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Sharad Kumar Dwivedi,Santosh Kumar,Narayan Bhakta,Ashish Kumar Srivastava,Janki Sharan Mishra,Virendar Kumar,B H Kumara,Bhagwati Prasad Bhatt,Sudhanshu Singh 한국작물학회 2018 Journal of crop science and biotechnology Vol.21 No.4
In flood-prone areas, rice must have flood tolerance characteristics either through genotypic selections or by nutrient application management strategies. The current study was conducted at ICAR Research Complex for Eastern Region, Patna during the wet season to investigate the effect of post-flood nutrient application methods on submerged rice survival and productivity. Our study showed that the 3-d submergence duration had no effect on the survival (100%) of 21-day-old seedlings but survival percentage decreased to 97 and 65% at 7-d and 11-d submergence, respectively. Total chlorophyll, total soluble sugar, and starch concentrations also exhibited a similar pattern of decline. The activity of anti-oxidative defense enzymes (CAT, POX, SOD, and APX), recorded just after de-submergence was found to be 1.5-10-foldhigher than before submergence, increasing with the increase in the severity of stress. Additional post-flood application of K2O and N at 5-6 days after de-submergence led to the improvement in photosynthetic rate, yield attributes, and grain yield. An additional 10 kg each of N and K2O produced maximum 1000-grain weight and higher grain yield and harvest index. After submergence, the meta-analysis exhibited a significant reduction in total chlorophyll concentration due to increasing submergence duration, whereas the significantly higher activity of antioxidants was recorded irrespective of submergence duration. In association with the better anti-oxidative defense mechanism of Sub1 varieties, the additional doses of N and K2O at 5-d after de-submergence significantly enhanced the survival, post-flood recovery, and the rate of photosynthesis after de-submergence. These nutrient management options can provide an opportunity to explore the productivity potential of the SUB1-introgressed variety under natural flash-flood conditions, helping to cope with the existing problems in flood-prone areas. The findings of the study suggest that a proper time and method of N application with basal P can significantly contribute to higher rice yield in flash-flood prone areas.
Rajiv Bharat Kharwar,Sharad Chandra,Sudhanshu Kumar Dwivedi,Ram Kirti Saran 한국심초음파학회 2014 Journal of Cardiovascular Imaging (J Cardiovasc Im Vol.22 No.3
Peripartum cardiomyopathy is a cardiac condition characterized by development of heart failure during the last month of pregnancyor during the first five months of post partum period without any other identifiable cause of heart failure. The hypercoagulablestate in the pregnancy along with left ventricular (LV) systolic dysfunction predisposes the patient to thromboembolic complicationslike intraventricular thrombi. We report a case of a 30-year-old female with peripartum cardiomyopathy along with ahighly mobile mass in the LV cavity on two dimensional echocardiography. Three dimensional transthoracic echocardiographyclearly showed the pedicle of the mass attached to the interventricular septum along with internal echolucent areas within themass. Due to denial of the patient to undergo surgery, she was started on oral anticoagulation, with complete dissolution of themass within one month.