Site-Specific Nitrogen Management in Rice Using Remote Sensing and Geostatistics     

Rahul Tripathi  A. K. Nayak  R. Raja  Mohammad Shahid  S. Mohanty  B. Lal 《Communications in Soil Science and Plant Analysis》2017,48(10):1154-1166

Proper doses of nitrogenous fertilizer are most important for rice production system because a large part of the nitrogen may be lost if it is not applied judiciously. A study was conducted covering five blocks of Balasore and two blocks of Bhadrak districts. Soil samples were collected randomly, and field visit was conducted during peak vegetative stage of rice. Two approaches have been used in this study for estimating the site-specific nitrogen (N) requirement in the study area. In one approach, geostatisical analysis and kriging was used to develop the soil test–based N recommendation map by which a minimum of 72 kg N ha^?1 and maximum of 94 kg N ha^?1 were recommended. In a second approach, remote sensing was used and N recommendation map was developed using the moderate-resolution imaging spectroradiometer (MODIS) leaf area index (LAI) and normalized difference vegetation index (NDVI) satellite data, and a minimum requirement of 60 kg N ha^?1 and maximum of 120 kg N ha^?1 was estimated through this approach.  相似文献   

Differential expression of toll-like receptor mRNA in selected tissues of goat (Capra hircus)     

K.G. Tirumurugaan  S. Dhanasekaran  G. Dhinakar Raj  A. Raja  K. Kumanan  V. Ramaswamy 《Veterinary immunology and immunopathology》2010,133(2-4):296-301

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Antiviral activity of 3‐(1‐chloropiperidin‐4‐yl)‐6‐fluoro benzisoxazole 2 against White spot syndrome virus in Freshwater crab,Paratelphusa hydrodomous          下载免费PDF全文

Chavva Bala Rajashekar Reddy  Sundaram Dinesh  Natarajan Anusha  Toshiaki Itami  Sabbasani Rajasekhara Reddy  Raja Sudhakaran 《Aquaculture Research》2016,47(8):2677-2681

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Ellagic acid modulates antioxidant status, ornithine decarboxylase expression, and aberrant crypt foci progression in 1,2-dimethylhydrazine-instigated colon preneoplastic lesions in rats     

Kumar KN  Raja SB  Vidhya N  Devaraj SN 《Journal of agricultural and food chemistry》2012,60(14):3665-3672

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Association of bovine KISS1 single nucleotide polymorphisms with reproductive traits in Indian Cattle     

Umesh Singh  Rani Alex  Sushil Kumar  Rajib Deb  Thiruvothur Venkatesan Raja  Shaily Singhal  Gyanendra Singh Sengar  Bharat Singh Rathod  Kotikalapudi Srirama Murthy  Nitin Vasant Rao Patil 《Reproduction in domestic animals》2020,55(8):922-930

Kisspeptins, a family of neuropeptide encoded by the Kiss1 gene, have emerged as crucial regulator of fertility and reproduction by regulating the hypothalamic–pituitary–gonadal axis. The present study was aimed to identify and associate SNPs in the KISS1 gene with reproductive traits in cattle of Indian origin. DNA samples collected from 300 individual cows of three Indian dairy breeds (Gir, Kankrej and Frieswal) of cattle were used in the study. The SNPs of KISS1 gene were identified with PCR-RFLP and sequence analysis using two sets of primer pairs. A total of 5 SNPs were identified in the targeted region of which, two were selected for screening the population and association studies. The analysis revealed that genotypes of rs442633552G>A and rs42022871C>T had a significant association with dry period. The SNP rs42022871C>T also established significant role in milk production traits, and selection of TT-genotyped animals will improve the reproduction and production potential of the animals.  相似文献   

SEVERITY OF SALINITY ACCURATELY DETECTED AND CLASSIFIED ON A PADDOCK SCALE WITH HIGH RESOLUTION MULTISPECTRAL SATELLITE IMAGERY     

R. Setia  M. Lewis  P. Marschner  R. Raja Segaran  D. Summers  D. Chittleborough 《Land Degradation \u0026amp; Development》2013,24(4):375-384

We hypothesised that digital mapping of various forms of salt‐affected soils using high resolution satellite imagery, supported by field studies, would be an efficient method to classify and map salinity, sodicity or both at paddock level, particularly in areas where salt‐affected patches are small and the effort to map these by field‐based soil survey methods alone would be inordinately time consuming. To test this hypothesis, QuickBird satellite data (pan‐sharpened four band multispectral imagery) was used to map various forms of surface‐expressed salinity in an agricultural area of South Australia. Ground‐truthing was performed by collecting 160 soil samples over the study area of 159 km². Unsupervised classification of the imagery covering the study area allowed differentiation of severity levels of salt‐affected soils, but these levels did not match those based on measured electrical conductivity (EC) and sodium adsorption ratio (SAR) of the soil samples, primarily because the expression of salinity was strongly influenced by paddock‐level variations in crop type, growth and prior land management. Segmentation of the whole image into 450 paddocks and unsupervised classification using a paddock‐by‐paddock approach resulted in a more accurate discrimination of salinity and sodicity levels that was correlated with EC and SAR. Image‐based classes discriminating severity levels of salt‐affected soils were significantly related with EC but not with SAR. Of the spectral bands, bands 2 (green, 520–600 nm) and 4 (near‐infrared, 760–900 nm) explained the majority of the variation (99 per cent) in the spectral values. Thus, paddock‐by‐paddock classification of QuickBird imagery has the potential to accurately delineate salinity at farm level, which will allow more informed decisions about sustainable agricultural management of soils. Copyright © 2011 John Wiley & Sons, Ltd.  相似文献   

