Journal
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
Volume 145, Issue -, Pages 226-234Publisher
ELSEVIER
DOI: 10.1016/j.ijbiomac.2019.12.155
Keywords
Chitosan; Nanofertilizer; Maize; Source activity; Reserve food
Funding
- Directorate of Research, MPUAT, Udaipur, Rajasthan, India
- Indian Council of Medical Research-Senior Research Fellowship (ICMR-SRF) [ICMR-SRF/2018/30716]
- Department of Biotechnology-Junior Research Fellowship (DBT-JRF) [DBT/2018/MPUAT/1123]
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We, herein, report the effect of chitosan nanofertilizer comprising of copper (Cu) and salicylic acid (SA) on source activity in maize. Seed treatment and foliar application of chitosan nanofertilizer significantly up-regulated the source activity in developing maize plants. Seed treatment with nanofertilizer induced 1.6 folds higher seedling vigour index, 1.7-3.0 folds higher activities of reserve food mobilizing enzymes in seedlings as compared with control. Foliar application of nanofertilizer (0.01-0.16%) statistically significantly increased the activities of antioxidant enzymes (1.06-1.91 folds), reduced malondialdehyde content and enhanced chlorophyll contents (2 folds) in leaves. Application of nanofertilizer remarkably induced sucrose translocation (2.5-3.5 folds) in internodes which gives subtle clue of higher remobilization of nutrients towards growing cob. The elusive bioactivities of nanofertilizer can be attributed to slow release and synergistic effects of Cu and SA. We claim that chitosan nanofertilizer has immense potential to promote source activity in maize for higher crop yield.
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