排序方式: 共有100条查询结果,搜索用时 15 毫秒
1.
Ujjwal Layek Krishnendu Bera Bubai Bera Sourabh Bisui Subir Kumar Pattanayek Prakash Karmakar 《农业工程》2021,41(3):243-252
The objective of this study was to test the hypothesis that pollinator sharing among cashew (Anacardium occidentale L.) and co-blooming magnetic bee-friendly plants facilitate higher productivity of cashew nuts. We examined the reproductive efficacy of cashew in three sites with distinct vegetation pattern (site I: sparsely distributed individuals, without association of co-blooming magnetic bee-friendly plant; site II: densely distributed individuals, without association of co-blooming magnetic bee-friendly plant; site III: densely distributed individuals, associated with co-blooming magnetic bee-friendly plants). Floral traits (including flowering time, flower architecture, number of flowers per panicle, hermaphrodite- male flower ratio, floral rewards, anthesis time and longevity of flower) does not differ among the study sites. According to the value of relative pollinator service (RPS), Apis dorsata was the primary pollinator of cashew and also shared by the co-blooming bee-friendly plants. The abundance of pollinators was the highest in site III and the lowest in site I. The nut yield was also significantly higher in site III cashew orchard which was in association with magnetic bee-friendly plants. Therefore, we can conclude that the association of co-blooming magnetic plants increased nut yield of cashew through the enhancement of pollinator's services. 相似文献
2.
3.
4.
Krishnendu Acharya Nilanjan Chakraborty Arun Kumar Dutta Swadesh Sarkar Rupa Acharya 《Archives Of Phytopathology And Plant Protection》2013,46(15):1501-1511
The objective of this work was to search out the probable molecule behind the activation of broad spectrum resistance during abiotic elicitors such as arachidonic acid, cupric chloride, chitosan, isonicotinic acid and salicylic acid mediated induced systemic resistance (ISR) in Raphanus sativus L. The elicitor compounds were sprayed on the radish leaves of healthy plant and after 24 h incubation a significant increase of β-1,3 glucanase, peroxidase, polyphenol oxidase and phenolics as well as a remarkable increase of nitric oxide (NO), a probable potent defense-signaling molecule in plant, was observed. Furthermore, treatment of the host with NO donor, sodium nitroprusside, also induced the same defense molecules. The results suggests that NO might be the signaling molecule during abiotic elicitor mediated ISR induction in the host system. 相似文献
5.
6.
Previously, factors governing distribution of leopard (Panthera pardus fusca) in forest habitats of the Indian subcontinent were unknown. The present study assessed the influence of different ecogeographic variables determining the distribution of leopards in and around Sariska Tiger Reserve through MaxEnt habitat suitability model based on camera trapping method. Camera trapping was used to collect presence/absence information in the study area from December 2008 to June 2010. Information of 11 macrohabitat characteristics and variables (habitat types, prey species, Normalized Difference Vegetation Index (NDVI), elevation, livestock, village, water source, etc.) were collected along with leopard presence data. The probability of presence of leopards increased with decreasing distance to water and increasing encounter rate of peafowl (Pavo cristatus), chital (Axis axis), sambar (Rusa unicolor), and wild pig (Sus scrofa). It was found that the probability of presence of leopards increased with increasing area of Zizyphus mixed forest patches and NDVI. Results of this study showed that the probability of presence of leopards was higher in habitat types with intermediate cover, high wild prey base, and water sources. They also indicated that leopards are not always ‘generalists’ showing some degree of specialization, at least in their choice of habitat, and this information is useful for conserving leopard in human-dominated landscapes. 相似文献
7.
Suchismita Subadini Ram Sankar Panigrahy Nishesh Kumar Gupta Krishnendu Bera Harekrushna Sahoo 《Luminescence》2022,37(6):876-882
A comparative study of interaction between chicken egg white lysozyme (Lyz) with two hexavalent chromate ions; chromate and dichromate; which are prevalently known for their toxicity, was investigated using different spectroscopic techniques along with a molecular docking study. Both steady-state and time-resolved studies revealed that the addition of chromate/dichromate is responsible for strong quenching of intrinsic fluorescence in Lyz and the quenching is caused by both static and dynamic quenching mechanisms. Different binding and thermodynamic parameters were also calculated at different temperatures from the intrinsic fluorescence of Lyz. The conformational change in Lyz and thermodynamic parameters obtained during the course of interaction with chromate/dichromate were well-supported by the molecular docking results. 相似文献
8.
Krishnendu Chandra Kaushik Ghosh Arnab K. Ojha Syed S. Islam 《Carbohydrate research》2009,344(16):2188-2194
A polysaccharide (PS-I) isolated from the aqueous extract of the unripe (green) tomatoes (Lycopersicon esculentum) consists of d-galactose, d-methyl galacturonate, d-arabinose, l-arabinose, and l-rhamnose. Structural investigation of the polysaccharide was carried out using total acid hydrolysis, methylation analysis, periodate oxidation study, and NMR studies (1H, 13C, DQF-COSY, TOCSY, NOESY, ROESY, HMQC, and HMBC). On the basis of above-mentioned experiments the structure of the repeating unit of the polysaccharide (PS-I) was established as:
相似文献
Full-size image (8K)
9.
Ananya Chatterjee Somanjana Khatua Sirshendu Chatterjee Shatavisa Mukherjee Atashi Mukherjee Soumitra Paloi Krishnendu Acharya Sandip K. Bandyopadhyay 《Glycoconjugate journal》2013,30(8):759-768
The current study aims to determine the healing activity of water soluble polysaccharide-rich fraction of a wild mushroom, Termitomyces eurhizus (TEps) against the indomethacin induced gastric ulceration in mice model. Gastric tissue histology, myeloperoxidase (MPO) activity, cyclooxygenases (COX) 1 and 2 expression, prostaglandin E2 (PGE2) synthesis, and modulation of pro/anti inflammatory cytokines expression were studied for this purpose. Histological study shows that TEps (20 mg/kg) effectively healed the gastric ulceration. Based on biochemical results, the healing capacities of TEps could be attributed to reduction of MPO activity and protection of mucosal mucin content. Enhanced synthesis of PGE2 by modulation of COX-1 and COX-2 expression and a prominent shift of cytokines expression from pro (TNF-α, IL-1ß) to anti inflammatory (IL-10) side are also held responsible for ulcer healing. The preliminary study highlights the anti-ulcerogenic property of polysaccharide-rich fraction of Termitomyces eurhizus and opens an alternative cure for NSAID induced gastroduodenal diseases. 相似文献
10.
Ram Krishna Thakur Vinod Kumar Yadav Akinchan Kumar Ankita Singh Krishnendu Pal Luke Hoeppner Dhurjhoti Saha Gunjan Purohit Richa Basundra Anirban Kar Rashi Halder Pankaj Kumar Aradhita Baral MJ Mahesh Kumar Alfonso Baldi Bruno Vincenzi Laura Lorenzon Rajkumar Banerjee Praveen Kumar Viji Shridhar Debabrata Mukhopadhyay Shantanu Chowdhury 《Nucleic acids research》2014,42(18):11589-11600