This study aims to detect early drought tolerance of upland
rice cultivars during germination. Sealing plants with better drought tolerance
is especially important in dry environments. However, drought simulation that
is controlled and uniformly repeated in the field cannot be easily achieved.
Climate change in the form of drought will reduce agricultural production, so
it is necessary to develop superior drought-tolerant varieties. This
experimental study was arranged with a factorial pattern of two factors using a
Completely Randomized Design from September to December 2021 at the Seed
Science and Technology Laboratory, Faculty of Agriculture, Tadulako University,
Palu, Center Sulawesi, Indonesia. Twelve
cultivars comprised the first factor, while two superior drought-resistant
variants served as comparators. The second factor is osmotic stress, namely P0
= control, P1 = -1 bar, P2 = -2 bar, and P3 = -3 bar, so there are 56 treatment
combinations repeated four times, so there are 224 experimental units. The
observed variables were maximum growth potential, germination rate, radicle
length, plumule length, radicle dry weight, plumule dry weight, sprout dry
weight, water volume, and germination rate. Delay in seed germination caused by
PEG administration up to -3 bar has caused metabolic disturbances such as
slower hydrolysis of storage compounds in the endosperm or cotyledons and
slower transport of the hydrolyzed material to the axis of the developing
embryo under drought conditions.
Author(s)details:-
Sakka Samudin
Agrotechnology Study Program, Faculty of Agriculture, Tadulako University,
Indonesia.
Please See the book
here :- https://doi.org/10.9734/bpi/racas/v8/101
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