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151.
种业是引领现代农业跨越发展的基础性、战略性新兴产业,强化种业科技自主创新,推动现代种业健康发展是我国发展的必由之路。分析当前我国种业发展概况,从种质、技术和品种3个方面概述了我国种业科技主要进展;分析我国种业科技面临的问题,从人才、创新能力、创新体系和政策等4个方面提出发展思路和对策,以期推动我国种业快速健康发展。 相似文献
152.
İkbal Eski Bünyamin Demir Feyza Gürbüz Zeynel Abidin Kuş Kadir Uğurtan Yilmaz Mehmet Uzun Sezai Ercişli 《Erwerbs-Obstbau》2018,60(2):153-160
In this study, an adaptive neuro fuzzy interface system (ANFIS) based predictor was designed to predict the physical properties of four almond types. Measurements of the dimensions, length, width and thickness were carried out for one hundred randomly selected samples of each type. With using these three major perpendicular dimensions, some physical parameters such as projected area, arithmetic mean diameter, geometric mean diameter, sphericity, surface area, volume, shape index and aspect ratio were estimated. In in a various Artificial Neural Network (ANN) structures, ANFIS structure which has given the best results was selected. The parameters analytically estimated and those predicted were given in the form of figures. The root mean-squared error (RMSE) was found to be 0.0001 which is quite low. ANFIS approach has given a superior outcome in the prediction of the Physical Properties of Almond Nuts. 相似文献
153.
1. The present study was conducted to determine the effect of various dietary protein concentrations on the carcase composition of male Japanese quail.
2. Six diets varying in protein from 160 to 300 g/kg and containing approximately 11–72 MJ/kg ME were fed for 5 weeks and analysed for dry matter, protein, fat and ash.
3. Treatments affected carcase weight, dry matter, protein, ether extract and ash
4. The water content of the carcases decreased with increasing dietary protein concentrations, while the carcase protein content increased with higher dietary protein. The carcases with the highest fat content were obtained from quail receiving the low protein diet. 相似文献
154.
Ramazan Sevgi Hüseyin Erdem Tahir Karaahin Mehmet Ali Ylmaz Muharrem Satlm Alaeddin Okurolu lker Ünal ükrü Dursun Hasan Alkan Fatma Satlm Mehmet Güler 《Reproduction in domestic animals》2019,54(10):1322-1329
The most significant focal points of the embryo transfer technology are as follows: the selection of donors, the response of the selected donor to the superovulation protocol and the obtained number of the transferable embryos. For this purpose, it is suggested that donor selection can be done by anti‐Müllerian hormone (AMH) levels, and embryo production is evaluated. AMH is secreted by the granulosa cells of primordial, pre‐antral and antral follicles below 4 mm in the ovary, independent of FSH. Therefore, the aim of this study was to investigate the relationship between serum AMH levels and the number of corpus luteum (CL), total embryos and transferable embryos that were shaped after a uniform superovulation protocol. For this reason, 48 Simmental cows, which were located at General Directory of Agricultural Enterprises (region, province, etc. instead of the general directorate), were used as donors for the embryo transfer. Blood samples were taken at random, regardless of the stage of animal's sexual cycle. AMH levels were measured by enzyme‐linked fluorescent assay (ELFA) method of the miniVIDAS® (bioMérieux SA) using AMH Bovine Test Kit. According to the statistical analyses of the obtained data, AMH levels were positively correlated with CL and total embryos (p < .05). No significant correlations between AMH and transferable embryos were approved (p > .05). It was also determined that each 200 pg/ml increase in serum AMH level resulted in one increase in CL number. Overall, considering the positive correlation between AMH level and the obtained number of CL and total embryos after a superovulation treatment, it was concluded that measuring blood AMH level prior to any further costly implementation may be an effective method in donor selection. 相似文献
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Orhan Tokmakoğlu 《Journal of pest science》1965,38(2):23-25
Zusammenfassung 1. Es gelang die vollständige kontinuierliche Zucht vonS. luniger unter hier näher beschriebenen Bedingungen.2. Die Kopulation erfolgte nur im Fluge, frühestens 4 Tage nach dem Schlüpfen, bei relativer Luftfeuchtigkeit von 65–70%.3. Die Larvenentwicklung dauerte bei 22°C 8 bis 10 Tage. Die Mortalität erreichte 40–45%. Zur Verpuppung bevorzugten die Larven lockere, feuchte Medien.4. Die Puppen entwickelten sich am schnellsten bei 22–25°C, einem Temperaturbereich, in dem auch die geringste Mortalität auftrat. Es bestehen Anhaltspunkte dafür, daß die Mortalität bei langsamer Entwicklung höher ist als bei schneller.Herrn Professor Dr. F. Schwerdtfeger zum 60. Geburtstag gewidmet. 相似文献
158.
Leaf beetle occurrence and abundance on certain shrubs and bushes were surveyed during 2002–2003 in several natural habitats of Isparta. The 34 leaf-beetle species collected are listed and classified according to their relative percentage of the total caught and to their associated host plants. In all habitats sampled, leaf beetles showed a preference for plants from the genera Quercus and Crataegus. Some abundant species causing serious damage to their food plants are discussed. 相似文献
159.
160.
The electric-arc technique used to generate single-walled carbon nanotubes (SWCNTs) is introduced. Especially, the superconductivity of SWCNTS is concerned. The samples of single-walled carbon nanotubes are suspended between two superconducting electrodes and their super-currents may be observed under special conditions. It is called 'proximity-induced method'. With the method, some experiments show that SWCNTs have higher critic super-currents, and the temperature and magnetic field dependence of the critic currents exhibits unusual features. 相似文献