Nitrogen Concentrations of Different Plant Parts of Wheat at Anthesis and Maturity Under Normal and High Temperature Conditions
Öz
Understanding nitrogen dynamics of wheat under different temperature conditions may provide valuable informations to maintain the sustainability of wheat production, improve food security and reduce production costs. A field trial was established to observe and evaluate nitrogen concentrations of different wheat plant parts at anthesis and maturity under normal and high temperature conditions. Two different temperature regimes were provided by planting seeds at two different calender times (normal wheat sowing time and a quite late time to receive warmer conditions). Also two different irrigation regimes were applied to distinguish the impact of drought from temperature.
On the plant parts basis, nitrogen concentration was maximum at flag leaf and minimum at lower stem both at anthesis and maturity. On the basis of temperature regimes, nitrogen concentrations were higher at high temperature regime compared to normal temperature regime for each plant parts both for anthesis and maturity except upper stem at maturity. Irrigation was increased nitrogen concentrations of each plant parts both at anthesis and and maturity under normal temperature regime. But oppositely, irrigation has a reducing effect on nitrogen concentrations of each plant parts both at anthesis and and maturity under high temperature regime except again at upper stem anthesis maturity. Nitrogen concentration of husks-awn-axis at maturity was increased both by high temperature and irrigation applications. Nitrogen concentration of spikes at anthesis was higher under high temperature. Nitrogen concentrations of grains at maturity was increased by high temperature and was maximum at high temperature rainfed condition.
Our investigations showed that nitrogen concentrations of flag leaf, lower leaves and lower stem followed same pattern between applications and there exists a correlation between grain nitrogen concentration.
Anahtar Kelimeler
Kaynakça
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Ayrıntılar
Birincil Dil
İngilizce
Konular
Mühendislik
Bölüm
Araştırma Makalesi
Yazarlar
Uğur Sevilmiş
Eastern Mediterranean Agricultural Research Institute
Türkiye
Yayımlanma Tarihi
4 Ocak 2018
Gönderilme Tarihi
3 Temmuz 2017
Kabul Tarihi
22 Aralık 2017
Yayımlandığı Sayı
Yıl 2017 Cilt: 7 Sayı: 2