Physiological Mechanism and Nutrient Management Strategies for Flood Tolerance in Rice Grown in Lowland Flood Prone Ecosystem     

Dwivedi  Sharad Kumar  Kumar  Santosh  Bhakta  Narayan  Srivastava  Ashish Kumar  Mishra  Janki Sharan  Kumar  Virendar  Kumara  B. H.  Bhatt  Bhagwati Prasad  Singh  Sudhanshu 《Journal of Crop Science and Biotechnology》2018,21(4):321-331

Journal of Crop Science and Biotechnology - In flood-prone areas, rice must have flood tolerance characteristics either through genotypic selections or by nutrient application management...  相似文献   

Predictive models for dry biomass and carbon stock estimation in Litchi chinensis under hot and dry sub-humid climate     

Sushanta Kumar Naik  Pradip Kumar Sarkar  Bikash Das  Arun Kumar Singh  Bhagwati Prasad Bhatt 《Archives of Agronomy and Soil Science》2018,64(10):1366-1378

Accurate and reliable predictive models are necessary to estimate above and below ground biomass of plant and biomass carbon stock non-destructively. Different growth models namely viz, Linear, Allometric, Logistic, Gompertz, Richard’s, Negative exponential, Monomolecular, Mitcherlich and Weibull were fitted to the relationship between dry biomass of litchi tree components with collar diameter. Richard’s model outperformed the others and fulfilled the validation criterions to the best possible extent with lowest Akaike information criteria (AICc) of 90.47 and root mean square error (RMSE) of 1.79. The value of adjusted R² ranged from 0.947 to 0.971 for the Richard’s models fitted on various biomass components and the ‘t’ values for all the components was found non-significant (p > 0.05) indicating the validation of the model. The estimated total dry biomass varied from 0.50 Mg ha^?1 in two year to 5.71 Mg ha^?1 in 10 year old litchi orchards. The estimated stored biomass carbon stock in litchi orchards (branches, bole and roots) varied from 0.10 Mg ha^?1 in two year to 1.85 Mg ha^?1 in 10 year orchards with CO₂ sequestration potential from 0.19–4.63 Mg ha^?1.  相似文献   

Light Interception, Leaf Area Index and Dry Matter Yield in Fodder Sorghum at Different Plant Populations     

R. K. Bhatt 《Journal of Agronomy and Crop Science》1995,174(4):287-290

Fodder sorghum (M. P. Chari) was grown at varying populations to examine its influence on light interception, leaf area index and biomass production. DMY, CGR and IPAR depending on LAI reached maximum at LAI 5 of 150 000 plants ha⁻¹ stand and thus yielded higher biomass. Therefore, physiological potential of fodder sorghum crop was found to be maximum at a population density of 150 000 plants ha⁻¹. Further increases in population developed mutual shading and adversely affected the crop growth rate and dry matter accumulation. Significant linear relationships of dry matter yield with IPAR, plant population densities, LAI and CGR clearly indicate the interdependence of these characters.  相似文献   

m‐carboxycinnamic acid bishydroxamide improves developmental competence,reduces apoptosis and alters epigenetic status and gene expression pattern in cloned buffalo (Bubalus bubalis) embryos          下载免费PDF全文

H Agrawal  NL Selokar  M Saini  MK Singh  MS Chauhan  P Palta  SK Singla  RS Manik 《Reproduction in domestic animals》2018,53(4):986-996

Incomplete or aberrant reprogramming of nuclear genome is one of the major problems in somatic cell nuclear transfer. In this study, we studied the effect of histone deacetylase inhibitor m‐carboxycinnamic acid bishydroxamide (CBHA) on in vitro development of buffalo embryos produced by Hand‐made cloning. Cloned embryos were treated with CBHA (0, 5, 10, 20 or 50 μM) for 10 hr from the start of reconstruction till activation. At 10 μM, but not at other concentrations examined, CBHA increased (p < .05) the blastocyst rate (63.77 ± 3.97% vs 48.63 ± 3.55%) and reduced (p < .05) the apoptotic index of the cloned blastocysts (8.91 ± 1.94 vs 4.36 ± 1.08) compared to untreated controls, to levels similar to those in IVF blastocysts (4.78 ± 0.74). CBHA treatment, at all the concentrations examined, increased (p < .05) the global level of H3K9ac in cloned blastocysts than in untreated controls to that observed in IVF blastocysts. Treatment with CBHA (10 μM) decreased (p < .05) the global level of H3K27me3 in cloned blastocysts than in untreated controls but it was still higher (p < .05) than in IVF blastocysts. CBHA (10 μM) treatment increased (p < .05) the relative expression level of pluripotency‐related genes OCT‐4 and NANOG, and anti‐apoptotic gene BCL‐XL, and decreased (p < .05) that of pro‐apoptotic gene BAX than in untreated controls but did not affect the relative expression level of apoptosis‐related genes p53 and CASPASE3 and epigenetics‐related genes DNMT1, DNMT3a and HDAC1. These results suggest that treatment of cloned embryos with 10 μM CBHA improves the blastocyst rate, reduces the level of apoptosis and alters the epigenetic status and gene expression pattern.  相似文献   

Assessment of hydrogeochemical characteristics of groundwater in shrimp farming areas in coastal Tamil Nadu, India     

P. Nila Rekha  P. Ravichandran  R. Gangadharan  J. H. Bhatt  A. Panigrahi  S. M. Pillai  M. Jayanthi 《Aquaculture International》2013,21(5):1137-1153

