Antioxidant capacity, total phenolic content, colour, sugar, volatiles, ascorbic acid and carotenoid (β-carotene and lycopene) contents of differently coloured and shaped tomato cultivars (cvs) grown in the Eastern Mediterranean region, Turkey were determined, along with a sensory evaluation. Tomato cultivars of two different types (cherry and beefsteak) and four different colours (red, yellow, orange and brown) were analysed. All plants were simultaneously grown in the same field and subjected to identical horticultural practices to minimise the effects of environmental conditions and to maximise those related to genotype. The red cherry cultivar had the highest lycopene content, while the orange beefsteak cultivar had the highest β-carotene content. The highest antioxidant capacity, total phenolic content and hardness scores were found in cherry-type tomatoes, except the yellow one. The red cherry cultivar had the highest sugar content. Red and brown cherry cultivars were also significant in terms of their high carotenoid and sugar contents, along with a high antioxidant activity. The brown cherry cultivar had the highest total phenol content. The highest quantities of 2-hexenal, 3-hexen-1-ol, and 6-methyl-5-hepten-2-one were detected in red cultivars. The brown cherry cultivar had the highest sweetness, typical aroma and hardness scores, while the yellow beefsteak cultivars the lowest sweetness typical aroma scores. In terms of sensory parameters, red and brown cultivars scored higher than yellow and orange ones.   ********* In press - Online First. Article has been peer reviewed, accepted for publication and published online without pagination. It will receive pagination when the issue will be ready for publishing as a complete number (Volume 47, Issue 3, 2019). The article is searchable and citable by Digital Object Identifier (DOI). DOI link will become active after the article will be included in the complete issue. *********

ÖzAraştırma, Çukurova koşullarında farklı su düzeylerinin tatlı sorgumun biyokütle verimine ve yem kalitesine etkilerini saptamak amacıyla yürütülmüştür. Araştırmada M81-E tatlı sorgum (Sorghum bicolor var. saccharatum (L.) Mohlenbr.) çeşidi materyal olarak kullanılmıştır. Araştırma, Çukurova Üniversitesi Ziraat Fakültesi Tarımsal Yapılar ve Sulama Bölümü deneme alanında 2017 yılında 2. ürün koşullarında (Haziran-Ekim), tesadüf blokları deneme desenine göre 3 tekrarlamalı olarak yürütülmüştür. Araştırmada, bitki gelişim dönemleri boyunca 4 farklı sulama suyu düzeyleri, %100 sulama (I1), %75 sulama (I2), %50 sulama (I3) ve %25 sulama (I4) uygulanmıştır. Sulamalar, 7 günlük aralıklarla ölçülen A sınıfı buharlaşma kabı (Class A-pan) değerlerine göre yapılmıştır. Araştırmada, deneme konularına toplam 227.8 ile 479.6 mm arasında sulama suyu uygulanmıştır. Hasat, salkımdaki tanelerin süt-hamur olum arası dönemde yapılmıştır. Biyokütle veriminin saptanmasının yanı sıra hasat edilen bitkiler ile silaj yapılmış olup silaj kalite özellikleri de saptanmıştır. Araştırma sonucunda biyokütle (hasıl) veriminin sulama düzeylerine göre 8733 ile 13300 kg da -1 arasında değiştiği, ayrıca en yüksek verimin I1 ve en düşük verimin ise I4 sulama düzeylerinde gerçekleştiği saptanmıştır. Uygulanan farklı su düzeylerinin, silajların başlıca kalite özelliklerinden olan nötral deterjan lif (NDF), ham protein (HP) oranı, ham kül (HK), kuru madde alımı (KMA) ve nispi yem değeri (NYD) üzerine istatistiki olarak önemli etkide bulunduğu saptanmıştır.

Dallisgrass ( Paspalum dilatatum Poir.) is an economically important and widely cultivated forage crop for livestock feeding in the tropical, subtropical, and warm temperate regions because of good adaptation to unsuitable pasture conditions. In this study, 216 dallisgrass samples were used to develop near infrared reflectance calibrations to estimate five forage quality parameters: dry matter (DM), crude protein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF) and ash. Second derivative pretreatment was applied for calibration of DM, CP and NDF while a first derivative pretreatment was used for ADF and ash. The coefficients of determination in the internal validation set ( r 2) were 0.78 for DM, 0.80 for CP, 0.95 for NDF 0.75 for ADF, and 0.71 for ash. The relative predictive determinant ratios for calibration indicate that the NDF equations were acceptable for quantitative prediction of dallisgrass quality, whereas the DM, CP, ADF, and ash equations were useful for screening purposes. The near infrared prediction models developed in this study can be used for screening in the forage breeding researches to be carried out for five quality parameters in the future.

No abstract

South Anatolian Red (SAR) and Native Southern Yellow (NSY) cattle are commonly reared in the southern region of Turkey. Although physical characteristics of these significant races that are under protection are similar, it is determined in various studies that they have different racial characteristics. The goal of this study is to evaluate lactation characteristics of two different breeds in the same region. It is observed that NSY milk has higher dry matter (%), fat (%), protein (%), lactose (%), total saturated and unsaturated fatty acids (g 100g-1) ratios than SAR milk. In the study, eight volatiles (indoles, ketones, terpenes, aromatic hydrocarbons, esters, carboxylic acids, aldehydes, alcohols) of the cattle types are researched and analyzed and they are compared during lactation periods. At the end of lactation, esters and carboxylic acids increased in NSY milk, while ketones and aldehydes in SAR milk increased. It is seen that alcohols are the most abundant volatile components found in milk of cattle. On the other hand, it is observed that lactation stages, forage type and botanical diversity affect milk flavor and quality.