The purpose of this study was to determine the optimal time to harvest and length of the harvesting period in two early-maturing Okitsu and Clausellina mandarins and two early-maturing Navelina and Newhall oranges under Güzelyurt-Turkish Republic of Northern Cyprus (TRNC) ecological conditions. Fruit weight, fruit length, rind thickness, fruit juice, brix, acid and brix/acid ratio were determined. Fruit were harvested at three different times. Okitsu and Clausellina mandarins were harvested in September, October and November; Navelina and Newhall oranges were harvested in October, November and December. Harvest date x variety interaction effect was significantly important on fruit weight, fruit height and maturity index in mandarins whereas interaction effect of harvest date and variety was significantly important on fruit weight, citric acid concentration and maturity index in orange varieties. Maturity indexes were found 4.22, 7.26 and 10.34 on September, October and December, respectively in mandarins whereas maturity indexes were determined as 6.47, 9.47 and 13.42 in oranges. Additionally, fruit size were positively affected by the increasing harvest date in mandarin and orange varieties. As a result of the findings obtained from this study, the optimum harvest date for mandarin varieties and Newhall navel as october and it was determined that the optimum harvest date Navelina navel was November under Güzelyurt ecological conditions

Bu araştırma, Türkiye’de kuru dane olarak kullanımı için tescil edilen dört börülce çeşidinin bazı morfolojik ve tarımsal özelliklerini belirlenerek amacıyla 2013 ve 2014 yetiştirme sezonunda, Amik ovası koşullarında, tesadüf blokları deneme desenine göre üç tekrarlamalı olarak yürütülmüştür. Araştırma sonuçlarına göre, en yüksek bitki boyu (221,8 cm) ve en yüksek ilk bakla yüksekliği (43,6 cm) Sırma çeşidinden; en yüksek bitkide dal sayısı (4,0 adet), en yüksek bakla uzunluğu (14,9 cm), en fazla bitkide bakla sayısı (19,8 adet), en fazla bitkide tane sayısı (113,5 adet), en fazla yüz tohum ağırlığı (22,2 g) ve en yüksek tane verimi (275,2 kg/da) Amazon çeşidinden; en fazla baklada tane sayısı (6,2 adet) ve en yüksek hasat indeksi (%39) ise Karagöz çeşidinden elde edilmiştir. Ayrıca yapılan korelasyon analizi sonucunda incelenen bazı özellikler arasında istatistiksel olarak hem olumlu hem de olumsuz ilişkiler tespit edilmiştir. Dekardaki tane verimi göz önüne alındığında Amik ovası koşullarında denemede yer alan börülce çeşitleri içerisinde Amazon çeşidinin üreticilere tavsiye edilebileceği ortaya çıkmıştır.

In this study, it was aimed to examine the rainbow trout Oncorhynchus mykiss (Walbaum, 1792) sperm quality during adaptation to the short term preservation conditions and to evaluate the obtained analysis results. Within the scope of research, average sperm yield and range of sperm concentration of male broodstocks that had 921,50 ± 244,86 g average weight value and 41,79 ± 2,98 cm average length value were measured as 9,56 ± 5,30 ml and 0,27-4,57 × 109 spz.ml-1, respectively. It has been determined that spermatozoas which short term preserved without using any extenders or additives between 0-4°C in laboratory were included in the scope of minimum motility categories class. In order to reach high levels of sperm quality rates in rainbow trout sperm preservation studies according to the collected data and results; paying attention to breeding season, genetic factors and building of broodstock and sperm preservation units having good quality genetic characteristics of males and females by farm owners are expected to be beneficial for sustainability and efficiency of these types of studies.