Stability of Quality Parameters of Bread Wheat (Triticum aestivum L.) Genotypes Under Drought Stress Condition

Year 2020, Volume: 6 Issue: 1, 27 - 37, 01.01.2020

İrfan Ozturk Z. Kayıhan Öztürk

Abstract

Change in amount and distribution of precipitation during grain filling period is one of the major limiting stress factors
of wheat quality and yield in Trakya region. Identification of the genetic stability and development of good quality
cultivars are very important issues for wheat production in the region. In the present research, it was investigated that the
effects of various levels of drought stress condition at different plant growth phase in quality parameters of bread wheat
genotypes. This research was conducted in 2008-09 and 2009-2010 growing seasons. The experiment was established
with 15 genotypes in randomised complete block design with 3 replications. Drought treatments were on the main parcel
and genotypes on the sup-plots. In the research; grain yield, 1000-kernel weight, test weight, protein content, hardness,
wet gluten, gluten index and sedimentation value and also correlation among these characters with stability parameters
were investigated in wheat genotypes. According to results of the research; protein content, wet gluten content, hardness
and sedimentation were negatively affected under irrigation condition during grain filling phase. Drought stress condition
at GS51-94 had a positive effect on protein content, wet gluten and hardness. The highest test weight and 1000-kernel
weight was determined under irrigation conditions. Non-treatment condition had a significant effect on sedimentation
value. Based on stability parameters genotypes Pehlivan, Aldane and BBVD7 well adapted to overall environmental
conditions for 1000-kernel weight. For test weight cultivars Gelibolu, Kate A-1, and Pehlivan were well adaptable to
overall environmental conditions. Aldane had higher sedimentation under fertile environmental condition. Evaluation of
quality parameters and drought application Aldane was the best performing cultivar and limitation of irrigation during
grain filling period had a positive effect on quality parameters except 1000-kernel weight and test weight.

Keywords

Bread wheat, quality parameter, drought treatments, stability parameters

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