Effects of Dormancy-Breaking Treatments on Seed Quality Parameters in Medicinal Herb Tulsi (Ocimum tenuiflorum L.)
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Authors
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SULTAN SINGH
CCS Haryana Agricultural University, Hisar-125004
Author
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AXAY BHUKER
CCS Haryana Agricultural University, Hisar-125004
Author
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SANDEEP KUMAR
CCS Haryana Agricultural University, Hisar-125004
Author
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AMIT KUMAR
CCS Haryana Agricultural University, Hisar-125004
Author
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ANIL KUMAR DHAKA
CCS Haryana Agricultural University, Hisar-125004
Author
Keywords:
Alternate temperature, germination testing , Ocimum tenuiflorum, substrates, Tulsi, hard seedsAbstract
Tulsi, holds a revered status in various cultures around the world for its medicinal, culinary, and
spiritual significance. This study was conducted for optimizing the germination test and seed quality parameters
at alternate temperature of 20-30°C in Tulsi during 2022 in the laboratory of Department of Seed Science and
Technology, CCS HAU Hisar. Various dormancy-breaking treatments were used during the study such as, GA3 @
0.05 and 0.1% for 24 hours, KNO3@ 0.2% for 24 hours, Pre-chilling (5-10oC for 7 days), and Light treatments (16
hours light followed by 8 hours darkness). The results revealed that the germination percentage, seedling length,
seedling dry weight, vigour index-I and vigour index-II was recorded maximum in top of the paper (TP) with the
GA3 0.1% treatment and the minimum was recorded with control in sand substrate at 20-30oC alternate temperature.
The radicle emergence was recorded maximum with GA3 @ 0.1% at 7th day at 20-30oC alternate temperature.
The dormant seeds were observed maximum with control in BP and the minimum dormant seeds were recorded
with GA3 0.1% in TP at 20-30oC alternate temperature. The research reveals significant effects of these treatments
on seed germination and other crucial seedling parameters. Seeds treated with GA3 0.1% exhibited substantial
improvements in germination percentage and overall seedling quality. These findings highlight the efficacy of GA3
treatment in enhancing the germination process and seedling establishment of Tulsi under specified temperature
conditions.
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