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D. Chowdhury A. Haritha G. Sunitha T. L. Krishnamurthy S. Divya B. Padmavathi G. Ram T. Sarla N. 《水稻科学》2016,23(6):317
Salt stress is a major problem in most of the rice growing areas in the world. A major QTL Saltol associated with salt tolerance at the seedling stage has been mapped on chromosome 1 in rice. This study aimed to characterize the haplotype diversity at Saltol and additional QTLs associated with salt tolerance. Salt tolerance at the seedling stage was assessed in 54 rice genotypes in the scale of 1 to 9 score at EC = 10 d Sm-1 under controlled environmental conditions. Seven new breeding lines including three KMR3/O. rufipogon introgression lines showed similar salt tolerant ability as FL478 and can be good sources of new genes/alleles for salt tolerance. Simple sequence repeat(SSR) marker RM289 showed only two alleles and RM8094 showed seven alleles. Polymorphic information content value varied from 0.55 for RM289 to 0.99 for RM8094 and RM493. Based on 14 SSR markers, the 54 lines were clearly separated into two major clusters. Fourteen haplotypes were identified based on Saltol linked markers with FL478 as the reference. Alleles of RM8094 and RM3412 can discriminate between the salt tolerant and susceptible genotypes clearly and hence can be useful in marker-assisted selection at the seedling stage. Other markers RM10720 on chromosome 1 and RM149 and RM264 on chromosome 8 can also distinguish tolerant and susceptible lines but with lesser stringency. 相似文献
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Sunitha T. Manorama R. Rukmini C. 《Plant foods for human nutrition (Dordrecht, Netherlands)》1997,51(3):219-230
This study was undertaken to assess the effect of blended oils, i.e., polyunsaturated fatty acid (PUFA) rich vegetable oils like safflower oil (SFO) and sunflower oil (SNO) with the unconventional and hypocholesterolemic rice bran oil (RBO) on the serum lipid profile of rats. Rats fed RBO + SNO/SFO at 70:30 ratio for a period of 28 days showed significantly (p < 0.05) lower levels of total cholesterol (TC), triglycerides (TG) and low density lipoprotein (LDL) cholesterol and increased high density lipoprotein (HDL) cholesterol in animals fed a high cholesterol diet (HCD) and cholesterol free diet (CFD). Liver total cholesterol (TC) and triglycerides (TG) were also reduced. Fecal excretion of neutral sterols and bile acids was increased with use of RBO blends. RBO, which is rich in tocopherols and tocotrienols, may improve the oxidative stability of the blends. Tocotrienols are known to inhibit 3-hydroxy, 3-methyl, glutaryl CoA (HMG-COA) reductase (rate limiting enzyme in cholesterol biosynthesis), resulting in hypocholesterolemia. In addition to improving the lipid profile by lowering TC, TG and LDL-C and increasing HDL-C, blending of RBO with other oils can result in an economic advantage of lower prices. 相似文献
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Janabai Giri K. Usha T. Sunitha 《Plant foods for human nutrition (Dordrecht, Netherlands)》1990,40(1):49-59
In the present study the selenium and chromium content of different plant foods such as fruits, greens, flowers, vegetables, dried fruits, spices, condiments, cereals and pulses were analysed. The selenium values for cereals indehiscent vegetables, root vegetables, stem vegetables, pulses, fleshy vegetables, greens, fleshy fruits, condiment seeds, spices and dried fruits ranged between 24.2–32.16, 2.4–18.9, 2.8–21.5, 3.0–32, 48.7–92.5, 1.25–9.5, 3.0–8.2, 2.0–9.4, 6.2–66.2, 6.2–17.5 and 3.5–16.8 g/100 g respectively. The chromium values for the same ranged between 48.2–52.6, 31.0–45, 21.2–25.7, 23.7–62.8, 15.0–43.5, 20.4–65, 14.2–42.1, 14.25–46.7, 58.4–150 and 96–168 g/100 g respectively. Thus dried fruits have the highest chromium content and pulses the highest selenium content. 相似文献
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Lupeol, a pentacyclic triterpene and its ester derivative, lupeol linoleate, were investigated for their possible hepatoprotective effect against cadmium-induced toxicity in rats. Cadmium intoxicated rats showed elevated levels of malondialdehyde (basal and induced), and decreased levels of antioxidants and antioxidising enzymes in the liver. The oral administration of triterpenes (150 mg/kg, once a day for 3 days before injection of cadmium chloride) changed the tissue redox system by scavenging the free radicals and by improving the antioxidant status of the liver. Lupeol linoleate had a better effect on the antioxidant status of the liver, when compared to lupeol. 相似文献
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Conventional and contemporary approaches for drought tolerance rice breeding: Progress and prospects
C Anilkumar Rameswar Prasad Sah Radha Beena Muhammed Azharudheen TP Awadesh Kumar Sasmita Behera NC Sunitha SK Pradhan KR Reshmi Raj Parameswaran C BC Marndi Anil Kumar Singh 《Plant Breeding》2023,142(4):418-438
Drought is becoming a major threat to rice farming across the globe owing to the depletion of water tables in rice-growing belts. Drought affects rice plants at multiple stages, causing damage at morphological and physio-biochemical levels, leading to severe losses that exceed losses from all other stresses. The amalgamation of conventional breeding methods with modern molecular biology tools and biometrical methods could help accelerate the genetic gain for drought tolerance in rice. Many drought-tolerance traits with genetic determinants have been identified and exploited for tolerance rice variety breeding. The integration of genome-wide association study and genomic selection tools with speed breeding shortened the breeding cycle and aided in rapid improvement of genetic gain. In this review, we emphasized the progress made through classical breeding as well as the limitations and usefulness of current genomic methods in improving drought tolerance. We briefly addressed methods for identifying genetic determinants for drought tolerance and deploying them through genomics-assisted breeding programmes to develop high-yielding drought-tolerant rice cultivars. 相似文献
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Ayele Gizachew MSc Rolf K. Schuster Sunitha Joseph Renate WerneryNissy Annie Georgy MSc Shyna K. Elizabeth Yilkal Asfaw Fikru Regassa Ulrich Wernery 《Journal of Equine Veterinary Science》2013
Working donkeys (n = 395) originating from three different districts of the Oromia region of Ethiopia were examined October 2009 and April 2010 for the prevalence of equine piroplasmosis between. Apart from hematological and serological examination, tick vectors were collected and determined. Intraerythrocytic stages of Theileria equi and Babesia caballi were detected in 12.2% and 1.8% of examined stained blood smears, respectively. The seroprevalence of T. equi and B. caballi was 55.7% and 13.2%, respectively. The majority of active infection coincided with anemia. Only 16 donkeys were infested with four species of hard ticks: Rhipicephalus turanicus, Rhipicephalus evertsi evertsi, Rhipicephalus pulchellus, and Amblyomma variegatum. 相似文献
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