Brackishwater aquaculture is basically farming in coastal region, and it utilizes the saline water from either sea or estuary or creek. Assessment of hydrogeochemisty of groundwater resources in shrimp farming areas is very much required not only for monitoring the shrimp farming impacts, but also to suggest better management strategies for the long-term sustainability of shrimp farming and integrated water resources management in coastal regions. Watershed-based assessment is ideal as watershed is a geohydrological unit, and it will give the realistic and cumulative effects more precisely. With this background, the present investigation was carried out to evaluate the geochemical process regulating groundwater quality in shrimp farming areas of coastal miniwatersheds of Vellar and Coleroon river, Cuddalore district, Tamil Nadu, along the east coast of India. Representative groundwater (29) samples from shallow aquifer (hand pump and open well) were collected periodically (June 2008, January 2009, April 2009 and July 2009) using the simple random sampling method and analyzed for various water quality parameters viz. pH, TDS, total hardness, alkalinity, cations (Ca⁺, Mg⁺, Na⁺) and anions (Cl^?, SO₄ ^?, NO₃ ^?, HCO₃ ^?). The groundwater data indicated that the HCO₃ was the dominant ion in the study area with sodium (Na > Ca > Mg) and bicarbonate (HCO₃ > Cl > SO₄) as the predominant cation and anion, respectively. The large variations in mean and standard deviation of ionic concentration suggest that the water chemistry in the study region was not homogenous and may be influenced by complex sources for the hydrogeochemical processes. The piper trilinear diagram depicts the status of the groundwater quality and also suggests that the cation exchange and mineral dissolution was responsible for this elevated ionic composition at some locations in the study area. The multivariate statistical analysis viz., principal component analysis and cluster analysis clearly elucidated that the groundwater quality in the area is mainly due to natural process and the shrimp farming is not an influencing factor.  相似文献   

Effect of conservation tillage and rice-based cropping systems on soil aggregation characteristics and carbon dynamics in Eastern Indo-Gangetic Plain     

Mondal  Surajit  Naik  Sushanta Kumar  Haris  A. A.  Mishra  J. S.  Mukherjee  Joydeep  Rao  K. K.  Bhatt  B. P. 《Paddy and Water Environment》2020,18(3):573-586

Paddy and Water Environment - Traditional rice–wheat cropping system, which follows wet puddling in rice and conventional tillage in wheat, is deteriorating soil health resulting yield...  相似文献   

Genetic divergence for growth and wood parameters in different clones of Dalbergia sissoo Roxb     

Kumar A  Bhatt A  Ravichandran S  Pande PK  Dobhal S 《林业研究》2012,23(2):285-288

The wood analysis for different parameters was carried out in a clonal seed orchard of Dalbergia sissoo Roxb. established during 1997 at Hoshiarpur, Punjab, India. Twelve clones with higher index value were subjected to Euclidean Cluster Analysis based on wood and growth parameters to group into seven clusters. Cluster I and II contained four and three clones, respectively, and remaining clusters had just one clone each. Clone originated from Barielly, Uttar Pradesh of cluster VII was found to be the most divergent clone. Cluster II with three clones maintained greater inter-cluster distance with other clusters. The divergence analysis has confirmed that the clones planted in the clonal seed orchard are sufficiently divergent and seed harvested from the orchard would maintain high diversity.  相似文献   

Morphological variability in holy basil (<Emphasis Type="Italic">Ocimum tenuiflorum</Emphasis> L.) from India     

Pavan Malav  Anjula Pandey  K. C. Bhatt  S. Gopala Krishnan  I. S. Bisht 《Genetic Resources and Crop Evolution》2015,62(8):1245-1256

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In Vitro Cytochrome P450 2E1 and 2A Activities in the Presence of Testicular Steroids     

MK Rasmussen  G Zamaratskaia  B Ekstrand 《Reproduction in domestic animals》2011,46(1):149-154

Cytochrome P450 2E1 (CYP2E1) and 2A (CYP2A) are the main enzymes involved in the metabolism of skatole in pigs. In this study, physiological concentrations of androstenone, 17β‐oestradiol and testosterone were tested for their ability to regulate CYP2E1 and CYP2A activity in liver microsomes isolated from entire male and female pigs as well as in microsomes from Saccharomyces cerevisiae expressing either human recombinant CYP2E1 or CYP2A6. We found that physiological concentrations of androstenone and oestradiol had the ability to inhibit CYP2E1 activity. The magnitude of this inhibition (approximately 30%) was similar in recombinant human CYP2E1 and microsomes from entire male pigs. This inhibition was only seen when adding the steroid to the assay 15 min before the substrate. Interestingly, CYP2E1 activity in the microsomes from female pigs was not affected. None of the investigated steroids modified the activity of recombinant human CYP2A6. However, CYP2A activity was slightly increased in the microsomes from female pigs in the presence of oestradiol, but the magnitude of this increase was very low (below 10%) and probably irrelevant. Overall, these results indicate that physiological concentrations of androstenone and oestradiol have a potential to inhibit CYP2E1 activities in vitro, and that this inhibition is gender‐specific. Further studies are needed to investigate the biochemical mechanisms underlying those differences between the genders.  相似文献   

Can yield,soil C and aggregation be improved under long-term conservation agriculture in the eastern Indo-Gangetic plain of India?     

Surajit Mondal  Janki Sharan Mishra  Shish Pal Poonia  Rakesh Kumar  Rachana Dubey  Santosh Kumar  Mausam Verma  Karnena K. Rao  Akram Ahmed  Sharad Dwivedi  Bhagwati Prasad Bhatt  Ram Kanwar Malik  Virender Kumar  Andrew McDonald 《European Journal of Soil Science》2021,72(4):1742-1761

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