Makale

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Browsing Makale by ORCID "0000-0002-7247-9116"

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    Çin Karanfili (Dianthus chinensis L.) İçin Mutasyon Islahı Çalışmasına Yönelik Etkili Mutasyon Dozun Belirlenmesi
    (Dergipark, 2024-10-14) Çakın, Irmak; Kantoğlu, K. Yaprak; Kunter, Burak; Göktuğ, Aslıhan
    Karanfil süs bitkileri içinde mutasyon ıslahına en yatkın olan türlerden bir tanesidir. Bu çalışmada ticari öneme sahip Çin karanfili çeşidinde (Dianthus chinensis L.) yeni çeşit geliştirilmesine yönelik olarak yürütülmesi planlanan mutasyon ıslahı çalışması için çeşide özgü etkili mutasyon dozunun belirlenmesi hedeflenmiştir. Etkili mutasyon dozunun (EMD50) belirlenmesinde fiziksel mutagen olarak (Sezyum 137) Cs137 gamma kaynağı kullanılmıştır. Karanfil tohumlarına 0, 50, 100, 200, 300, 400, 500 ve 600 Gy olmak üzere yedi farklı dozda ışınlama yapılmıştır. Her doz için otuz adet tohum ekilmiş olup, bu tohumların ışınlamadan 30 gün sonraki bitki gelişimleri gözlenmiştir. Işınlamadan ardından otuzuncu günde elde edilen bitkilerde sürgün gelişimine yönelik ölçümler alınmıştır. Bu ölçümlerden elde edilen ortalama veriler ile lineer regresyon analizi gerçekleştirilerek EMD50 belirlenmiştir. Yapılan analiz sonuncunda 172.16 Gy’lik doz EMD50 değeri olarak tespit edilmiştir.
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    Gamma rays induced enhancement in the phytonutrient capacities of tomato (Solanum Lycopersicum L.)
    (Frontiers, 2023-08-03) Kantoğlu Kadriye Yaprak; İç Erhan; Özmen Dilan; Bulut F. Şebnem; Ergun Ece; Kantoğlu Ömer; Özçoban Mustafa
    One of the most important problems for the field-grown Ayaş tomato (Solanum lycopersicum Ayas population), which is preferred for consumption in Central Anatolia because of its aromatic taste, is that the shelf life is short because of insufficient fruit firmness. Therefore, a study was initiated to develop high-quality lines and variety candidates through mutation breeding in the current Ayaş population. In this study, the effective mutation dose (EMD50) was found to be 150 Gy for seeds using a Cobalt-60 gamma ray source. The main mutant population was generated by applying EMD50. During the study, mutant lines selected by following the classicalmutation breeding stages were evaluated in terms of yield and quality traits (antioxidant content, total soluble solid amount, fruit firmness, Brix, etc.) starting from the M4 stage. One of our aims was to determine and improve the phytonutrient content of field-grown tomatoes. The fruits of selected lines at the M4 stage were extracted by liquid-liquid partition and accelerated solvent extraction techniques and analyzed by High Performance Liquid Chromatography (HPLC) in this study. Itwas found that 28 of the 29mutant lines were significantly different from the control and mutant lines. Mutant lines 9-22, 8-90, 8-135, and 8-127 were determined to be the most promising for commercialization.
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    Influence of Gamma Irradiation on Pollen Viability, Pollen Tube Growth, and Fruit Development in Tomato (Solanum lycopersicum L.)
    (The Horticulture Journal / The Japanese Society of Horticulture, 2024-03-16) Kantoğlu Kadriye Yaprak; 372103
    The goal of this study was to assess whether irradiated pollen technology could be used in tomato breeding research. The effects of irradiation on pollen viability, fruit set rate, and embryo formation were investigated. For this purpose, pollens were exposed to gamma rays of 0, 50, 100, 200, 300, and 400 Grays (Gy). The effect of irradiation on pollen viability and tube growth was found to be significant based on counting and measurements performed under in vitro conditions at 24, 48, 72, and 144 h after irradiation. Fruit set and embryo formation in seeds were evaluated 30 days after pollination with pollen irradiated at different doses. It was determined that increasing the irradiation dose resulted in reduced pollen viability and tube length. Endosperm formation was detected in all seeds after 50 Gy of irradiation. However, 50 Gy had no effect on gynogenesis stimulation. Therefore, 100, 200, and 300 Gy doses stimulated embryo formation without endosperm, while 400 Gy of irradiated pollen did not support fruit to set. These results indicate the importance of harvesting time to obtain viable embryos. It should be retracted to an earlier time since late harvest resulted in necrosis of globular embryos on the 30th day after irradiation. Pollination with one-day-old irradiated pollen was more suitable for gynogenesis induction. The results showed that the irradiated pollen technique can be applied in tomato breeding studies, especially in terms of purifying the obtained breeding lines in a shorter time. In particular, determining the appropriate induction dose for gynogenesis depending on the genotype is important for stimulation efficiency.
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    Ray-Floret Based Rapid Propagation and Detection of Somatic Variation in Selected Mutant Chrysanthemum Individuals
    (Dergipark, 2024-09-11) KANTOĞLU, Kadriye Yaprak; KUNTER, Burak; ŞENEL,Ümran; HASPOLAT, Gülden
    Chrysanthemum (Dendranthema × grandiflora Tzvelev) is an attractive plant species that responds well to mutation breeding research conducted worldwide. The isolation and propagation of mutant individuals are very important for detecting mutations in in vitro cultures. Using in vitro cultures, it is easy to isolate solid mutants. In this study, the homogeneous reproductive capacity of selected mutant individuals after irradiation was examined using ray floret cultures at the M1V1 stage, based on various flower colors and architectures. The explant materials were obtained from selected mutant plants with yellow, dark red, orange, and spoon-shaped ray florets cultivated in full bloom. After the determination of an effective sterilization method, the ray florets were cultured in Murashige and Skoog's (MS) media, which contained 0.5 mg L-1 1-Naphthalaneacetic acid (NAA) and 2.0 mg L-1 6-Benzylaminopurine (BAP). The average rate of plantlet regeneration varied depending on the genotype; mutants with yellow-colored flowers generated 0.6 plantlets per explant, those with orange-colored flowers (1.11), those with dark red-colored flowers (1.16), and those with spoon-shaped flowers (2.71). After plant regeneration, plantlets were cultured in hormone-free MS nutrient medium to ensure full-rooted plant development. The findings of this study showed that in vitro ray floret culture could be used to swiftly and successfully carry out vegetative reproduction of pot-type Brandevil mutants, which are more susceptible to in vivo cutting propagation than pot-type Chrysanthemum cultivars. In the propagating material, there were obtained four differently colored somaclonal plants, eleven partial somaclonal plants with incurved-type ray florets, eight somaclonal plants with spatulate-type florets, one somaclonal plant with a semi-double-type flower head, and two somaclonal plants with pointed and reflexing ray florets.