of seed priming induced metabolic changes on germination
field emergence of chickpea
Lamichaney1*, V. Kumar2 and P.K. Katiyar1
Division, ICAR-Indian Institute of Pulses Research, Kanpur-208 024, India
2Division of Basic
Science, ICAR-Indian Institute of Pulses Research, Kanpur-208 024, India
Paper received : 06.07.2017
Revised received : 19.12.2017
Accepted : 16.01.2018 ?????
Aim: Seed priming
improves vigour, however, different priming agents may vary in their
effectiveness. Therefore, main aim of this study was to decipher the
physiological mechanism of vigour improvement following seed priming using
different agent. ??????
cultivar Kripa was primed with different concentration of poly ethylene
glycol, mannitol, salicylic acid, gibberellic acid and water for varying
duration. Dry unprimed seed was used as control. De novo protein
synthesis, sugar content, electrical conductivity of seed leachate,
germination percent, time to 50% germination, uniformity of germination,
germination energy, field emergence, hundred seed weight, seed yield were
determined to understand the physiological basis of priming. ???
Results: Priming reduced time to 50% germination, mean
germination time and improved germination energy, final germination, field
emergence and seed yield over control. Overall, the favourable? effect of
seed priming were related to de novo protein synthesis, an improved
membrane repair (revealed by low ion leakage) and germination substrates
(increased sugar content) for vigorous and earlier production of seedlings.??
the treatments, seeds primed with water for 17 hrs and PEG -0.5 / -1.0 Mpa
for 24 hrs were most effective in enhancing field emergence and seed yield of
chickpea and can be therefore recommended for increasing productivity in