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  • Küçük Resim
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    Determination of the tolerance of physiological, morphological, and yield parameters of landrace durum wheat (Triticum durum Desf.) to high-temperature stress
    (Gültekin Özdemir, 2023) Okan, Mustafa; Alp, Aydın; Haliloğlu, Kamil
    In the South-eastern Anatolia Region, where the climate is favorable to cultivation for durum wheat, there have been notable reductions in both yield and quality due to biotic and abiotic stress factors in the region. Primary one of these stresses is high-temperature stress. High-temperature stress, specifically during the late flowering stage and early grain filling stage, results in substantial reductions in both crop yield and quality. In this study, several practical, easily and rapidly quantifiable physiological, morphological, and yield-related parameters that may be used in durum wheat improvement programs in the region for high-temperature stress tolerance were investigated. Ninety landrace durum genotypes and 4 standard cultivars were used. The study was carried out at GAP (South-eastern Anatolia Project) International Agricultural Research and Training Centre in an air conditioning room according to an augmented design under optimum conditions and stressful conditions where hightemperature stress was created. Compared to optimum conditions, there were reductions in flag leaf greening time by 20%, days to maturity by 7%, spike length by 10%, peduncle length by 18%, grain filling time by 23%, number of spikelets on the spike by 12%, number of grains on the spike by 39%, and thousand-kernel weight by 33%, while grain filling rate increased under high-temperature stress conditions. The genotypes 82, 83, 87, 88, 99, and 103 and the standard varieties Artuklu and Sümerli prevailed in both optimum and stress conditions. The fact that leaf erectness, flag leaf greening time, grain filling time, and leaf chlorophyll content among morphological and physiological characteristics had a significant correlation with yield components under both conditions indicates that these characteristics can be used as selection criteria for tolerance to stressful conditions in the region.
  • Küçük Resim
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    Kolzada (Brassica napus L.) Farklı memeli cinsiyet hormonlarının fide gelişimi üzerine etkileri
    (Dicle Üniversitesi Fen Bilimleri Enstitüsü, 2018) Jannati, Gholamreza; Haliloğlu, Kamil; Pour, Arash Hossein; Bolouri, Parisa
    Pamuk, Kanola (Brassica napus L.), kışlık ve yazlık olmak üzere iki fizyolojik döneme sahip bir yağ bitkisidir. Kanola tanesinde bulunan %38-50 yağ ve %16-24 protein ile önemli bir yağ bitkisidir.Memeli cinsiyet hormonları, bitkinin farklı fizyolojik sistemlerine etkisinin bulunduğu bilinmektedir. Bununla birlikte farklı cinsiyet hormunuların, kolza bitkisindefide gelişimi parametrelerine muhtemel etkileri üzerine çalışma bulunmamaktadır.Bu araştırmamızın amacı, farklı memeli cinsiyet hormonları ve dozlarının tohum fidelenme ve fide gelişimi üzerineetkileri araştırmaktır. Araştırma, tam şansa bağlı deneme planına göre 3 tekrarlı olarak yürütülmüştür. Bitki materyali olarak kolza Okapi genotipinin tohumları kullanılmıştır. Sterilize edilen kolza tohumları 4 farklı (17 β estradiol, progesteron, testesteron ve östrojen) cinsiyet hormonları’ ile oluşturulmuş 5 farklı konsantrasyonunda [(0 kontrol (saf su), 5×10-5 , 5×10-4 , 5×10-3 , 5×10-2 mM)] denenmiştir. Bu araştırmada, kök uzunluğu (KU),sürgün uzunluğu (SU),fide uzunlugu(FU), kök yaş ağrlığı(KYA), kök kuru ağrlığı(KKA), sürgün yaşağrlığı(SYA) ve sürgün kuru ağrlığı(SKA)ait veriler elde edilmiştir. İncelenen özellikler üzerine farklı memeli cinsiyet hormonları, dozları ve bunlara ait interaksiyonun tüm parametrelerde çok önemli (P<0.01) olmuştur. Sonuç olarak, en yüksek KU, SU, FU, KYA, KKA, SYA ve SKA östrojen hormonu uygulamasının 5×10-4 mM dozunda ve en düşükise progestron 5×10-2 mM ve 5×10-3 mM,β estradiol 5×10-2 mM ve 5×10-3 mM ve testestron 5×102 mM ve 5×10-3 mMuygulamalarında gerçekleşmiştir
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    Öğe
    The effect of dıfferent hormone concentratıons on anther culture and embryo formatıon ın vıtro condıtıons ın cotton gossypıum spp.
    (Dicle Üniversitesi, 2017) Korkunç, Medet; Bardak, Adem; Ekinci, Remzi; Haliloğlu, Kamil
    The aim of the study is taking the anthers obtained from immature squares to culture in appropriate medium by using the anther culture technique in cotton and ensuring that the shoots grow into plantlet from previously obtained embryos. Aşkabat-100 Gossypium barbadense L. , Coker-312 and Stoneville-468 Gossypium hirsutum L. were studied for callus induction. In the research, cotton anthers taken from immature flower buds of different lengths 2, 3, 4, 5 mm were used. In the initiated cultures; in different length anthers, in Aşkabat100 type, the maximum rate of embyroid callus obtained is at 2 mm 97.00 , in the Stoneville-468 type at 5 mm length 72.63 and in the Coker-312 anther the highest rate of embryoid callus formation obtained is at 3 mm anther length 55.80 . As a result of the research, Aşkabat-100 type produced the best results for embryoid callus, embryoid and embryo formation. For embryogenic calluses later turning into embryoids, the most suitable values are measured in non-hormone 90.73 0.1-0.5 mg/l kinetin supplemented 76.00-61.60 and 2.0 mg/l 2,4-D supplemented 97.00 medium. The highest embryo and shoot development were obtained in medium containing 66.47 0.5 mg/l kinetin. Embryo images for globular, heart, torpedo and kotiledon phases are obtained. After that, reproduction with maturing embryos and germination was observed and shoots were obtained 0.5-10 cm in length