| dc.description.abstract | An experiment was conducted at the Department of Genetics and Plant Breeding
Laboratory, Hajee Mohammad Danesh Science and Technology University, Dinajpur
during July to October, 2015 to investigate the effects of different levels of NaCl
solutions on germination and seedling characteristics of five genotypes of chilli. The
genotypes of chilli were Bindu, Tej1701, Lanka1820, Picnic (hybrid) and Seaty
(local) and five levels of NaCl salt solutions were control (distilled water), 4 dS/m , 8
dS/m, 12 dS/m and 16 dS/m . The experiment was laid out in completely randomized
design (CRD) with three replications. Data on germination percentage, days to first
emergence, days to maximum emergence, shoot length, root length, shoot to root
length ratio, fresh and dry weight of shoot and root and proline accumulation in
seedlings were recorded at 14th days after sowing seeds. Effects of genotypes on
germination of seed revealed that there was significant variation among five
genotypes of chilli. NaCl salt solution was significantly affected seed germination in
chilli and seed germination was decreased with increasing NaCl salt solutions. At 14th
days after sowing seeds, the highest (83.2%) percentage of seed germination of chilli
was found in control condition (0 dS/m NaCl) and the lowest (44.4%) percentage of
seed germination of chilli was found with of 16 dS/m NaCl salt solution. In case of
combined effects of genotypes and different levels of NaCl solutions on seed
germination of chilli, the highest (95.33%) percentage of seed germination was
recorded in the genotype Picnic with control i.e., without any NaCl and lowest (16%)
percentage of seed germination of chilli was found with 16 dS/m NaCl salt solution in
the genotype Seaty. The shoot length, root length, shoot to root length ratio, fresh and
dry weight of shoot and root decreased with increasing NaCl salt solutions but days to
first emergence, days to maximum emergence and proline accumulation increased
with increasing NaCl salt solution in the germination media as compared to control.
Proline accumulation was maximum in Picnic and minimum in Seaty. Among the five
genotypes of chilli, Bindu and Picnic were comparatively more tolerant to NaCl saline
action as compared to Tej1701 and Lanka1820 where as Seaty was more sensitive to
saline action. However, further studies are needed in this respect including more
genotypes of chilli as well as the salinity situations of the actual field conditions. | en_US |
