Discovering the variation among genotypes is an important criterion for selecting the suitable cultivar for a certain environment. The study aimed to explore the genetic variation among 17 genotypes of barley based on grain yield and some related traits. Plants were grown under field grown conditions in the 2019-2020 and 2020-2021 growing seasons, and plant height (PH), spike per square meter (SSM), spike length (SL), spikelets per spike (NSS), seed per spike (SPS), biological yield (BY), grain yield (GY), and thousand grain weight (TGW) were measured. Results indicated that PH ranged (51.7 to 81.33 cm) and (58.20 to 79.90 cm), SSM (374 to 582) and (418 to 701), SL (7.10 to 9.63 cm) and (6.87 to 9.13 cm), NSS (9 to 15) and (8 to 17), SPS (21 to 49) and (21 to 51), BY (3466.7 to 5905.3 kg h-1) and (3731.7 to 6080 kg h-1), GY (1442 to 2192 kg h-1) and (811.8 to 1763.7 kg h-1), TGW (34 to 55.67 g) and (33.47 to 52.63 g) for the first and second year of experiment respectively. The advanced lines measurement values were higher in the second year of the experiment. It can be concluded that the advanced lines Anka-08 and Anka-11 are promising in most of the parameters. Some of the old and new cultivars still preserve their yield potential.

Bu araştırma bazı kimyasal gübre ve bitki büyümesini teşvik eden bakteri (PGPR: Bacillus megaterium, Bacillus subttilis, Lactococcus spp.) kombinasyonlarının beş arpa çeşidinde (Tarm, Beyşehir, Konevi, Karatay ve Kral) verim ve verim özellikleri üzerine etkilerini belirlemek üzere yürütülmüştür. Araştırma 2017-2018 vejetasyon döneminde tesadüf bloklarında bölünmüş parseller deneme desenine göre üç tekerrürlü olarak yürütülmüştür. Tarm çeşidi, tane verimi (423 kg/da), toplam verim (1748 kg/da), metrekarede başak sayısı (569.17 adet), başak boyu (17.01cm) ve bin tane ağırlığı (51.33 g) gibi verilerde en yüksek değerlere sahip olmuştur. Kral çeşidi tane verimi, toplam verim, başak erme süresi, metrekarede başak sayısı, bitki boyu, başak boyu ve bin tane ağırlığında en düşük değerlere sahip olmuştur. 100+B uygulaması (Ekimle birlikte 10 kg/da DAP; İlkbaharda sapa kalkmadan önce 6.2 kg N/da + PGPR) en yüksek tane verimi, toplam verim, başak erme süresi ve bitki boyu değerlerine sahip olmuştur. Kışlık ekim zamanının PGPR etkisi üzerinde kısıtlayıcı etkiye sahip olduğu, bu nedenle kışlık ekim periyodunda arpa ekilişlerinin daha erken dönemlerde yapılmasının PGPR etkisi üzerinde daha faydalı olacağı belirlenmiştir.

Purpose: Providing food for the world, growing population becomes more difficult with the increase of abiotic stresses due to climate change. The production of wheat, which is a major crop is under the threat of drought stress. The aim of this experiment was to find out to what extent biopriming reduced the effects of drought on wheat (Triticum aestivum L. cv. Slemani-2) seedling growth under in vitro conditions.Research Method: In vitro planted seedlings were subjected to drought conditions using three different watering regimes (normal [control], ½ reduced, and ¾ reduced) after biopriming the seeds with Azospirillum lipoferum, Frateuria aurantia, and Chlorella saccharophila. Physiological traits and growth characteristics were measured. ANOVA was performed according to the factorial layout in completely randomized experimental design with three replications using Microsoft Windows based COSTAT software (version 6.3). Findings:The experiment results showed that biopriming had reduced the effect of drought on chlorophyll concentration and root characteristics, especially under ½ reduced water application. A. lipoferum and C. saccharophila were more beneficial for the seedlings than F. aurantia. Physiological and growth characteristics such as chlorophyll concentration were enhanced using biopriming, hence photosynthesis, root characters, and nutrient uptake. Research Limitations:The availability of previous studies and data on the microorganisms used were the main constrain in the study. Conducting a study under controlled greenhouse conditions until harvest might provide more information as more parameters will be measured and data collected, especially at the anthesis stage as it is a crucial stage. Originality/ Value:This research provides a possible method to reduce drought impact on wheat crops by suggesting biopriming with new microorganisms.