Türkiye’nin farklı bölgelerinden toplanmış olan su kabaklarının bazı bitkisel özellikleri

K&uuml;lt&uuml;r&uuml; yapılan Lagenaria siceraria (Malign) Stanley yaygın olarak beyaz &ccedil;i&ccedil;eklenen kabak olarak bilinmektedir. Tek yıllık, monoik ve trmanarak yetişme &ouml;zelliğine sahip olan&nbsp; su kabağının doğada 5 yabanisi bulunmkatadır. Sebze olarak t&uuml;ketilen L. siceraria&rsquo;dır. T&uuml;rkiye su kabağının anavatanı olmamasına rağmen &ouml;zellikle meyve şekli ve b&uuml;y&uuml;kl&uuml;ğ&uuml; a&ccedil;ısından b&uuml;y&uuml;k bir &ccedil;eşitlilik g&ouml;stermektedir. &Uuml;lkemizde su kabağı; besin olarak, m&uuml;zik aleti, gıda saklama kabı ve dekoratif ama&ccedil;lı kullanılmaktadır. Ancak son 25-30 yıldır genotipler kaybolmaya başlamıştır. Bu &ccedil;alışmada &ouml;zellikle &uuml;lkemizin g&uuml;ney b&ouml;lgerlinden toplanmış olan su kabaklarının morfolojik &ouml;zelliklerinin belirlenmesi ama&ccedil;lanmıştır. 2003 ve 2004 yıllarında 14 ilimizden toplanmış olan 190 adet su kabağı genotipinde fideler cam serada yetiştirilmiş, her genotipten 10 adet &nbsp;fide olmak &uuml;zere a&ccedil;ık tarla koşullarına dikilmiş ve yetiştirilen su kabakları IBPGRI&rsquo;ın kabakgillerin i&ccedil;in geliştirmiş olduğu descriptor liste gore karterize edilmişitir. Değerlendirme sonucunda meyve ve bitki &ouml;zellikleri a&ccedil;ısından &ouml;nemli farklılıkların olduğu tespit edilmitir. flowered bottle gourd.&nbsp; It has been cultivated annually and it is a monocious, vigorous climber species and five wild perennial diocious species and the fruits are generally eaten as a vegetable.&nbsp; The landraces of L. siceraria in Turkey show great diversity, particularly in fruit size and shape although Turkey is not center of genetic diversity for L. siceraria.&nbsp; In Turkey, L. siceraria are used as food, music instrument, and containers, corresponding to characteristic of the fruit.&nbsp; However, landraces has been gradually disappearing in last 25 year. In 2003 and 2004, 190 bottle gourds collected from 14 provinces were used as plant material. Seedlings grown in greenhouse were transplanted in open field and grown under open field conditions. The genotypes were characterized according to descriptor list developed by IBPGRI for cucurbits. It was found that there were significant variation between genotypes as regarded to characteristics of fruit and plant.&nbsp;</p

Collection and morphological characterization of Legenaria siceraria germplasm form the Mediterranean Region of Turkey

Abstract The landraces of Lagenaria siceraria in Turkey show great diversity for morphologic traits, particularly in fruit size and shape even though Turkey is not centre of genetic diversity for L. siceraria. In Turkey, L. siceraria is used as food, musical instruments and containers, according to the type and shape of their fruits. Its diversityhas been gradually declining over the last 25 years. With the aim of assessing variations in plant, fruit and seed morphology among the L. siceraria landraces, 15 field trips for collection of germplasm to southern parts of Turkey (Mediterranean region) were carried out in the period of 2003–2004. The study also aimed at developing a representativecore collection of the material to guide future studies and uses concerning its existing genetic diversit in Turkey. A total of 182 accessions (fruits and/or seeds) were collected. The seeds from all the sample material were sown in green house conditions at the experimental station of the Faculty of Agriculture of the Mustafa Kemal University inHatay (Antakya), (36 180 2200 N, 36 130 3300 E, 82 m). In the spring of 2004, 162 out of the 182 sown seeds germinated and developed into viable seedlings. These were further transplanted in the field in 10 replicates. The morpho-agronomic characterization was carried out following the international standards for crop descriptors set byBioversity International. The data were subject to both descriptive statistics and multivariate analysis by Principle Component Analysis. The descriptive statistics revealed that the whole collection exhibits a great deal of morphological diversity and that the subset core collection represents most of the variability. The first three principle components, calculated by using six quantitative traits, explained 26%, 21% and 17% (a total of 64%) of the totalvariation. Among the studied accessions, no apparentlydistinct patterns such as geographical origin were detected. This may suggest that the accessions have been introduced to Turkey from multiple locations and/or their diversity had been distributed almost evenly across the Mediterranean region of this country. Based on our results from the morphological characterization, 30 genotypes were selected to develop a subgroup (core) collection in order to represent most of the genetic diversity of all accessions. The work presented here is the first report about morphological characterization of Turkish L. siceraria germplasm

A phase II study of paclitaxel and cisplatin combination chemotherapy in recurrent or metastatic head and neck cancer

The taxanes are the most active new agents for squamous-cell carcinoma of the head and neck (SCCHN) since the discovery of cisplatin. Our aim was to define the therapeutic efficacy and toxicity of paclitaxel and cisplatin combination therapy in patients with recurrent SCCHN. Patients with locally recurrent or metastatic SCCHN were enrolled in the study. Patients were required to be chemotherapy-naive, and should have completed radiation therapy at least 6 weeks prior to enrollment. A World Health Organization (WHO) performance status of less than 3 was required. Paclitaxel (Taxol((R)), Bristol Myers Squibb Company, Princeton, NJ) and cisplatin therapy (PC) consisted of prophylaxis with pheniramine 50 mg i.v., ranitidine 150 mg i.v. and dexamethasone 20 mg i.v. given prior to paclitaxel 175 mg/m(2) as a 3-hour i.v. infusion, followed by cisplatin 75 mg/m(2) as a 1-hour infusion with an additional 3000 cc of saline for hydration. This treatment was repeated every 3 weeks for a maximum of six cycles. Patients were evaluated for response after the third and sixth cycles, or at the time of clinical progression. Fifty patients were enrolled in the study. The overall response rate was 32% with a 10% complete response rate. Forty-eight patients were assessable for toxicity. A total of 221 cycles of chemotherapy was given and the most common toxicity was myelosuppression; 7.7% of cycles had grade III-IV neutropenia. Severe neuropathy, nephropathy, mucositis, and emesis were uncommon (<10%). At a median follow-up period of 25 months, the median overall survival was 10 months and the 1-year progression-free and overall survival rates were 16.7% and 35.2%, respectively