Foliar Application of Gibberellin Alleviates Adverse Impacts of Drought Stress and Improves Growth, Physiological and Biochemical Attributes of Canola ( Brassica napus L.)

Nosheen Noor Elahi (), Sadia Raza, Muhammad Shahid Rizwan, Bedur Faleh A. Albalawi, Muhammad Zubair Ishaq, Hafiz Munir Ahmed, Sajid Mehmood, Muhammad Imtiaz, Umer Farooq, Muhammad Rashid and Allah Ditta ()
Additional contact information
Nosheen Noor Elahi: Institute of Pure and Applied Biology, Bahauddin Zakariya University Multan, Multan 60800, Pakistan
Sadia Raza: Institute of Pure and Applied Biology, Bahauddin Zakariya University Multan, Multan 60800, Pakistan
Muhammad Shahid Rizwan: Cholistan Institute of Desert Studies, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
Bedur Faleh A. Albalawi: Department of Biology, University of Tabuk, Tabuk 71491, Saudi Arabia
Muhammad Zubair Ishaq: Department of Plant Breeding and Genetics, Faculty of Agricultural Science s and Technology, Bahauddin Zakariya University Multan, Multan 60800, Pakistan
Hafiz Munir Ahmed: Nuclear Institute for Food and Agriculture (NIFA), Tarnab, Peshawar 25000, Pakistan
Sajid Mehmood: College of Ecology and Environment, Hainan University, Haikou 570100, China
Muhammad Imtiaz: Soil and Environmental Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad 38000, Pakistan
Umer Farooq: Department of Plant Breeding and Genetics, Faculty of Agricultural Science s and Technology, Bahauddin Zakariya University Multan, Multan 60800, Pakistan
Muhammad Rashid: Institute of Pure and Applied Biology, Bahauddin Zakariya University Multan, Multan 60800, Pakistan
Allah Ditta: Department of Environmental Sciences, Shaheed Benazir Bhutto University Sheringal, Dir (Upper), Sheringal 18000, Pakistan

Sustainability, 2022, vol. 15, issue 1, 1-13

Abstract: Under the current climate change scenario, water stress is one of the key factors that reduce the production of crops. Gibberellic acid (GA 3 ) is an efficient endogenous plant hormone that shows a vital role in plant growth and development. Production of canola ( Brassica napus L.) and its oil contents are severely affected under drought stress. The present study was conducted to investigate the potential of GA 3 in alleviating drought stress in canola. Three levels of GA 3 (G 0 = 0 mg L −1 , G 1 = 100 mg L −1 , and G 2 = 150 mg L −1 ) as foliar applications were applied under two drought-stress conditions (D 1 for three days of drought stress and D 2 for six days of drought stress) on two canola varieties (Punjab canola and Faisal canola). Irrigation was applied after 3 weeks of germination, while foliar application of GA 3 was done at intervals of 4 and 5 weeks after germination. When comparing the output of all the GA 3 treatments, it was noticed that in G 0 = 0 mg L −1 (control plants), water-stress conditions markedly reduced plant production and seed oil contents but increased protein and linoleic acid. With the application of G 2 = 150 mg L −1 , the maximum values of plant height (90.83 cm), no. of siliqua plant −1 (15.50), seed siliqua −1 (15.55), siliqua length (5.08 cm), relative water contents (77.60%), yield plant −1 (0.46 g), chlorophyll a (0.62), carotenoid contents (39.52), and oleic acid contents (60.20) were recorded under drought stress. Based on these results, it is concluded that the adverse effect of drought stress on different yield parameters of canola could be ameliorated by the exogenous application of GA 3 through foliar application at a dose of 150 mg L –1 . Moreover, the same treatment improves the quality parameters, i.e., the oleic acid contents of the oil, obtained from the canola.

Keywords: canola; drought stress alleviation; gibberellic acid; seed oil; protein contents; yield (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/2071-1050/15/1/78/pdf (application/pdf)
https://www.mdpi.com/2071-1050/15/1/78/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:15:y:2022:i:1:p:78-:d:1010123

Access Statistics for this article

Sustainability is currently edited by Ms. Alexandra Wu

More articles in Sustainability from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().