HASAN PINAR, İBRAHİM ORTAŞ, Davut KELEŞ

5033

Evaluating mycorrhizal dependency of some p epper genotypes during seedling stage

Etkili mikorizal ilişki Akdeniz Bölgesindeki yıpranan topraklarda sürdürülebilir verimlilikte fosfor döngüsü için önemlidir. Bu çalışma seçilmiş biber (Capsicum annuum L.) genotiplerin mikorizal bağımlılığı ve onun sürgün fosfor kapsamı ile verim özellikleri üzerine etkisinin belirlenmesi amacıyla yürütülmüştür. Rastgele seçilmiş 20 biber genotipi mikorizal bağımlılığın belirlenmesi için cam sera koşullarında 2 dönem halinde testlenmiştir. Biber fideleri mikorizalı ( Glomus etunicatum ) veya mikorizasız olarak 6 hafta boyunca yetiştirilmiştir. Hasat zamanında kök ve sürgün bioması, kök kolonizasyonu ve sürgün P konsantrasyonu belirlenmiştir. Elde edilen sonuçlara göre biber genotipleri arasında mikorizal bağımlılık önemli varyasyon görülmüştür. Birinci denemede mikorizal bağımlılık %39 -84 arasında değişirken, ikinci denemede %21 -57 arasında değişmiştir. A300 ve A287 biber genotipleri en yüksek mikorizal bağımlılığa sahip olm uştur. Biber genotipleri arasındaki ortalama kök mikoriza infeksiyonu %48 olarak belirlenmiştir. Sürgün P konsantrasyonu %0.24 -0.42 arasında değişmiş ve ortalama %0.34 olarak gerçekleşmiştir. Elde edilen bulgular biber genotipleri arasındaki önemli mikoriz al bağımlılığı açıklamaktadır. Yüksek mikorizal bağımlılık gösteren genotipler biber çeşidi geliştirmede yüksek potansiyele sahip genetik materyal olabilecektir.

Bazı biber genotiplerinin fide döneminde mikorizal b ağımlılığının değerlendirilmesi

Effective meycorhizal associations are important for phosphorus recycling to sustain plant productivity on degraded soil in the coastal region of Mediterranean. This study was conducted to determine mycorrhizal dependency of selected pepper (Capsicum ann u um L.) genotypes and its effects on yield components and shoot phosphorus (P) concentration . Twenty pepper genotypes were randomly selected to determine the (mycorrhizal dependency ( MD )) under greenhouse at two time periods . Pepper seedlings were grown either with (Glomus etunicatum) or without mycorrhizal inoculation over a period of 6 -weeks . At harvest, s hoot and root biomass , root colonization and shoot P con centrations were determined . Results showed that MD significantly varied among the pepper genotypes. It ranged from 39 to 8 4 % in the first experiment and from 2 1 to 5 7 % in the second experiment. The pepper genotypes A300 and A287 exhibited the highest mycorrhizal dependency . Averaged across the pepper genotypes, averag e root mycorhizal infection was 48%. The shoot P concentration ranged from 0.24 to 0.42 % with an average of 0.34%. Results suggested to a significant MD -explain among pepper genotypes . The genotypes showing high mycorrhizal dependency could be a potential genetic material for pepper cultivar improvement.

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Alatarım-Cover
  • ISSN: 1304-2653
  • Başlangıç: 2015
  • Yayıncı: Alata Bahçe Kültürleri Araştırma Enstitüsü
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