selected from 5-month-stored seed (10 C) and incubated for 14 d
in sterilized Petri dishes placed on moist paper towels under constant
lighting at room temperature (25e30 C). The percentages of
seed germination, seedling shoot height and root length of 100
seedlings were recorded. The seedling vigor index (SVI) was
calculated using the formula; SVI ¼ Germination (%) Seedling
length (Doni et al., 2014b).