Protective effect of berberine on expression pattern of apoptotic, cell proliferative, inflammatory and angiogenic markers during 7,12-dimethylbenz(a)anthracene induced hamster buccal pouch carcinogenesis     

Manoharan S  Sindhu G  Nirmal MR  Vetrichelvi V  Balakrishnan S 《Pakistan journal of biological sciences: PJBS》2011,14(20):918-932

Investigation of expression pattern of molecular markers in oral epithelial tissues would help to assess the cell differentiation and proliferation as well as early diagnosis of precancerous and cancerous lesions of the oral cavity. Aim of the present study was to investigate the protective effect of berberine on expression pattern of apoptotic, cell proliferative, inflammatory and angiogenic markers during 7,12-dimethylbenz(a)anthracene (DMBA) induced hamster buccal pouch carcinogenesis. Immunohistochemical staining [p53, Bcl-2, Bax, Proliferating Cell Nuclear Antigen (PCNA) and Vascular Endothelial Growth Factor (VEGF)], Enzyme Linked Immuno Sorbent Assay (ELISA) [c-fos, COX-2, caspase-3 and -9] and Real-Time PCR [Cyclin D1 and NFkappaB] were utilized to assess the expression pattern of molecular markers in DMBA induced hamster buccal pouch carcinogenesis. Over expression of mutant p53, PCNA, Bcl-2 and VEGF were noticed in hamsters treated with DMBA alone. Decreased expression of Bax protein was noticed in hamsters treated with DMBA alone. Increased expression of C-fos, COX-2, NFkappaB and Cyclin D1 and decreased activities of caspase-3 and -9 were also noticed in hamsters treated with DMBA alone. Oral administration ofberberine at a dose of 75 mg kg(-1) b.w. brought back the expression of above mentioned molecular markers to near normal pattern in hamsters treated with DMBA. The present results thus suggest that berberine has potent anti-inflammatory, anti-angiogenic, anti-cell proliferative and apoptosis inducing properties in DMBA induced oral carcinogenesis.  相似文献   

Molecular characterization of the Indian strain of <Emphasis Type="Italic">Apple mosaic virus</Emphasis> isolated from apple (<Emphasis Type="Italic">Malus domestica</Emphasis>)     

Tombisana Thokchom  Tanuja Rana  Vipin Hallan  Raja Ram  Aijaz A. Zaidi 《Phytoparasitica》2009,37(4):375-379

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Molecular characterization and variability analysis of <Emphasis Type="Italic">Apple scar skin viroid</Emphasis> in India     

Yashika Walia  Yogesh Kumar  Tanuja Rana  Pooja Bhardwaj  Raja Ram  Pritam Das Thakur  Usha Sharma  Vipin Hallan  A. A. Zaidi 《Journal of General Plant Pathology》2009,75(4):307-311

Apple scar skin viroid (ASSVd) infection is a major limitation to apple fruit quality and causes huge economic losses. In surveys of apple orchards in the northern Indian state of Himachal Pradesh, fruits with dappling symptoms were noticed. ASSVd was detected from these fruits and molecularly characterized. Ten clones from three isolates were sequenced, of which seven were new sequence variants of ASSVd. The clones had significant sequence variability (94–100%) with each other. Variability was more common in the pathogenic domain of the viroid genome. Four of the clones were 330 nucleotides (nt) long, and the other six had an additional nucleotide. Phylogenetic analysis showed close affinity of the present isolates with some Chinese and Korean isolates. The study reports seven new variants of ASSVd and also provides the first molecular evidence of viroid infection (ASSVd) in apple in India.  相似文献   

Hypoglycemic activity of Nymphaea stellata leaves ethanolic extract in alloxan induced diabetic rats     

Dhanabal SP  Raja MK  Ramanathan M  Suresh B 《Fitoterapia》2007,78(4):288-291

The ethanolic extract of leaves of Nymphaea stellata given by oral route to diabetic rats at dose of 100 and 200 mg/kg/day for seven days reduced significantly by 31.6 and 42.6 % the plasma glucose level increased by intraperitoneal injection of 120 mg/day of alloxan. Moreover, the treatment significantly affected the plasma level of cholesterol and triglyceride.  相似文献