Evaluation of germination traits and mechanical damage to soybean seed during processing, under standard germination, electrical conductivity and accelerated aging tests

Sadeghi, Hossein; Mirshekarnejhad, Babak; Sheidaei, Saman; Oskouei, Bita

doi:10.22059/jci.2013.36395

Evaluation of germination traits and mechanical damage to soybean seed during processing, under standard germination, electrical conductivity and accelerated aging tests

Document Type : Research Paper

Authors

Hossein Sadeghi ¹

Babak Mirshekarnejhad ²

Saman Sheidaei ³

Bita Oskouei ³

¹ Faculty member of Seed and Plant Certification and Registration Research Institute, Karaj, Iran

² Alumni of Agronomy, College of Aburaihan, University of Tehran, Pakdasht, Iran

³ M.Sc. of Agronomy, Seed and Plant Certification and Registration Research Institute, Karaj, Iran

10.22059/jci.2013.36395

Abstract

To evaluate the germination traits and mechanical damage of soybean seed during processing stages, an
experiment was conducted in a factorial experiment based on completely randomized design with 18
treatments at Mazandaran province (Sari) in 2009-10. The experiment factors included different seed
processing stages (before cleaning, after elevator, after pre cleaning, after cleaning, after drying and after
packaging) and three cultivars (‘Telar’, ‘Sari’ and ‘Line 033’). Results showed that cultivar 033 had the
highest germination percentage (83.5%), germination percentage after accelerated aging (71.6%) and
seedling vigor index (12.76) and lowest electrical conductivity (41.73μScm-1gr-1) and it was noticed that
‘Telar’ cultivar had the highest cracked seed percentage (10.38). Effect of different seed processing steps
was significant on all traits. So that, the lowest germination percentage (78.36%), highest rate of broken
seed percentage (16.72%) and highest cracked seed percentage (13.55%) was obtained after elevator step.
Interaction effect of cultivar × different processing steps were not significant on all traits, but means
comparison showed that the highest (86.9%) was obtained in 033 cultivar after drying step and lowest
(77.8%) germination percentage was attained from ‘Telar’ cultivar after elevator.

Keywords

broken seed

Germination percentage

mean germination time

seed coat

Seed vigor