SEED PRIMING AND EXOGENOUS APPLICATION OF SALICYLIC ACID ENHANCE GROWTH AND PRODUCTIVITY OF OKRA (Abelmoschus esculentus L.) BY REGULATING PHOTOSYNTHETIC ATTRIBUTES

Mohammad Saidur Rhaman, Farjana Rauf, Shaila Shermin Tania, Md Masudul Karim, Ashaduzzaman Sagar, Arif Hasan Khan Robin, Arafat Abdel Hamed Abdel Latef, Yoshiyuki Murata

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Low and uneven germination is a serious problem for the successful production of okra seedlings. Priming of seeds as well as supplementation of different plant growth regulators exhibited better response in successful seedling production which eventually results in higher yield. Therefore, the present study was conducted to evaluate the effects of seed priming and exogenous application of salicylic acid (SA) on okra seed germination and plant development. The okra seeds were primed by 1 mM and 2 mM of SA for 60 minutes whereas the seeds were washed several times with distilled water for the control treatment. Similar doses of SA have been exogenously sprayed to the 12 days okra seedlings for 4 days. The results of the study revealed that seed priming with SA enhanced germination percentage (GP), increased coleoptile length and weight, shoot and root length, and seed vigor index (SVI). Similarly, exogenous application of 1 mM SA increased relative water content (RWC), contents of chlorophyll a, chlorophyll b, total chlorophyll while a higher dose of SA (2 mM) degraded the leaf pigments. Supplementation of SA altered photosynthetic attributes, net photosynthetic (Pn) and transpiration rate (Tr), stomatal conductance (Gs), and water use efficiency (WUE). Moreover, SA treatment reduced the time duration of flower bud initiation and days to first flowering and enhanced the yield per plant. The results of this study indicated that seed priming and exogenous application of SA enhanced germination and okra productivity by regulating RWC and photosynthetic attributes where 1 mM SA is more effective compared to 2 mM SA.

Original languageEnglish
Pages (from-to)759-769
Number of pages11
JournalJournal of Experimental Biology and Agricultural Sciences
Volume9
Issue number6
DOIs
Publication statusPublished - Dec 2021

Keywords

  • Chlorophyll contents
  • Hormonal priming
  • Photosynthesis
  • Salicylic acid
  • Seed priming

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • veterinary(all)
  • Agricultural and Biological Sciences(all)

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