scholarly journals Application of K and Zn Influences the Mineral Accumulation More in Hybrid Than Inbred Maize Cultivars

Plants ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 2206
Author(s):  
Hafiz Muhammad Ali Raza ◽  
Muhammad Amjad Bashir ◽  
Abdur Rehim ◽  
Qurat-Ul-Ain Raza ◽  
Graeme P. Berlyn ◽  
...  
Keyword(s):  
Stability Index ◽  
Dry Weight ◽  
Crop Productivity ◽  
Maize Crop ◽  
Chlorophyll Contents ◽  
Maize Cultivars ◽  
Combined Application ◽  
Relative Water ◽  
Physiological Attributes ◽  
Zinc Levels

Maize (Zea mays L.) is an important crop used for feeding humans and cattle globally. Deficiency of potassium (K) and zinc (Zn) adversely impacts the maize crop productivity and quality. However, the application of these nutrients shows variant responses in different maize cultivars. To understand this perspective, the current study aimed at investigating K and Zn’s optimal concentration in different hybrid and inbred maize cultivars. The treatments were based on three zinc levels (0, 6, and 12 mg Zn kg−1) and K levels (0, 30, and 60 mg kg−1), and their respective combinations. The experiment results showed that combined fertilization approaches of Zn and K (Zn12K60) improved the plant biometric, and physiological attributes of maize crop. The results revealed a significant increase in plant height (45%), fresh weight (70%), and dry weight (45%). Similarly, physiological attributes significantly improved the relative water content (76.4%), membrane stability index (77.9%), chlorophyll contents (170%), and photosynthetic rate (130%) in both inbred and hybrid genotypes. Furthermore, Zn and K (Zn12K60) increased transpiration rate (E), stomatal conductance (Ci), and internal CO2. In conclusion, maize hybrids (Neelam and DK-6142) were observed best compared with inbred (Afghoi and P-1543) cultivars with the combined application of Zn and K (Zn12K60). Thus, these inbred varieties should be preferred for fodder requirement with optimum fertilizer (Zn12K60) application in Zn deficient soils.

scholarly journals Salt-tolerance screening in Limonium sinuatum varieties with different flower colors

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Xiaojing Xu ◽  
Yingli Zhou ◽  
Ping Mi ◽  
Baoshan Wang ◽  
Fang Yuan
Keyword(s):  
Salt Tolerance ◽  
Photosynthetic Rate ◽  
Large Scale ◽  
Soluble Sugars ◽  
Dry Weight ◽  
Salt Gland ◽  
Salt Glands ◽  
Chlorophyll Contents ◽  
Relative Water ◽  
Whole Plants

AbstractLimonium sinuatum, a member of Plumbaginaceae commonly known as sea lavender, is widely used as dried flower. Five L. sinuatum varieties with different flower colors (White, Blue, Pink, Yellow, and Purple) are found in saline regions and are widely cultivated in gardens. In the current study, we evaluated the salt tolerance of these varieties under 250 mmol/L NaCl (salt-tolerance threshold) treatment to identify the optimal variety suitable for planting in saline lands. After the measurement of the fresh weight (FW), dry weight (DW), contents of Na+, K+, Ca2+, Cl−, malondialdehyde (MDA), proline, soluble sugars, hydrogen peroxide (H2O2), relative water content, chlorophyll contents, net photosynthetic rate, and osmotic potential of whole plants, the salt-tolerance ability from strongest to weakest is identified as Pink, Yellow, Purple, White, and Blue. Photosynthetic rate was the most reliable and positive indicator of salt tolerance. The density of salt glands showed the greatest increase in Pink under NaCl treatment, indicating that Pink adapts to high-salt levels by enhancing salt gland formation. These results provide a theoretical basis for the large-scale planting of L. sinuatum in saline soils in the future.

scholarly journals Influence of Water Stress on Growth, Chlorophyll Contents and Solute Accumulation in Three Accessions of Vicia faba L. from Tunisian Arid Region

2021 ◽  
Author(s):  
Hanen Enneb ◽  
Leila Ben Yahya ◽  
Mohamed Ilyas ◽  
Datta Asaram Dhale ◽  
Mohamed Bagues ◽  
...  
Keyword(s):  
Water Stress ◽  
Vicia Faba ◽  
Soluble Sugar ◽  
Field Capacity ◽  
Dry Weight ◽  
Chlorophyll Contents ◽  
Bean Plants ◽  
Relative Water ◽  
Influence Of Water ◽  
Hydric Stress

