Critical threshold temperatures and rainfall in declining grain yield of durum wheat (Triticum durum Desf.) during crop development stages

Yükleniyor...
Küçük Resim

Tarih

2022

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

National Agricultural Research & Development Institute

Erişim Hakkı

info:eu-repo/semantics/closedAccess

Özet

The effects of maximum temperature, rainfall and growing degree day on grain yield of durum wheat (Triticum durum Desf.) were studied during the period of available years (2005-2017) in the study sites. A polynomial equation was described the relationship between grain yield, maximum temperature and rainfall for four growing stages of winter wheat. The nonlinear relationships were used from time-series variations in temperatures, rainfall and yields. The maximum positive effects of rainfall (R2 =0.72*) on grain yield was in the mid-season stage (heading, anthesis and grain filling) of the crop. However, there was a negative effect of temperature more than 30°C on grain yield. The highest negative effects (R2 =0.31 through 0.86*) of maximum temperatures were in the crop development stages (vernalization and tillering). The yield might decrease about 2.5% for every 1°C increase in the growth period based on the daily mean temperature of 12.4°C for all the study locations. The critical maximum temperatures on threshold values declining yield and positive effects of rainfall on grain yield varied according to the altitudes and longitudes

Açıklama

Anahtar Kelimeler

Climate change, Critical maximum temperature, Crop development stage, Durum wheat (Triticum durum Desf.), Growing degree day

Kaynak

Romanian Agricultural Research

WoS Q Değeri

Q4

Scopus Q Değeri

Q4

Cilt

39

Sayı

Künye

Çetin, Ö., Yıldırım, M., Akıncı, C. ve Yarosh, A. (2022). Critical threshold temperatures and rainfall in declining grain yield of durum wheat (Triticum durum Desf.) during crop development stages. Romanian Agricultural Research, 39, 1-11.