توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقالههای نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده میشوند.
اطلاعات انتشار: International Journal of Plant Production، ششم،شماره۴(پياپي ۲۲)، Oct ۲۰۱۲، سال ۰
تعداد صفحات: ۲۲
The objective of this study was to determine the effect of Verticillium dahliae Kleb. on cotton yield and fiber technological properties, relationships among to disease and seed cotton yield, fiber yield and fiber technological properties and also determine susceptible and tolerant cotton varieties. The study was conducted in the Southeastern Anatolia Agricultural Research Institute’s experimental area during 2004–2006. The experiment was arranged as a randomized split block design with four replications. Main plot consisted of infected and non–infected area, sub–plot consisted of varieties. In this study 10 different commercial cotton varieties were grown to test the v erticillium wilt performance. The results indicated that there were significant differences among varieties for all of the investigated characteristics. Area differences were significant for all of the investigated traits except ginning percentage. The results of the non–infected area showed that there were decreasing with regard to foliar disease index (FDI), vascular disease index (VDI), vascular disease rate (VDR), first picking percentage, fiber fineness, micronaire and yellowness; while increasing with regard to seed cotton yield, fiber yield, fiber length, strength, elongation, uniformity, reflectance and spinning consistecy index. Only ginning percentage was unaffected from area differences. With planting cotton varieties in non–infected area there were 323.60 kg ha –1 increase for seed cotton yield and 114.50 kg ha –1 for lint yield. Disease led to a decrease (7.86%) in seed cotton yield and (6.73%) in fiber yield. The results of this study indicated that GW–Teks, GW–Golda and Carmen varieties were tolerant; while Maraş 92, Sayar 314 and Stoneville 453 were sensitive in terms of FDI, VDI and VDR and tolerant varieties can be used as parents in Verticillium breeding programs.
۲Population structure, growth and reproduction of leaping grey mullet (Liza saliens Risso, 1810) in Beymelek Lagoon, Turkey
نویسنده(ها): &İ، ، smet BALIK، Y&ı، ، lmaz EMRE، &Ç، ، ، ، etin S&Ü، ، MER، Ferit Y. TAMER، D. Aytu&ğ، ، OSKAY and &İ، ، sa TEK&Ş، ، AM
اطلاعات انتشار: IRANIAN JOURNAL OF FISHERIES SCIENCES، دهم،شماره۲، Apr ۲۰۱۱، سال ۰
تعداد صفحات: ۱۲
Population structure, growth, length–weight relationship and reproduction characteristics of leaping grey mullet (Liza saliens (Risso, 1810) were investigated in Beymelek Lagoon from February 2006 to January 2007. During the study, a total of 1248 leaping grey mullet were captured by gill– and trammel nets of various mesh sizes. Male to female ratio for leaping grey mullet population in Beymelek Lagoon was 1:2.71. The ages ranged from 1 to 4 years for males and from 0 to 5 years for females. The growth parameters of the von Bertalanffy equation were: L∞ = 35.2 cm, K = 0.276 year–1 and t0 = –2.893 year for males, L∞ = 35.9 cm, K = 0.386 year–1 and t0 = –1.760 year for females and L∞ = 39.9 cm, K = 0.271 year–1 and t0 = –2.233 year for all individuals. The calculated length–weight equations were W = 0.0061*L3.124 for males, W = 0.0060*L3.124 for females and W = 0.0099* L2.954 for all individuals. The slope (b) values of the length–weight relationship showed that weight of leaping grey mullet in Beymelek Lagoon increased with length in isometric. The mean condition factor for males, females and all specimens were determined as 0.908, 0.900 and 0.897, respectively. According to sex groups, the mean condition factor of males was slightly higher than that of females. The total length at 50% maturity for female leaping grey mullet was determined as 23.3 cm. It was assumed that spawning period for this species was from May to July.
نویسنده(ها): N.S. Bascinar *، A. M. Gozler، C. &Ş، ، ahin، &Ç، ، . Eruz، L. Tolun، E. Agirbas، M. Mantikci، S. Serdar، B. Verep
اطلاعات انتشار: IRANIAN JOURNAL OF FISHERIES SCIENCES، سيزدهم،شماره۳، Jul ۲۰۱۴، سال ۰
تعداد صفحات: ۲۰
The present study was conducted to examine the impact of cage aquaculture on benthic communities in coastal areas (depth 25 to 50 m) from fish farming operations located along the southeastern Black Sea (Ordu–Perşembe, Trabzon–Yomra and Rize central). Sampling was conducted seasonally from April 2007 to 2009. Sediment samples were taken using Ekman Grab (box core– 0.04 m2). Temperature, salinity, and water velocity were periodically measured to determine influencing sedimentary organic matter in the sediment, oxygenation, and anoxic conditions. In addition, grain size of sediment, organic carbon content, and distribution of benthic communities were investigated. In order to determine benthic impact of fish farms on the region, Shannon – Wiener diversity index (H’), AMBI (AZTI Marine Biotic Index) and M–AMBI (Multivariate– Marine Biotic Index) indices were used. Results of current study showed that benthic zone ecological quality of stations with number 01, 02, 03, and 04 at Ordu–Perşembefish–farming habitat was found to be very low. In autumn 2008, there were 3 species which belonged to Capitella capitata (844 individuals\m2), Capitella sp. (133 individuals\m2), and Heteromastus filliformis (311 individuals\m2) at OP–01 station. In addition, the impact of Trabzon–Yomra fish–farming activity on benthic communities was low. The degree of exposure for Rize fish–farming area in all seasons was quite low, which was not a significant negative impact.
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