In this study, we aim to investigate the physiological and biochemical adaptations of Vicia faba plants to moderate irrigation regime (T1) and describe the effects of water stress on their growth performance and chlorophyll contents. For this reason, three Tunisia accessions (ElHamma, Mareth and Medenine) were studied. An experiment was conducted for one month. Faba bean plants were first grown in a greenhouse and then, exposed to water stress, whereby they were irrigated up to the field capacity (FC) of 0% (control, T0) and 50% of the control (moderate stress, T1). The effect of water stress on physiological parameters showed differences in relation to the accessions studied and the water regime. Relative water content (RWC) of ElHamma accession does not seem to be affected by stress as compared with the control regime. Total chlorophyll content decreases, whereas soluble sugar contents increases for all accessions studied. ElHamma has the highest content. About morphological parameters, bean growth varies according to the ascension and treatment. Hydric stress impedes the growth of the root part and caused a significant reduction in the shoot and root Dry Weight (DW) of the T1-stressed beans, compared to the optimal irrigation (T0).

scholarly journals Physiological response of Bajra-Napier Hybrids and Tri-Specific Hybrid to salinity stressPhysiological response of Bajra-Napier Hybrids and Tri-Specific Hybrid to salinity stress

2021 ◽  
Vol 9 (3) ◽  
pp. 337-347
Author(s):  
Seva Nayak Dheeravathu ◽  
Kajal Singh ◽  
Pramod W. Ramteke ◽  
Reetu - ◽  
Nilamani Dikshit ◽  
...  
Keyword(s):  
Salinity Stress ◽  
Stability Index ◽  
Dry Weight ◽  
Salinity Level ◽  
Shoot Dry Weight ◽  
Randomized Design ◽  
Relative Water ◽  
Salinity Levels ◽  
K Concentration ◽  
Specific Hybrid

Physiological responses of 3 Bajra-Napier (Cenchrus spp., syn. Pennisetum spp.) hybrid varieties, viz. BNH-3, BNH-6, BNH-10, and 1 ttri-specific hybrid (TSH) were tested under different gradients of soil salinity, i.e. Control, 4, 6 and 8 dS/m electric conductivity (EC), in a pot trial. The experiment was laid out in a factorial completely randomized design with 3 replications. Shoot dry weight, root dry weight, root:shoot ratio and chlorophyll a, chlorophyll b, total chlorophyll and carotenoid concentrations were reduced with increasing salinity level as compared with Control. However, the concentration of Na+ in leaves increased and K+ concentration decreased with increasing salinity level. Physiological parameters, i.e. relative water content (RWC), membrane stability index (MSI), chlorophyll stability index, carotenoid stability index and K+: Na+ ratio, in leaves tended to be higher in the BNH-3 variety than in other varieties. Shoot dry weight showed highly positive significant correlation with RWC, MSI, K+ concentration and K+:Na+ ratio, while it was negatively correlated with Na+ concentration (P<0.01) All BN hybrid varieties and the tri-specific hybrid studied were susceptible to salinity stress, showing marked reductions in growth as the level of salinity increased above 4 dS/m. However, even at salinity levels producing EC of 8 dS/m these varieties still produced 25‒44% DM yields. There are prospects for improving forage yields from saline soils by planting these hybrids but further breeding studies are warranted to identify germplasm with greater tolerance of saline conditions if these soils are to be utilized effectively to contribute more to supplying forage to support the world’s ruminant population.

scholarly journals Effect of K and Zn Application on Biometric and Physiological Parameters of Different Maize Genotypes

2021 ◽  
Vol 13 (23) ◽  
pp. 13440
Author(s):  
Hafiz Muhammad Ali Raza ◽  
Muhammad Amjad Bashir ◽  
Abdur Rehim ◽  
Qurat-Ul-Ain Raza ◽  
Kashif Ali Khan ◽  
...  
Keyword(s):  
Block Design ◽  
Stability Index ◽  
Research Area ◽  
Fertilization Rate ◽  
Enzyme Activation ◽  
Agricultural Science ◽  
Zn Deficiency ◽  
Chlorophyll Contents ◽  
Combined Application ◽  
Maize Genotypes

