FARKLI BİTKİ TOHUMLARININ ÇİMLENME, İMBİBİSYON VE SU ALINIMINA KADMİYUM, KURŞUN VE NİKELİN ETKİSİ

Yıl 2008, Sayı: 017, 1 - 10, 15.12.2008

Kadriye Uruç , Dilek Demirezen Yılmaz

Öz

Phaseolus vulgaris ve Rumex scutatus tohumlarında imbibisyon, su alınımı ve çimlenmeye farklı metal tuzlarının etkisi laboratuar koşullarında incelenmiştir. Tohumlar, değişen onsantrasyonlarda; 0, 100, 1000, 10000 mg L-1 Pb, 0, 50, 100, 1000 mg L-1 Ni ve 0, 80, 160, 320 mg L-1 Cd metal solusyonları ile muamele edilmiştir. Kurşun ve kadmiyum P.vulgaris’de çimlenmeyi geciktirmiştir. Çimlenme yüksek Ni ve Pb +2 konsantrasyonunda inhibe olmuştur. Bununla birlikte, çimlenme oranının diğer metallerin düşük konsantrasyonlarından ziyade, 100 mg L-1 Pb’de belirgin şekilde daha yüksek olduğu tespit edilmiştir. Ayrıca, tohumlardaki imbibisyonun da metal tuzlarından etkilendiği gözlenmiştir.

Anahtar Kelimeler

Kadmiyum, çimlenme, imbibisyon, kurşun, nikel, Phaseolus vulgaris, Rumex scutatus

EFFECT OF CADMIUM, LEAD AND NICKEL ON IMBIBITION, WATER UPTAKE AND GERMINATION FOR THE SEEDS OF DIFFERENT PLANTS

Öz

The effect of different metal salts on the imbibition, water uptake and germination of Phaseolus vulgaris and umex scutatus was studied under laboratory conditions. Seeds were treated with solutions of the following concentrations; 0, 100, 1000, 10000 mg L-1 Pb, 0, 50, 100, 1000 mg L-1 Ni and 0, 80, 160, 320 mg L-1 Cd. Lead and cadmium was delayed germination in P.vulgaris.Germination was strongley inhibited by higher Ni and Pb+2 concentrations. However, germination rate was significantly greater at 100 mg L-1 Pb than lower concentrations of other metal salts. It was also shown that imbibiton of seeds was affected by metal salts.

Anahtar Kelimeler

Cadmium, germination, imbibition, lead, nickel, Phaseolus vulgaris, Rumex scutatusl

Kaynakça

• [1] Das, P., Samantaray, S. and Rout, G.R. “Studies on cadmium toxicity in plants: a review”. Environ.Pollut. 98: 29–36 (1997).
• [2] Valverde, T., Quijas, S., Lo´ pez-Villavicencio, M. and Castillo, S., “Population dynamics of Mammillaria magnimamma Haworth (Cactaceae) in a lava-field in Central Mexico”. Plant Ecology 170, 167–184. (2004).
• [3] Vidal-Valverde, C., Frı´ as, J., Sierra, I., Blazquez, I., Lambien, F. And Kuo, Y-H. “New functional legume food by germination. Effect on the nutritive value of beans, lentils and peas.” European Food Research and Technology. 215: 472–476. (2002).
• [4] Wierzbicka,M. and Obidzinska,J. “The effect of lead on seed imbibition and germination in different plantspecies”. Plant Science. 137: 155-171. (1998).
• [5] Lewitt,J. “Responses of Plants to Environmental Stresses”, Vol. 1, 2nd ed. Academic Press, New York.(1980).
• [6] Fargasová, A. “Effect of Pb, Cd, Hg, As and Cr on germination and root growth of Sinapsis alba seeds”.Bull. Environ. Contam. Toxicol. 52: 452–456. (1994).
• [7] Godı´ nez-Alvarez, H., Valiente-Banuet, A. and Valiente-Banuet, L. “Biotic interactions and thepopulation dynamics of the long-lived columnar cactus Neobuxbaumia tetetzo in the Tehuacan Valley,Mexico”. Canadian Journal of Botany, 77, 203–208. 1999.
• [8] Wozny, A., B. Zatorska, F. M. and Wierzbicka. “Influence of lead on the development of lupin seedlingsand ultrastructural localization of this metal in the roots”. Acta Soc. Bot. Pol. 51: 345–351. (1982).
• [9] Mukherji, R. and P. Maitra. “Growth and metabolism of germinating rice Oryza sativa L.) seeds asinfluenced by toxic concentrations of lead”. Z. Pflanzenphysiol. 81: 26–33. (1977).
• [10] An, Y. “Soil ecotoxicity assessment using cadmium sensitive plants”. Envir. Pollution, 127:21-26.2004).