Effect of priming treatments on germination and seedling growth of artificially aged seed of guava (Psidium guajava)

NEHA  SHARMA; J R  SHARMA; ARVIND  MALIK; AMIT  SHARMA; VIKASH  KUMAR; RITU  YADAV; AJAY  KUMAR

doi:10.56093/ijas.v92i4.124008

Authors

NEHA SHARMA Chaudhary Charan Singh Haryana Agricultural University, Hisar, Haryana 125 004, India
J R SHARMA Chaudhary Charan Singh Haryana Agricultural University, Hisar, Haryana 125 004, India
ARVIND MALIK Chaudhary Charan Singh Haryana Agricultural University, Hisar, Haryana 125 004, India
AMIT SHARMA Chaudhary Charan Singh Haryana Agricultural University, Hisar, Haryana 125 004, India
VIKASH KUMAR Chaudhary Charan Singh Haryana Agricultural University, Hisar, Haryana 125 004, India
RITU YADAV Chaudhary Charan Singh Haryana Agricultural University, Hisar, Haryana 125 004, India
AJAY KUMAR Chaudhary Charan Singh Haryana Agricultural University, Hisar, Haryana 125 004, India

https://doi.org/10.56093/ijas.v92i4.124008

Keywords:

Artificially ageing, Guava, Germination, Priming, Seed

Abstract

An experiment was conducted to study the effect of priming treatments on artificially aged seed germination and seedling growth of guava (Psidium guajava L.) at Department of Seed Science and Technology, CCS Haryana Agriculture University, Hisar during 2019–20. It is comprised 21 treatments in complete randomize design with three replications. There were five priming methods with different treatments under study i.e. tap water, GA3 (at 500, 700 and 1000 ppm concentration), KNO3 (at 0.5 and 1% concentration), thiourea (at 0.5 and 1% concentration) and HCl (at 5% and 10% for 2 and 4 min). Duration of tap water, GA3, KNO3 and thiourea soaking was kept 24 and 48 hours. The study revealed that priming the artificially aged seeds in KNO3 greatly increased germination, especially soaking of artificially aged seeds in KNO3 at 1% for 48 h which shows up to 45.0% germination. Parameter like germination%, mean germination time, seedling length, seedling dry weight and seedling vigour were positively affected by all the priming treatments. Artificially aged seed viability decreased but the standard germination efficiently increased due to priming treatments. KNO3 at 1% for 48 h improved germination and resulted in maximum dry weight of seedling (206.0 mg), seedling length (4.16 cm) and vigour index I and II (187.0 and 9271.0) in laboratory. Artificially aged seeds without any priming treatments showed poor growth and germination.

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