Potassium (K) and zinc (Zn) are mineral nutrients required for adequate plant growth, enzyme activation, water retention and photosynthetic activities. However, Pakistani soils are alkaline and have serious problems regarding Zn deficiency. The current study aims at finding the nutrient–nutrient interaction of K and Zn to affect maize plants’ (i) physiological processes and (ii) productivity. For this purpose, a pot experiment was conducted at the research area of the Department of Soil Science, Faculty of Agricultural Science and Technology, Bahauddin Zakariya University, Multan. Two maize genotypes, DK-6142 (hybrid) and Neelam (non-hybrid), were used with three K fertilizer doses, i.e., 0, 60 and 100 kg ha−1 in all possible combinations with three Zn fertilizer doses, i.e., 0, 16 and 24 kg ha−1. The treatments were replicated under a completely randomized block design. The results elucidated that the combined application of K and Zn with K60 + Zn16 treatment significantly increased agronomic, productive, and physiological attributes. It has improved fresh biomass (89%), dry biomass (94%), membrane stability index (142%), relative water content (200%) and chlorophyll contents (191%) as compared to the control. Moreover, the mineral uptake of K and Zn was significantly improved with their maximum fertilization rate in hybrid genotype compared to non-hybrid and CK.

scholarly journals Foliar applications of plant-based titanium dioxide nanoparticles to improve agronomic and physiological attributes of wheat (Triticum aestivum L.) plants under salinity stress

2021 ◽  
Vol 10 (1) ◽  
pp. 246-257
Author(s):  
Nilofar Mustafa ◽  
Naveed Iqbal Raja ◽  
Noshin Ilyas ◽  
Muhammad Ikram ◽  
Zia-ur-Rehman Mashwani ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Salinity Stress ◽  
Titanium Dioxide Nanoparticles ◽  
Dry Weight ◽  
Triticum Aestivum L ◽  
Wheat Varieties ◽  
Toxicological Effect ◽  
Chlorophyll Contents ◽  
Chlorophyll A And B ◽  
Physiological Attributes

Abstract The present study was carried out to investigate the beneficial and toxicological effect of plant-based titanium dioxide nanoparticles (TiO2 NPs) on the morphophysiological attributes of wheat plants under salinity stress. The biogenesis of titanium dioxide nanoparticles was accomplished by using the extract of Buddleja asiatica L. leaves followed by characterization through UV visible spectroscopy, SEM, FTIR, and EDX. NaCl salt was applied in two different concentrations after 21 days of germination followed by foliar applications of various concentrations of TiO2 NPs (20, 40, 60, 80 mg/L) to salinity-tolerant (Faisalabad-08) and salinity-susceptible (NARC-11) wheat varieties after 10–15 days of application of salt stress. Salinity stress showed remarkable decrease in morphophysiological attributes of selected wheat varieties. Magnificent improvement in plant height, dry and fresh weight of plants, shoot and root length, root and shoot fresh and dry weight, number of leaves per plant, RWC, MSI, chlorophyll a and b, and total chlorophyll contents has been observed when 40 mg/L of TiO2 NPs was used. However, the plant morphophysiological parameters decreased gradually at higher concentrations (60 and 80 mg/L) in both selected wheat varieties. Therefore, 40 mg/L concentration of TiO2 NPs was found most preferable to increase the growth agronomic and physiological attributes of selected wheat varieties under salinity.

scholarly journals Evaluating the Contribution of Growth, Physiological, and Ionic Components Towards Salinity and Drought Stress Tolerance in Jatropha curcas

Plants ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 1574
Author(s):  
Muhammad Mohsin Abrar ◽  
Muhammad Saqib ◽  
Ghulam Abbas ◽  
Muhammad Atiq-ur-Rahman ◽  
Adnan Mustafa ◽  
...  
Keyword(s):  
Drought Stress ◽  
Stress Tolerance ◽  
Jatropha Curcas ◽  
Ionic Composition ◽  
Stability Index ◽  
Contributing Factors ◽  
Randomized Design ◽  
Relative Water ◽  
Physiological Attributes ◽  
Ionic Components

Salinity and drought stress, singly or in combination, are major environmental menaces. Jatropha curcas L. is a biodiesel plant that can tolerate long periods of drought. However, the growth performance and stress tolerance based on physical, chemical, and physiological attributes of this plant have not yet been studied. To address this question, J. curcas seedlings were grown in a completely randomized design in plastic pots filled with soil to evaluate the effects of salinity and drought stresses on growth, ionic composition, and physiological attributes. The experiment consisted of six treatments: control (without salinity and drought stress), salinity alone (7.5 dS m−1, 15 dS m−1), drought, and a combination of salinity and drought (7.5 dS m−1+ Drought, 15 dS m−1+Drought). Our results revealed that, compared with the control, both plant height (PH) and stem diameter (SD) were reduced by (83%, 80%, and 77%) and (69%, 56%, and 55%) under salinity and drought combination (15 dS m−1+Drought) after three, six, and nine months, respectively. There was 93% more leaf Na+ found in plants treated with 15 dS m−1+Drought compared with the control. The highest significant average membrane stability index (MSI) and relative water content (RWC) values (81% and 85%, respectively) were found in the control. The MSI and RWC were not influenced by 7.5 dS m−1 and drought treatments and mostly contributed towards stress tolerance. Our findings imply that J. curcas is moderately tolerant to salinity and drought. The Na+ toxicity and disturbance in K+: Na+ ratio were the main contributing factors for limited growth and physiological attributes in this plant.

