Browsing by Author "Tekdal, S."

Now showing 1 - 2 of 2

Citation - WoS: 23
Citation - Scopus: 31
Analysis of Promising Barley (Hordeum Vulgare L.) Lines Performance by AMMI and GGE Biplot in Multiple Traits and Environment
(Aloki Applied Ecological Research and Forensic Inst Ltd, 2019) Tekdal, S.; Dogan, S.; Kendal, E.; Karaman, M.
The development of stable and adaptable new cultivars are based only on positive results obtained from the interaction between the genotype and the environment. Therefore, the study aimed to test the stability and general adaptability of promising barley lines in terms of grain yield and traits in multi -environments. For this purpose, twelve barley genotypes were used in the study. The trials were carried out with four replications in a random design at seven environments in years 2012-13 and 2013-14. The superior and stable genotypes were identified with GGE biplot and AMMI (Additive main effects and multiplicative interaction) models. The AMMI analysis showed that the major treatment sum of squares was affected by environments (80.6%), GE (14.0%) and genotypes (5.4%), respectively. On the other hand, the first two principal component axes (PCA 1 and PCA 2) contributed to the complete interaction with 88.1%, whereas, PCA 3 and PCA 4 axes only with 12.0%. The GGE biplot indicated that G4 is adaptable for all environments, while Altikat, G2 and G3 showed specific adaptation to El, E3 and E5, G6, G7 and G8 to E6, respectively. According to both techniques, G2, G3, G6, G7, G8 and Altikat were the best genotypes with high yield, whereas G4 was the best with high yield, and stable and general adaptation. The results of biplot indicated that G4 (ARUPO /K8755//MORA/3/CERISE/SHYRIHALEL I/4/CANELA/5/HART-BAR) was recommended for release and it was released as HEVSEL in 2017. On the other hand; G7 and G6 were protected as genetic material to use as parent in breeding programs for yield stability and quality respectively.
Examination of physio-morphological parameters related with high heat stress tolerance in durum wheat
(Scibulcom Ltd., 2017) Tekdal S.; Kendal E.; Kendal, E.; Tekdal, S.
The heat stress restricts the yield and quality parameters of durum wheat. The objective of this study was to examine some physiological and morphological parameters, which can be easily and quickly measured and resistance to heat stress in durum wheat breeding program. The study was conducted by using a total of 13 of durum wheat genotypes. Trials were conducted in irrigated conditions according to randomised complete blocks design with split plots and 3 replications as normal and late planting time. Drought stress was eliminated with irrigation and heat stress was formed with late planting time. According to heat susceptibility index (HSI), calculated over grain yield, Firat-93, Diyarbakir-81 and Sariçanak-98 varieties showed tolerant/medium tolerant. Low canopy temperature (CT), leaf erectness and waxiness were related with heat tolerance. Although SPAD readings did not relate heat tolerance, it can be used to select the genotypes which have high yield potential. Moreover, the GGE biplot indicated that PCA 1 and PCA 2 axes (principal component) were significant as P < 0.01 and supplied to 76.29% of the complete GT (Genotype × Trait) interaction. When the parameters were analysed for genotypes, four different groups were formed, in which grain filling speed (GFS) formed the first group, chlorophyll content (SPAD), waxiness (WXN), flag leaf steepness (FLS), grain yield (GY) formed the second group, canopy temperature depression (CTD) formed the third group and grain filing duration (GFD) formed in the fourth group. The traits, which located in same group, related to each other. On the other hand, GGE biplot showed that planting times took place in different mega-environments and some cultivars were related with normal planting time, while some others genotypes were related with late planting time. Statistical results indicated that GGE biplot are informative techniques to compare varieties with planting time and traits to discover general stability, adaptation pattern for practical recommendations.