k -Oligocarrageenan Promoting Growth of Hybrid Maize: Influence of Molecular Weight

-Oligocarrageenan (OC) is an effective biostimulator and a protector against disease infections for plants. However, the effect of OC molecular weight (MW) on plant growth is not fully understood. In this work, OCs with three different MWs (42, 17 and 4 kDa) was prepared by varying the degradation r...

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Published in:Molecules (Basel, Switzerland) Switzerland), 2020-08, Vol.25 (17), p.3825
Main Authors: San, Pham Trung, Khanh, Chau Minh, Khanh, Huynh Hoang Nhu, Khoa, Truong Anh, Hoang, Nguyen, Nhung, Le Thi, Trinh, Nguyen Thi Kieu, Nguyen, Thanh-Danh
Format: Article
Language:English
Subjects:
Acids
Agricultural production
Ascorbic acid
Carrageenan - pharmacology
Cell cycle
Cell division
Corn
Crop growth
Crop yield
Crops
Crops, Agricultural - genetics
Crops, Agricultural - growth & development
Crosses, Genetic
Experiments
Grain
grain yield
hybrid maize (Zea mays L.)
Infrared spectroscopy
Metabolism
Metabolites
Molecular weight
molecule weight
oligocarrageenan
Plant Development - drug effects
Plant diseases
Plant growth
Plant Leaves - genetics
Plant Leaves - growth & development
promoter
Reaction time
Reagents
Zea mays - genetics
Zea mays - growth & development
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Summary:-Oligocarrageenan (OC) is an effective biostimulator and a protector against disease infections for plants. However, the effect of OC molecular weight (MW) on plant growth is not fully understood. In this work, OCs with three different MWs (42, 17 and 4 kDa) was prepared by varying the degradation reaction time using ascorbic acid as a reagent. The product structure was confirmed by Fourier-transform infrared spectroscopy (FTIR) data. The growth promotion for maize ( L.) plants was investigated by foliar spray application of the prepared OCs. Field trials were carried out in two years, 2018 and 2019. The results showed that among treatments, OC with 4 kDa exhibited the best performance in both crop growth and grain yield parameters which indicated increases compared to the control in plant height (6.9-19.9%), length of ears (12.2%), diameter of ears (9.1%), fresh grain weight (17.8%), dry grain weight (20.0%) and grain yield (21.3%). Moreover, low MW OC augmented NP uptake in the plant growth while no effect on K uptake was observed. Therefore, OC with low MWs is potentially promising to apply as a promoter to enhance yield of crops.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules25173825