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Lamba Kavita,Kumar Mukesh,Singh Vikram,Chaudhary Lakshmi,Jain Neelu,Saini Anil Kumar,Gupta Vijeta,Singh Akhlash Pratap 한국작물학회 2024 Journal of crop science and biotechnology Vol.27 No.4
Yellow rust, caused by Puccinia striiformis Westend. f. sp. tritici Erikss. (Pst), is one of the most damaging wheat diseases because of their widespread distribution and ability to produce new races that can attack cultivars that were previously resistant. In this study characterization of 48 wheat genotypes was done using 51 primers comprised of stripe rust gene-specific markers and found that WH730 and WH1142 possess the highest number of rust resistant genes while WH1263 bears the lowest Yr genes. These identified resistant Yr genes were exhibited at different frequencies. The resistant genes like, Yr6, Yr18, Yr46, Yr53 and Yr61 were absent in all the 48 studied wheat genotypes. Yr35 and Yr51 had the highest frequency (95.3 and 91.6%, respectively), while Yr16 related to xwmc177 and xwmc18 had lower frequencies (8.0 and 10.4%, respectively). Genetic diversity analysis using 61 molecular markers, and population structure analysis grouped the population into three clusters. Association study of morph-physiological traits showed that the marker xgdm160 was strongly associated with two traits i.e. days to anthesis and days to heading at P value 0.0031 and 0.0048 (P < 0.01), respectively, and showed the highest phenotypic variance (R2). These assessed markers might help develop novel genotypes with numerous genes of resistance against yellow rust races in wheat genotypes by marker-assisted pyramiding.
( Neelam V. Ramana Reddy ),( Mukesh Kumar Saini ),( Pera Jayavardhan Reddy ),( Ajay Singh Thakur ),( Challa Dinesh Reddy ) 대한슬관절학회 2022 대한슬관절학회지 Vol.34 No.-
Objective: Knee arthritis associated with tibial stress fractures represents an uncommon and difficult clinical scenario to treat. The use of long, fluted tibial extension rods has been vital in the management of such cases owing to immediate fracture stability and single-stage surgery without the need to open the fracture site. This study investigates clinical and radiological outcomes following total knee arthroplasty using a tibial extension stem in cases of knee osteoarthritis with tibial stress fracture. Methods: From February 2015 to December 2020, 17 patients who had total knee arthroplasty implanted with a long stemmed tibial component were included in the study. Patient data were analyzed for knee range of motion, deformities, Knee Society score, knee function score, and time to fracture union in the pre- and postoperative periods. Results: The mean follow-up duration was 22.7 ± 11.68 months (range 12-60 months), and mean time to fracture healing was 10.23 ± 2.81 weeks (range 8-20 weeks). The preoperative mean fixed flexion deformity improved from 8.53 ± 3.43° to a mean of 0.29°, and knee flexion improved from 79.4 ± 13.90° to 125.29 ± 8.74° on postoperative assessment. The Knee Society score improved from a mean preoperative score of 18.94 ± 5.55 (range 8-28) to 89.41 ± 7.5 (range 74-102, p value < 0.001). Similarly, the knee function score improved significantly from a mean preoperative score of 15.5 ± 4.48 (range 8-26) to a mean of 85 ± 6.09 (range 72-94, p value < 0.001). Conclusion: Total knee arthroplasty using long tibial extenders has been an effective and safe surgical option for patients with advanced osteoarthritis with tibial stress fractures.