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Pakistan Journal of Biological Sciences

Year: 2004 | Volume: 7 | Issue: 4 | Page No.: 606-610
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Research Article

Effect of Salt Stress on Growth and Na, K Contents of Pepper (Capsicum annuum L.) In Germination and Seedling Stages

Kadir Yilmaz, Irfan Ersin Akinci and Sermin Akinci

ABSTRACT

The effects of NaCl concentration (0, 50, 100 and 150 mM NaCl) on the growth and development of pepper varieties, Demre, Cetinel 150 and Ilica 256, were investigated for germination and seedling growth. The parameters measured were germination (speed and germination rate), radicle length, hypocotyl length, radicle fresh weight, hypocotyl fresh weight and the ratio of hypocotyls to radicle fresh weight in the germination stage. High NaCl had a negative effect on plant growth and development. In the seedling stage, the negative effects were relative growth rate for root and shoot length; Relative growth rate for fresh and dry weights of roots, shoots and whole plant; fresh and dry weight of shoot to root indices, relative growth rate for leaf number and area. Leaf content of K+ and Na+ and K+/Na+ were negatively affected by increased NaCl concentrations. It was found that the Na+ concentration increased whereas the K+ and K+/Na+ values decreased in leaves. Ilica 256 showed better NaCl tolerance in the germination stage and Demre was the most tolerant at the seedling stage than other varieties. This research demonstrated different NaCl tolerances for the varieties tested based on growth and development ability at germination and seedling development
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