Akademik Veri Yönetim Sistemi
INTERNATIONAL CONGRESS ON SUSTAINABLE AGRICULTURE, Iğdır, Türkiye, 1 - 03 Mart 2024, ss.310-316, (Tam Metin Bildiri)
Plant growth regulators have become increasingly
attractive in recent years owing to their significant contribution to improving
plant growth and productivity under adverse environmental conditions. This study investigated the impact of different melatonin doses (0, 50,
100, and 200 µM) on sweet corn seeds grown in varying soil salinity levels
(0.27, 2.50, 5.0, and 8.0 dS m-1) on leaf traits during seedling
development. The pot study was conducted in a completely randomized block
design with a factorial combination of 4 melatonin doses and 4 soil salinities
in 3 replications. After 50 days of sowing, leaf area, width, and length were
measured for a randomly selected plant from each pot using an image processing
method. Statistical differences between the examined parameters were determined
using the LSD test at a 5% significance level. The leaf width,
leaf length, and leaf area of maize seedlings decreased by 50.6%, 26.8%, and
32%, respectively, under 8.0 dS m-1 soil salinity compared to 0.27
dS m-1 soil salinity. However, 50, 100, and 200 µM melatonin doses
increased the leaf area of maize seedlings by 14.4, 19.1, 8.4%, leaf length by
3.7, 17.1, 7.9%, and leaf width by 8.9, 33.8, and 32.0%, respectively, compared
with the 0 µM melatonin dose. However, when soil salinity increased from 0.27
dS m-1 to 8.0 dS m-1 under the conditions of 0, 50, 100,
and 200 mM melatonin dose, the leaf area stress sensitivity index increased by
53.6%, 52.1%, 48.1%, and 49.1%, respectively. The study found that pretreatment
of sweet corn seeds with 100 µM melatonin significantly enhances leaf
development and salt stress tolerance during the seedling stage. Therefore,
pre-treating sweet corn seeds with 100 µM melatonin before sowing in saline
areas is recommended for sustainable sweet corn production.