A. Vijayakumar2, P.
S.R. Prasad1, S.
K. Raja2, R. Dhandapani1
Institute of Seed Science, Mau-275 103, India
Agricultural University, Coimbatore-641 003, India
Agricultural Sciences, GKVK, Bengaluru-560 065, India
Author Email :
Aim: The aim of the
study was to correlate the histological changes in cotyledon and embryonic
axis in aged seeds of soybean genotypes with the physiological changes and
Methodology: Ten genotypes
with differing, storability as predicted by accelerated ageing test, were
selected and various physiological parameters viz., germination per cent,
seedling length and dry weight, seedling vigour, mobilization efficiency were
studied over a period of ten months at bi-monthly interval. These were
correlated with histological changes like cell arrangement and cell membrane
integrity in cotyledon and embryonic axis of seed. The findings were further
supported by electrical conductivity test.
storer/performer (DSB 21) maintained comparatively better cell membrane
integrity in both cotyledon and embryonic axis at the end of ten months of
storage when compared to poor storer/performer (MAUS 61).
Interpretation: Maintenance of
cell membrane integrity in good storer genotype, as revealed by scanning
electron microscopy, as result of better tolerance mechanism for biochemical
degradation, is the main reason for higher physiological performance of all
the good storer/performers genotypes during storage.
Key words: Cell membrane, Embryonic axis, Histological changes,
Soybean seeds, Storability