Open AccessJournal Article
SILICON INDUCED IMPROVEMENT IN MORPHO-PHYSIOLOGICAL TRAITS OF MAIZE (Zea Mays L.) UNDER WATER DEFICIT
TLDR
Silicon application to drought stressed maize plants was better to improve the growth and dry matter could be attributed to improved osmotic adjustment, photosynthetic rate and lowered transpiration.Abstract:
Current water scarcity is an emerging issue in semi-arid regions like Pakistan and cause of deterioration in productivity of crops to reduce crop yield all over the world. Silicon is known to be better against the deleterious effects of drought on plant growth and development. A pot study was conducted to evaluate the effect of Si nutrition (0, 50, 100 and 150 mg/kg) on the growth of a relatively drought tolerant (P-33H25) and sensitive (FH-810) maize hybrids. Two levels of soil water content were used viz. 100 and 60% of field capacity. Water deficit condition in soil significantly reduced morphological and physiological attributes of maize plants. Silicon application significantly improved the plant height, leaf area per plant, primary root length, dry matter of shoot and roots and plant dry matter, water relation and gas exchange characteristics of both maize cultivars under water deficit condition. Poor growth of drought stressed plants was significantly improved with Si application. The silicon fertilized (100 mg/kg) drought stressed plants of hybrid P-33H25 produced maximum (21.68% more) plant dry matter as compared to plants that were not provided with silicon nutrition. Nonetheless, silicon application (150 mg/kg) resulted in maximum increase (26.03%) in plant dry weight of hybrid FH-810 plants that were grown under limited moisture supply i.e., 60% FC. In conclusion silicon application to drought stressed maize plants was better to improve the growth and dry matter could be attributed to improved osmotic adjustment, photosynthetic rate and lowered transpiration.read more
Citations
More filters
Journal ArticleDOI
Mechanisms of silicon-mediated alleviation of drought and salt stress in plants: a review.
Muhammad Rizwan,Shafaqat Ali,Muhammad Ibrahim,Mujahid Farid,Muhammad Adrees,Saima Aslam Bharwana,Muhammad Zia-ur-Rehman,Muhammad Farooq Qayyum,Farhat Abbas +8 more
TL;DR: The potential for improving plant resistance to drought and salt stress by Si application is highlighted and a theoretical basis for application of Si in saline soils and arid and semiarid regions worldwide is provided.
Journal ArticleDOI
Role of silicon in plant stress tolerance: opportunities to achieve a sustainable cropping system.
TL;DR: In the present review, Si-transporters identified in different species, their evolution and the Si-uptake mechanism have been addressed, and the role of Si in biotic and abiotic stress tolerance has been discussed.
Journal ArticleDOI
Can interaction between silicon and plant growth promoting rhizobacteria benefit in alleviating abiotic and biotic stresses in crop plants
TL;DR: In this article, the authors compare and contrast the mechanisms, as far as they are known, through which Si and rhizobacteria can alleviate abiotic and biotic stresses in plants.
Journal ArticleDOI
How Does Silicon Mediate Plant Water Uptake and Loss Under Water Deficiency
TL;DR: A growing number of studies support the conclusion that Si application improves plant water status by increasing root water uptake, rather than by decreasing their water loss under conditions of water deficiency, and the underlying mechanisms of the Si on improving plant water uptake under water deficiency conditions are discussed.
Journal ArticleDOI
Characteristics of Leaf Stomata and Their Relationship with Photosynthesis in Saccharum officinarum Under Drought and Silicon Application.
Krishan K. Verma,Xiu-Peng Song,Yuan Zeng,Dong-Mei Li,Dao-Jun Guo,Vishnu D. Rajput,Gan-Lin Chen,Anatoly Barakhov,Tatiana Minkina,Yang-Rui Li +9 more
TL;DR: This study suggests that the application of Si may be used to increase the stress tolerance of sugarcane plants and showed the remarkable effects on stomata ultrastructure.
References
More filters
Book
Principles and Procedures of Statistics: A Biometrical Approach
TL;DR: Observations probability sampling from a normal distribution comparisons involving two sample means principles of experimental design analysis of variance.
Journal ArticleDOI
Roles of glycine betaine and proline in improving plant abiotic stress resistance
Muhammad Ashraf,Majid R. Foolad +1 more
TL;DR: In this review article, numerous examples of successful application of these compounds to improve plant stress tolerance are presented and a better understanding of the mechanisms of action of exogenously applied GB and proline is expected to aid their effective utilization in crop production in stress environments.
Journal Article
Drought stress in plants: A review on morphological characteristics and pigments composition
Cheruth Abdul Jaleel,P. Manivannan,Abdul Wahid,Muhammad Farooq,H.J. Al-Juburi,Ramamurthy Somasundaram,Rajaram Panneerselvam +6 more
TL;DR: Drought induced changes in morphological, physiological and pigments composition in higher plants are described, which results in declined light harvesting and generation of reducing powers, which are a source of energy for dark reactions of photosynthesis.
Journal ArticleDOI
Mechanisms of silicon-mediated alleviation of abiotic stresses in higher plants: a review.
TL;DR: The key mechanisms of Si-mediated alleviation of abiotic stresses in higher plants include: stimulation of antioxidant systems in plants, complexation or co-precipitation of toxic metal ions with Si, immobilization of toxicMetal ions in growth media, uptake processes, and compartmentation of metal ions within plants.