Turkish Journal of Field Crops

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THE RESPONSE OF BREAD WHEAT GENOTYPES IN DIFFERENT DROUGHT TYPESI. GRAIN YIELD, DROUHGT TOLERANCE AND GRAIN YIELD STABILITY

Ramazan AYRANCI, Bayram SADE, Süleyman SOYLU

Abstract

The purpose of this study was to determine bread wheat genotypes with high yield potential and stability under controlled field conditions which resembled drought types exist in different plant growth stages in the Central Anatolia Region.This study was conducted using split-plot arrangement in randomized complete block design with four replications, the main plots were five drought treatments (D1: the general drought that represents the long term drought in region, D2:drought from the initiation of stem elongation to the initiation of heading stage, D3:drought from the initiation of heading to the end of flowering stage, D4:drought during grain filling period, D5: full irrigation) and ten bread wheat genotypes (Karahan 99, Bayraktar 2000, Gerek 79, Dagdaş 94, Bezostaja 1, Goksu 99, Konya 2002, BDME 09/1 K, BDME 09/2 K and 08-09 KEBVD 24) were the subplots under rain shelter in 2009-2010 and 2010-2011 plant growing seasons in Konya. The yield responses of bread wheat genotypes to drought stress were evaluated by drought susceptibility index (DSİ) and yield stability parameters.The results showed that grain yield values varied from 5771 (D3) to 8111 kgha -1 (D5) by drought treatments, and from 5686 (Goksu 99) to 7552 kgha -1 (Konya 2002) among genotypes. The grain yields of genotypes under D1, D2, D3 and D4 treatments compared to decreased 15.3, 16.6, 28.8 and 23.7 % respectively. DSI values ranged between 0.674 (Dagdas 94) – 1.919 (Goksu 99). BDME 09/1K and BDME 09/2K were varieties with wide adaptation and stability while Goksu 99 had the lowest grain yield levels in all drought stress conditions.

Keyword: Drought, drought susceptibility index, yield stability, wheat ,

Effects of Different Water Stress Levels on Biomass Yield and Agronomic Traits of Switchgrass (Panicum virgatum L.) Varieties under Semi-Arid Conditio

Erdal GONULAL, Suleyman SOYLU, Mehmet SAHIN

Abstract

A field experiment was conducted in the Wielkopolska region at the Gorzyń Research Station, Poland (52.34°N, 15.54°E) in Central Europe. The study was conducted over a 3-year period (2017, 2018, 2019) as a two-factorial design with four replications in the RCBD. The aim of the research was to determine the effect of the cultivar (‘Bolero’, ‘Tytan’) and the inoculation (Nitragina–seeds inoculation, Nitroflora I–seeds inoculation, Nitroflora II–soil inoculation, HiStick® Lupin–seeds inoculation) on plant development, seeds chemical composition and yielding of narrow-leaved lupin. The weather conditions and experimental factors significantly influenced on productivity of narrow-leaved lupin ‘Tytan’. Drought during the growing season reduced seeds and protein yields. After inoculation of HiStck the seeds yield was significantly greater by 12.4% (p < 0.01) and the protein yield after application of Nitroflora I or HiStick by 13.9% (p < 0.01) and 19.2% (p < 0.01), respectively. Correlation coefficients showed strong relations between number of pods and seeds per plant in both cultivars regardless of the inoculation variant, however the strongest relations in both cultivar were proved on HiStick treatment.
Keyword: Biological nitrogen fixation, chemical composition, legumes, protein efficiency, yielding