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Improvement of germination & seedling vigour of maize (Zea mays L.) through different priming methods under salt stress


The International Journal of Biological Research (TIJOBR)

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Zunaira Tahir1*, Amer Habib1, Barira Shoukat Hafiza2, Bismillah Khan2, Samina Imam2, H. Abdul Basit2, M. Wasiq2, H. Farwa Shafaqat2

1Department of Plant Pathology, University of Agriculture, Faisalabad, Pakistan.

2Department of Botany, University of Agriculture, Faisalabad, Pakistan.

*Corresponding author’s email: zunairatahir07@gmail.com
Submitted Accepted Published
Apr 03,2019 Jun 12,2017 Aug 01,2019

2019 / Vol: 2 / Issue: 2


Abstract


The study was designed to evaluate the effect of different seed priming methods on growth and yield of four maize cultivars under salt stress. The present experiment was conducted in completely randomized design (CRD) having three replications. Seeds of maize were subjected to hydropriming for 12 hours while in case of osmo-priming seeds were treated with 0.5% and 1% solution of KNO3, ZnSOand H3BOfor twelve hours, respectively. In control conditions untreated seeds were used. The seed priming significantly increased the germination rate as compared to non-primed seeds. Under salt stress germination rate decreased as compared to non-primed seeds i.e. 28% to 35% for all four cultivars at 100 Mm NaCl. Shoot length and Root length was also significantly increased for all four maize cultivars by all priming methods as compared to the to control treatment. The maximum shoot length (6.22, 5.37, 5.27 and 4.82 cm), root length (15.18, 13.18, 12.06 and 10.74 cm), leaf area (470, 465, 462 and 460) was computed for all four cultivars at 1% of KNO3 treatment while minimum values was calculated at salinity level of 100 Mm NaCl for all cultivars. Similarly shoot fresh and root fresh weight significantly increased among all four maize cultivars treated with osmo-priming and hydro priming methods as compared to control at different salinity levels. Among all four cultivars, the maximum shoot fresh and root fresh weight was calculated for PEARLat 1% of KNO3 priming, followed by 0.5% of KNO3 priming as compared to control, hydro priming, ZnSO4 and H3BO3 respectively. Whereas parameters negatively significantly affected at 75 mM NaCl and 100 mM NaCl levels.

Key words: Maize, seed priming, salt stress


Reference


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