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1.
陆地棉机采性状对皮棉产量的遗传贡献分析 总被引:5,自引:0,他引:5
采用加性-显性-加加上位性及其与环境互作的遗传模型(ADAA模型),对8个陆地棉亲本(其中有6个机采棉品种)及其F1和F2的28个组合5个机采性状和单株皮棉产量的新疆阿拉尔和石河子2试点资料,进行了贡献分析。结果表明,5个机采性状对皮棉产量表型值的贡献变化范围为-20%~-14%;在显性贡献中,第一果枝高度对皮棉产量的贡献率最大(CRD=10%),其次是节间长度的贡献(CRD=8%),而霜前花率对皮棉产量有较大的抑制作用(CRD=-25%);霜前花率对皮棉产量的加加上位贡献率最大(CRAA=86%),其次是第一果枝节位(CRAA=24%)。霜前花率在特殊的环境中对皮棉产量表现为很大的显性正向贡献(CRDE=78%)和加加上位效应抑制作用。不同亲本5个机采性状对其皮棉产量的显性和加加上位效应贡献不同。5个机采性状对不同组合皮棉产量显性效应的贡献较小,霜前花率对皮棉产量的显性效应的贡献在2个地点的表现往往和单株皮棉产量在不同地点表现显性效应的性质(正或负)相一致,并且在5个机采性状中对皮棉产量的显性贡献是最大的。加加上位效应在皮棉产量的遗传中起着很重要的作用,而在8个亲本及其后代各组合的5个机采性状中,霜前花率可作为选择皮棉产量加加上位效应的主选性状。在不同的环境中,皮棉产量加加上位效应的主选机采性状随组合有所不同。 相似文献
2.
Elsheikh HA Taha AA Khalafalla AE Osman IA Wasfi IA 《Veterinary research communications》1999,23(8):507-514
The pharmacokinetics of amoxicillin were studied in five Desert sheep and five Nubian goats after intravenous (i.v.) or intramuscular (i.m.) administration of a single dose of 10 mg/kg body weight. Following i.v. injection, the plasma concentration-versus-time data were best described by a two-compartment open model. The kinetic variables were similar in both species except for the volume of the central compartment (Vc), which was larger in sheep (p<0.05). Following i.m. injection, except for the longer half-life time of absorption in goats (p<0.05), there were no significant differences in other pharmacokinetic parameters between sheep and goats. The route of amoxicillin administration had no significant effect on the terminal elimination half-life in either species. The bioavailability of the drug (F) after i.m. administration was high (>0.90) in both species. These results indicate that the pharmacokinetics of amoxicillin did not differ between sheep and goats; furthermore, because of the high availability and short half-life of absorption, the i.m. route gives similar results to the i.v. route. Therefore, identical intramuscular and intravenous dose regimens should be applicable to both species. 相似文献
3.
Mona Saleh Ehab Essawy Mohamed Shaalan Shaaban Osman Fatma Ahmed Mansour El-Matbouli 《Marine drugs》2022,20(7)
Marine bio-sourced chitosan nanoparticles (CSNP) are antimicrobial and immunomodulatory agents beneficial for fish medicine. Herein, dietary CSNP was investigated for the amelioration of the systemic inflammatory responses of an induced fish model. One hundred and forty-four rainbow trout were assigned to one pathogen-free and non-supplemented group (negative control), and three challenged groups: non-supplemented (positive control), CSNP-preventive, and CSNP-therapeutic. After a feeding experiment extended for 21 days, the organosomatic indices (OSI) and molecular aspects were assessed. After a challenge experiment extended for further 28 days, CSNP-therapeutic intervention was assessed on fish survival and systemic inflammatory responses on pathology, histo-morphology, and molecular aspects. With CSNP administration, OSI nonsignificantly decreased and the relative expression of targeted inflammatory-mediator genes was significantly increased. The CSNP-therapeutic fish showed an RPS of 80% as compared to the positive control group, and CSNP-therapeutic administration retained the highest gene expression augmentation up to 28 days after the challenge. Notably, the splenic reticulin fibers framework of the CSNP-therapeutic group retained the highest integrity among the groups during the infection. After recovery, reticulin fibers density in the CSNP-therapeutic samples was significantly higher than in the negative control group, which indicates high innate immunity. Thus, CSNP showed promising biotherapeutic features enhancing fish resistance against infections. 相似文献
4.
5.
