Verbascum cheiranthifolium Boiss. var. asperulum (Boiss.) Murb. ve Salvia limbata C. A. Mey. Ekstraktlarının Zea mays L. ve Portulaca oleraceae L. Tohumlarının Çimlenmesi Üzerine Allelopatik Etkisinin Araştırılması

Artan herbisit kullanımı ve bunların çevreye zararlarından dolayı alternatif bir mücadele yolu olan allelopati ile ilgili çalışmalara ihtiyaç duyulmaktadır. Bu amaçla, Verbascum cheiranthifolium var. asperulum ve Salvia limbata taksonlarının allelopatik potansiyellerinin belirlenmesi için su ve metanol ekstraktları kullanılmıştır. Verbascum cheiranthifolium var. asperulum ve Salvia limbata ekstraktların Portulaca oleraceae L. (semiz otu) ve Zea mays L. (mısır) tohumlarının çimlenmeleri üzerine etkileri araştırılmıştır. Bu bitkilerinin su ve metanol ekstraktlarının mısır ve semizotu tohumlarına uygulamasında, artan ekstrakt konsantrasyonuna bağlı olarak radikula-plumula uzunlukları ile çimlenme yüzdelerinin azaldığı gözlenmiştir. Çalışma sonucunda daha ayrıntılı ve hassas çalışmalar yapılması durumunda, bu extraktların doğal herbisit olarak kullanılabileceği sonucuna varılmıştır.

Anahtar Kelimeler:

Allelopati, çimlenme, plumula, radikula

The Evaluation of Allelopathic Effects of Verbascum cheiranthifolium Boiss. var. asperulum (Boiss.) Murb. and Salvia limbata C. A. Mey. Extracts on Zea mays L. and Portulaca oleraceae L. Seed Germination

There is a need for studies on allelopathy, which is an anternative way of fighting, instead of herbicides and t h eir harmful effects on environment. For this purpose, water and methanol extracts of Verbascum cheiranthifolium var. asperulum and Salvia limbata taxa were used to determine allelopathic potential. The effects of Verbascum cheiranthifolium var. asperulum and Salvia limbata extracts on seed germination of Portulaca oleraceae L. (purslane) and Zea mays L. (corn) were evaluated. Radicle-plumule lengths and germination percentages of corn and purslane were decreased with increased concentrations of water and methanol extracts onseeds. With more detailed and precise future studies, these extracts may be suggested as a natural herbicide.

Keywords:

Allelopathy, germination, plumule, radicle,

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