Drought is a major abiotic stress that threating the producing and survival of many crops such as cereal. Wheat is grown on arid lands and drought often causes serious problem in wheat production on these fields. In this study, it was determined that the effect of five different drought stress (0, -0.3, -0.6, -0.9, -1.2 MPa, by using PEG 6000 solution) on the germination of 4 different bread wheat cultivars (Tekin, Pehlivan, DZT13-1 and DZT13-2). The study was carried out according to completely randomized design in factorial arrangement with four replications. In the present study, important growth parameters like germination rate (%), seedling vigor (%), coleoptile length (cm), root length (cm) and shoot length (cm) were observed. Results showed when dose of PEG increased, seedling growth was significantly affected. Increasing drought stress was resulted with a decrease on germination rate, seedling vigor, coleoptile length, root length and shoot length.
The aim of this study was to evaluate different rootstocks for improving triploid seed production of the dessert watermelon, Citrullus lanatus. This 2-year study was conducted at two locations, in open fields at Antalya and Adana, Turkey, during the 2016 and 2017 growing seasons. The tetraploid watermelon line 'ST 101' was used as the female parent scion and the diploid line 'WL 92' as the male parent. Both parental lines were grafted onto three different rootstocks to determine the effect of grafting on seed yield and quality of triploid watermelon. Nun 9075, a Cucurbita interspecific hybrid (Cucurbita maxima × Cucurbita moschata), Argentario (Lagenaria siceraria), and citron watermelon PI 296341 (Citrullus amarus) were used as rootstocks. Nongrafted ST 101 and WL 92 were also crossed to be used as controls. The graft combinations and controls were compared for performance as measured by length, diameter and number of nodes of main stem, total yield, mean fruit weight, fruit length, fruit diameter, seed yield, number of seed per fruit, weight of 1000 seeds, seed germination and emergence percentage, days to germination and emergence, and seed coat and embryo weight ratio. Nun 9075/ST 101 and Argentario/ST 101 graft combinations resulted in longer main stems; increased total yield; heavier, longer, and wider fruits; and higher seed yield and number of seeds per fruit as compared to PI 296341/ST 101 graft combination and the controls in both locations and years.
Grafting techniques are being used to improve economically important horticultural crops including Cucumis melo L. This 2-year study was carried out at Cukurova University, Adana, Turkey. This study aimed to evaluate the effects of grafting using different rootstocks on plant, fruit and seed quality in cantaloupe melons. The double haploid (DH) female (H27) and male (H4) parental lines of Solmaz F1 (Cucumis melo L. var. cantalupensis) variety developed by Cukurova University Faculty of Agriculture were used as scion and three commercial interspecific hybrid Cucurbita (Cucurbita maxima Duchesne × Cucurbita moschata Duchesne) varieties, Nun-9075 F1 (Nunhems), Ares F1 (ITU) and TZ-148 (Clause) were used as rootstocks. The parental lines were also self grafted and ungrafted parents were used as the control group. The grafted and ungrafted parents were crossed during pollination. Graft combinations and control were compared for performances in measured parameters such as the main stem length (cm), main stem diameter (mm), node number, harvest time (day), fruit weight (g), fruit length (cm), fruit diameter (cm), fruit cavity length (cm), fruit cavity diameter (cm), fruit flesh thickness (cm), fruit rind thickness (mm), total soluble solids (TSS, %), fruit flesh productivity (%), number of full and empty seeds (number/fruit), 1000 seeds weight (g), seed germination rate (%) and time (day), seed emergence rate (%), and time (day). Most of the plant, fruit and seed parameters have been positively affected by grafting. The use of commercial interspesific Cucurbita hybrid rootstocks resulted in high values compared to the control group however, harvest time, fruit cavity length and diameter, fruit rind thickness and fuit flesh productivity parameters were not statistically significant between rootstocks. Considering seed emergence and germination rate Cucurbita hybrid rootstocks performed lower values than self grafted and ungrafted control. The current study concludes that grafting plays a crucial role in plant growth, fruit and seed characters in cantaloupe melons. Statistically significant differences were mostly observed based on evaluated parameters.
Bu çalışmada aşılamanın meyve özellikleri üzerine etkisini incelemek amacıyla, Ares Fı, Nun 9075 Fı ve TZ 148 Fı olmak üzere 3 adet Cucurbita hibrit (C. maxima Duch. x C. moschata Duch.) anacı kullanılmıştır. Bu anaçlar üzerine kalem olarak ülkemizde ticari olarak yetiştiriciliği yapılan Kırkağaç tipi Sinem 45 Fı ve Sürmeli Fı (Cucumis melo L. var. inodorus; Verim, Ziraat) aşılanmıştır.Sinem 45 Fı ve Sürmeli Fı kavun çeşitleri kendi üzerine de aşılanmış olup, aşısız bitkileri ise kontrol olarak kullanılmıştır. Çalışmada meyve ağırlığı (g), meyve yüksekliği (cm), meyve çapı (cm), çekirdek evi yüksekliği (cm), çekirdek evi çapı (cm), meyve eti kalınlığı (cm), meyve kabuk kalınlığı (mm) ve SÇKM (%) değerleri incelenmiştir. Araştırma bulgularına göre, incelenen parametreler
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