scholarly journals Morphophysiological changes and reactive oxygen species metabolism in Corchorus olitorius L. under different abiotic stresses

2021 ◽  
Vol 6 (1) ◽  
pp. 549-562
Author(s):  
Khussboo Rahman ◽  
Mira Rahman ◽  
Naznin Ahmed ◽  
Md. Mahabub Alam ◽  
Anisur Rahman ◽  
...  
Keyword(s):  
Drought Stress ◽  
Oxidative Damage ◽  
Abiotic Stresses ◽  
Salt Water ◽  
Dry Weight ◽  
Crop Productivity ◽  
Corchorus Olitorius ◽  
Spad Value ◽  
Affected Plant ◽  
Relative Water

Abstract Abiotic stress has become an alarming issue for plant survival due to the constant changes in the environment. Abiotic stresses such as drought, salt, waterlogging, and heavy metals largely influence plant growth and development that finally reduce crop productivity. The present study was carried out to investigate the responses of jute (Corchorus olitorius cv. O-9897) plant under different abiotic stresses. At 15th days after sowing plants were exposed to different abiotic stresses for various duration. Two doses of NaCl (200 and 400 mM) were applied to impose salt stress, while two doses of CdCl2 (2 and 4 mM) were applied for cadmium (Cd) stress. Waterlogging stress was applied for 5 and 15 days. Whereas drought stress was imposed on plants for 10 and 15 days. Leaf relative water content, SPAD value, plant height, above ground fresh and dry weight, leaf area, and stem diameter decreased upon exposure to salt, water deficit, Cd, and waterlogging stresses. These abiotic stresses resulted in oxidative damage which was evident by the increased levels of lipid peroxidation, H2O2, and electrolyte leakage (EL) together with altered antioxidant enzymes activities and glyoxalase system which are crucial for plants to fight against oxidative damage. Both duration of waterlogging and drought stress drastically affected plant morphophysiology, whereas C. olitorius could tolerate moderate level of salt (200 mM NaCl) and Cd (2 mM CdCl2). So the present study reveals that abiotic stresses cause substantial damages to the morphophysiology and oxidative stress tolerance of C. olitorius where the higher doses of NaCl and CdCl2 as well as the increased duration of waterlogging and drought resulted in more deleterious effect.

scholarly journals Assessing the potential of exogenous caffeic acid application in boosting wheat (Triticum aestivum L.) crop productivity under salt stress

PLoS ONE ◽  
2021 ◽  
Vol 16 (11) ◽  
pp. e0259222
Author(s):  
Hassan Mehmood ◽  
Ghulam Hassan Abbasi ◽  
Moazzam Jamil ◽  
Zaffar Malik ◽  
Muhammad Ali ◽  
...  
Keyword(s):  
Antioxidant Enzymes ◽  
Caffeic Acid ◽  
Sandy Loam ◽  
Stability Index ◽  
Crop Productivity ◽  
Dry Matter Accumulation ◽  
Wheat Genotype ◽  
Yield Attributes ◽  
Wheat Genotypes ◽  
Chlorophyll Contents

Caffeic acid (CA) is known as an antioxidant to scavenge reactive oxygen species (ROS), but the underlying mechanism of mediation of plant salt tolerance against various abiotic stresses by caffeic acid is only partially understood. A field experiment (120 days duration) was conducted to investigate the protective role of caffeic acid under a high saline medium (EC 8.7 dS m-1 and textural class: sandy loam) in two wheat genotypes (FSD -08 and Zincol-16). Two levels of caffeic acid (50 μM and 100 μM) were applied exogenously in combination with the salinity stress and results revealed that salt alleviation is more prominent when caffeic acid was applied at the rate of 100 μM. Under saline conditions, wheat genotypes show poor fresh and dry matter accumulation, chlorophyll contents, relative water contents (RWC), membrane stability index (MSI) and activities of antioxidant enzymes and increased uptake of Na+ ions. However, wheat genotype FSD-08 eminently responded to caffeic acid application as compared to wheat genotype Zincol-16 as demonstrated by higher growth indicators, RWC, MSI, activities of antioxidant enzymes, accumulation of mineral ions in grain along with yield attributes. In addition, caffeic acid also mitigated salt-induced oxidative stress malondialdehyde (MDA) and hydrogen peroxide (H2O2) contents as well as significantly reduced Na+ uptake. It can be concluded that caffeic acid-induced salinity tolerance in wheat is attributed to improved plant water relations, K+ uptake, yield contents and activities of antioxidant stress enzymes.