A pot experiment was conducted to evaluate the efficiency of farm yard manure (FYM) and lime (calcium carbonate) on reducing the uptake of Cd by rice in two Cd contaminated soils of Chittagong. The effects of farm yard manure, lime and farm yard manure mixed with lime (FYM + Lime) on rice (Oryza sativa L.) growth, Cd uptake by rice and 0.1 N HC1 extractable Cd in soil were investigated. Results showed that addition of lime and farm yard manure mixed with lime significantly decreased 0.1 N HCl extractable Cd in the city sewage soil. Application of farm yard manure significantly decreased Cd concentration in rice in the city sewage soil. Lime and farm yard manure mixed with lime significantly reduced Cd concentration in rice m both the contaminated soils. Lime was more efficient than farm yard manure in reducing the uptake of Cd by rice. 相似文献
6.
Effects of aminoglycoside antibiotics on renal antioxidants, malondialdehyde levels, and some serum biochemical parameters 下载免费PDF全文
Enver Yazar Muammer Elmas Vahdettin Altunok Abdullah Sivrikaya Esma Oztekin Yavuz Osman Birdane 《Canadian journal of veterinary research》2003,67(3):239-240
Effects of amikacin, gentamicin, kanamycin, and streptomycin on renal tissue superoxide dismutase, glutathione peroxidase, glutathione and malondialdehyde, serum creatinine, potassium, sodium, total protein, glucose, uric acid, and total bilirubin levels were investigated. All aminoglycoside antibiotics decreased renal tissue glutathione levels. 相似文献
7.
In this study we aimed to reveal the ranges and effectiveness of soil parameters on the distribution of H. strobilaceum. Halocnemum strobilaceum Bieb. is a widespread species in saline habitats and the distribution pattern of this halophytic species around Lake Tuz in Central Anatolia was examined according to the soil characteristics. pH, electrical conductivity, soil humidity, salt percentage, soluble Ca2+, Mg2+, Na+, K+, CO3(2-), HCO3(-), Cl(-) and SO4(2-) values, total cations, cation exchange capacity, sodium adsorption ratio, exchangeable Na+, K+, Ca2+ and Mg2+ values were the examined soil properties. The most effective soil parameters for flowering period were found as Na, SO4, total cations, SAR and EC and for seed bearing period as EC, Mg, total cations, Cl, Na, SO4 and salt (%) content of the soil. 相似文献
8.
This study was carried out to determine the effect of water stress on five different generative stages of soybeans and to evaluate the CROPGRO-soybean model under semi-arid climatic conditions. The study was conducted at the Faculty of Agricultural Engineering, Harran University research field in 2003 and 2004 growing seasons. Plants received full irrigation during vegetative stages, after which it was cut off at different reproductive stages (treatments): R1-2, beginning of flowering and full bloom; R3, beginning of pod; R4, full pod; R5, beginning of seed; and R6, full seed. The control treatment was full irrigation throughout. Observed yields ranged from 1955 (R6) to 3684 kg ha−1 (control) in 2003, and from 1867 (R6) to 3952 kg ha−1 (control) in 2004, respectively. Generally, in both of the years any water stress imposed on soybeans in three different generative stages (R3, R5, and R6) resulted in substantial yield reduction compared with full irrigation; yield reduction was greatest at the R6 stage. Biomass and 1000 seed weight also showed significant difference. Overall, CROPGRO-soybean simulated parameters from all treatments were higher compared with observed ones. Although simulated yield results were close to measured ones, they could not track observed yield patterns. Generally, the CROPGRO-soybean simulation model failed to satisfactorily mimic observed soybean yield, biomass, and 1000 seed weight and therefore it is suggested not to be used for similar scenarios and climatic conditions. 相似文献
9.
Journal of Pest Science - In einem Labortest wurde die Wirksamkeit des NematodenDiplogaster sp. als Prädator der Zweitlarven der WurzelnematodenMeloidogyne javanica undTylenchulus... 相似文献
10.
Favouring Tetranychid mites by intercropping peanut plants on citrus plants and results of chemical control measures
The mite populations ofT. cucurbitacearum (Sayed) andT. arabicus (Attiah) reached noxious levels on the peanut plants intercropped on orange trees, during July and August, when the increasing in temperature was accompanied with increasing in humidity. It seems that intercropping the peanut plants on fruit trees and cultural practices may affect as well peanut plant condition as the mortality of mites and consequently increase mite infestation.Regarding, the control experiments, it had been found that 5 acaricides used were very effective in decreasing Tetranychid populations on peanut plants. 相似文献