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Effects of salt stress on
germination of some maize (Zea mays L.) cultivars
E. B. Carpıcı, N. Celık*
and G. Bayram
Department
of Field Crops, Faculty of Agriculture, Uludag University,
16059 Bursa, Turkey.
*Corresponding author. E-mail:
ebudakli@uludag.edu.tr.
Accepted
11 May, 2009 |
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This study
was conducted to investigate the effects of salt stress on
germination of six maize (Zea mays L.) cultivars
(ADA-523, Bora, C-955, PR 3394, Progen 1150 and Trebbia).
The degrees of salinity tolerance among these cultivars were
evaluated at seed germination stage at six different salt
concentrations (0, 50, 100, 150, 200 and 250 mM NaCl). The
results showed that in all cultivars as the salt
concentration increased, both germination percentage and
germination index decreased significantly. Responses of
cultivars to salt stress indicated differences. For all salt
concentrations, C-955 had the highest germination percentage
and germination index. Salt concentration decreased shoot
and root dry weight. Bora and C-955 had the lowest reduction
of shoot and root dry weight, respectively. Progen-1550 had
the highest reduction of shoot and root dry weight. On the
other hand, C-955 showed better results than the other
cultivars in respect of salt tolerance index. The results
showed that C-955 is the cultivar to be recommended for
saline soils. Progen-1550 was more
sensitive to salinity in this study.
Key
words:
Maize,
NaCl, germination percentage, stress tolerance ındex,
germination ındex. |
