RESEARCH IN AQUACULTURE (2001–2011)     

Abdullahi Iliyasu  Zainal Abidin Mohamed  Mohd Mansor Ismail  Amin Mahir Abdullah  Salleh Mohamed Kamarudin  Hashim Mazuki 《Aquaculture Economics & Management (Blackwell Science)》2013,17(3):221-247

Most research works on the production frontier in aquaculture focus on efficiency measurement using either Stochastic Production Frontier (SPF) or Data Envelopment Analysis (DEA). The studies on productivity growth in aquaculture were limited, perhaps due to lack of time-series data. Nevertheless, total factor productivity analysis (TFP) in fish farms has started gaining popularity in recent years. In addition, the majority of the efficiency studies have centered on technical efficiency analysis but substantial increases in the output levels can be fully realized through improving overall economic efficiency. Therefore, this review suggests that future research should estimate all three efficiency indices (i.e., technical, allocative and economic efficiencies).  相似文献   

Evaluation of bermuda and paspalum grass types for urban landscapes under saline water irrigation     

Issa Yar Mohammad Karimi  Mohammed Abdul Mohsen Ali Salem  Abdul Jaleel Cheruth  Fayas Thayale Purayil  Sreeramanan Subramaniam 《Journal of plant nutrition》2018,41(7):888-902

In the arid regions, turfgrass cover is an integral part of landscape to protect the soil from erosion, enhance the aesthetic value, and improve the microclimate. The salinity and the scarcity of fresh water of the arid region are the major challenging factors in turfgrass production. Therefore, the need for salt tolerant turfgrass with functional quality is necessary to improve the turf performance. The detrimental effects of salinity include growth suppression, and lowered osmotic potential ultimately leading to firing of the leaf blades. In this context, the study was undertaken to determine the relative salt tolerance and growth response of turfgrass genotypes in order to recommend turfgrass cultivars that can tolerate high salinity irrigation and maintain excellent visual and functional qualities under United Arab Emirates (UAE) condition. The paspalum cultivars maintained the highest succulence percentage compared to the bermudagrass cultivars under enhanced salinity levels. The shoots count, fresh weight (FW), and dry weight (DW) were found highest in paspalum types. The chlorophyll a, chlorophyll b and the total chlorophyll content was found higher in bermuda grass types under high salinity levels. The bermudagrass cultivars showed significantly higher carotenoids, anthocyanins and proline compared to the paspalum types under salt stress condition. In the case of princess 77 and Yukon, an inherently high amount of proline was recorded which confirmed an increase up to 10,000 ppm and drastically declined beyond this concentration. Sea Dwarf paspalum and Sea Isle 2000 maintained uniformity in the proline level at all levels of salinity without significant variation. These findings point to the fact that both paspalum and bermuda types exhibited varied responses to different physiological and biochemical parameters under the saline conditions. Paspalum types have an edge over the bermudagrass in terms of shoot density, which is a potential factor in determining the high-quality turfs. Bermudagrass types can be applied in lower salinity conditions based on the responses as evidenced from the present results.  相似文献   

Sulfur uptake and translocation in maize (zea mays) grown in a high pH soil treated with elemental sulfur     

Mehdi Karimizarchi  Amin Soltangheisi  Aminuddin Husin  Mohd Khanif Yusop  Radziah Othman 《Journal of plant nutrition》2018,41(14):1798-1806

A glasshouse experiment was conducted to elucidate the influence of elemental sulfur (S) application rates (0, 0.5, 1.0, and 2.0 g S kg^?1 soil) on the release and uptake of S at 0, 20, and 40 days after incubation. Results showed that there was a progressive upward trend in maize leaves, stem, and root S content with application of elemental S. However, maize production followed a nonlinear model. Plants grown in untreated soils suffer from S deficiency and addition of elemental S at a rate of 0.5 g S kg^?1 soil alleviated S deficiency. The decrease in maize performance due to the highest S application rate was not related to S toxicity. The greatest leave, stem, and root productions were obtained at S concentrations of 0.41, 0.58, and 0.2%, respectively. Overall, application of elemental S at a rate of 0.5 g S kg^?1 soil is recommended for maize performance improvement.  相似文献   

Application of the consolidated species concept to identify the causal agent of strawberry anthracnose in Iran and initial molecular dating of the <Emphasis Type="Italic">Colletotrichum acutatum</Emphasis> species complex     

Kaivan Karimi  Asadollah Babai Ahari  Mahdi Arzanlou  Jahanshir Amini  Ilaria Pertot  Omar Rota-Stabelli 《European journal of plant pathology / European Foundation for Plant Pathology》2017,147(2):375-387

Anthracnose caused by Colletotrichum spp. is one of main strawberry diseases worldwide. The disease recently arrived in Iran and become epidemic in the Kurdistan province. A combination of morphological, molecular and pathogen-host interaction approaches (referred to the consolidated species concept) were applied to isolates from symptomatic strawberry tissues collected in Iran. Multi-gene phylogenetic analysis based on ITS-rDNA, beta-tubulin (TUB2) and glyceraldehyde-3-phosphate dehydrogenase (GAPDH) identified the species as the S5 clade of Colletotrichum nymphaeae. No significant intraspecies variation was observed in terms of morphology and pathogenicity. No significant genetic variation was observed among the isolates using inter simple sequence repeat analysis (ISSR) and primer pair combination of ERIC1/BOX and ERIC2/BOX fingerprinting markers. Based on the results of this study, it can be postulated that the C. nymphaeae population in Iran established itself from a single origin due to a founder effect. More generally, molecular dating based on relaxed clocks indicates co-radiation of C. nymphaeae S5 and strawberry plants and suggests high reciprocal specificity between the host and pathogen.  相似文献   

Effects of salinity,rootstock, and position of sampling on macro nutrient concentration of pomegranate cv. Gabri     

H. R. Karimi  N. Hassanpour 《Journal of plant nutrition》2017,40(16):2269-2278

In order to study the effects of salinity, rootstock, and position of sampling on macronutrient concentration of pomegranate (Punica granatum L.) cv. “Gabri,” a factorial experiment was conducted based on completely randomized design with 0 and 70 mM sodium chloride and calcium chloride (1:1), three graft combinations (Gabri non-grafted as a control, Gabri/Tab-o-larz, and Gabri/Malas-e-yazdi), and two positions of sampling (lower half and upper half shoot), with three replications. The results showed that mineral concentration of sodium, chloride, calcium, and potassium in shoot and root increased while that of magnesium decreased with salt treatment. The graft combination of Gabri on Tab-o-Larz rootstock had the lowest of sodium and chloride levels in the lower half shoot. Also, calcium concentration in the lower half shoot and potassium concentration in the upper half shoot were higher in the graft combination of Gabri on Tab-o-Larz rootstock. These results imply that Tab-o-Larz rootstock restricts the uptake or transport of sodium (Na) and chloride (Cl) from root to shoot; furthermore, it can be used as a salt-tolerant rootstock for pomegranate cv. Gabri.  相似文献