Akademik Veri Yönetim Sistemi
Tezin Türü: Yüksek Lisans
Tezin Yürütüldüğü Kurum: Erciyes Üniversitesi, Fen Bilimleri Enstitüsü, --, Türkiye
Tezin Onay Tarihi: 2021
Tezin Dili: İngilizce
Öğrenci: UBAH YAKUB OSMAN
Danışman: Ali İrfan İlbaş
Özet:
ABSTRACT
The present thesis focused on determination of the effect of
salinity on germination and seedling growth of some canola varieties. Factorial
experiments were conducted in randomized complete block design with
replications including 4 canola cultivars (PR44W29, NK LINUS, DK EXTORM, ES
NEPTUNE) and 6 salinity levels (0, 5, 10, 15, 20, 25% EC generated through
addition of 0, 2.75, 5.72, 9, 12.45 and 15.70 g/l NaCl, respectively).
Following 7 day germination tests, number of germinated seeds were counted and length
of whole plant, shoot and root fresh and dry weights were measured.
The highest germination rate (85.5%) was obtained from 0% EC
salinity level of DK EXTORM and the lowest (1.5%) from 25% EC level of NK LINUS
variety. The differences in germination rates of the experimental groups were
not found to be significant (P>0.05). The highest seedling height (74 mm)
was obtained from 5% EC level of NK LINUS variety and the lowest from 25% EC
level of PR44W29 and DK EXTORM varieties (P<0.05). The highest root length
(64.1 mm) was observed in 5% EC level of NK LINUS variety. However, because of
high salinity levels, ES Neptune and DK EXTORM and PR44W29 varieties did not
achieve root development at 25% EC salinity level (P<0.05). The highest
fresh weight (125.9 g) was obtained from 5% EC level of NK LINUS variety and
the lowest (0 g, all seedlings were dead) from 25% EC level of ES Neptune and
DK EXTORM varieties (P<0.05). The highest dry weight (5.5 g) was obtained
from 20% EC level of NK LINUS variety. Dry weights were not able to be measured
in ES Neptune and DK EXTORM varieties since seeds died at high level salinity
levels. The lowest dry weights (2.1 and 2.7 g) were obtained from 25% EC level
of DK EXTORM PR44W29 varieties, respectively. In general, decreasing
germination, seedling length, fresh and dry weights were observed with
increasing salinity levels (from 0% EC to 25% EC).
Keywords:
Canola,
salinity, germination, seedling development, NaCl.