Comparative Effect of Groundnut (Arachis hypogea l.) Genotypes on Yield and N Fixation in Sudan and Northern Guinea Savannahs of Nigeria

2019 ◽  
pp. 61-67
Keyword(s):  
Agricultural Research ◽  
Cropping Systems ◽  
Block Design ◽  
Dry Weight ◽  
Field Trials ◽  
Yield Potential ◽  
N Fixation ◽  
Maize Crop ◽  
Significant Interaction Effect ◽  
Pod Yield

Recognition of high yielding and nitrogen (N) fixing groundnut genotypes and desegregating them in the cereal-based cropping systems common in savannah regions will enhance food security and reduce the need for high N fertilizers hence, minimize the high cost and associated environmental consequences. Field trials were conducted during the 2015 growing season at the Research Farms of Bayero University Kano (BUK) and Institute for Agricultural Research (IAR), Ahmadu Bello University, Samaru-Zaria to assess the yield potential and Biolog- ical N fixation in 15 groundnut genotypes (ICG 4729, ICGV-IS 07823, ICGV-IS 07893, ICGV-IS 07908, ICGV- SM 07539, ICGV- SM 07599, ICGV-IS 09926, ICGV-IS 09932, ICGV-IS 09992, ICGV-IS 09994, SAMNUT-21, SAMNUT-22, SAMNUT-25, KAMPALA and KWANKWAS). The groundnut genotypes and reference Maize crop (SAMMAZ 29) were planted in a randomized complete block design in three replications. N difference method was used to estimate the amount of N fixed. The parameters determined were the number of nodules, nod- ule dry weight, shoot and root dry weights, pod, and haulm yield as well as N fixation. The nodule dry weight, BNF, haulm, and pod yield were statistically significant (P<0.01) concerning genotype and location. Similarly, their interac- tion effect was also highly significant. ICGV-IS 09926 recorded the highest nod- ule dry weight of 2.07mg /plant across the locations while ICGV-IS 09932 had the highest BNF value of 140.27Kg/ha. Additionally, KAMPALA had the high- est haulm yield, while ICGV-IS 07893 had the highest pod yield across the loca- tions with a significant interaction effect. The result shows that ICGV-IS 07893 and ICGV-IS 09932, as well as ICGV-IS 09994 and SAMNUT – 22, were the best genotypes concerning BNF, haulm and pod yield in the Northern Guinea and Sudan Savannahs of Nigeria respectively with the potential for a corresponding beneficial effect.

scholarly journals Effects of exogenous silicon on maize seed germination and seedling growth

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yankun Sun ◽  
Jiaqi Xu ◽  
Xiangyang Miao ◽  
Xuesong Lin ◽  
Wanzhen Liu ◽  
...  
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Crop Yields ◽  
Dry Weight ◽  
Membrane System ◽  
Water Soluble ◽  
Current Status ◽  
Antioxidant Enzyme Activities ◽  
Chlorophyll Contents ◽  
Antioxidant Defence System

AbstractAs the global population continues to increase, global food production needs to double by 2050 to meet the demand. Given the current status of the not expansion of cultivated land area, agronomic seedlings are complete, well-formed and strong, which is the basis of high crop yields. The aim of this experiment was to study the effects of seed germination and seedling growth in response to silicon (from water-soluble Si fertilizer). The effects of Si on the maize germination, seedling growth, chlorophyll contents, osmoprotectant contents, antioxidant enzyme activities, non-enzymatic antioxidant contents and stomatal characteristics were studied by soaking Xianyu 335 in solutions of different concentrations of Si (0, 5, 10, 15, 20, and 25 g·L−1). In this study, Si treatments significantly increased the seed germination and per-plant dry weight of seedlings (P < 0.05), and the optimal concentration was 15 g·L−1. As a result of the Si treatment of the seeds, the chlorophyll content, osmotic material accumulation and antioxidant defence system activity increased, reducing membrane system damage, reactive oxygen species contents, and stomatal aperture. The results suggested that 15 g·L−1 Si significantly stimulated seed germination and promoted the growth of maize seedlings, laying a solid foundation for subsequent maize growth.

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