Humic Acid and Jasmonic Acid Improves the Growth and Antioxidant Defense System in Salt Stressed - Forage Sorghum Plants

2021 ◽  
Author(s):  
Adam Yousif Adam Ali ◽  
Muhi Eldeen Hussien Ibrahim ◽  
Guisheng Zhou ◽  
Aboagla Mohammed Ibrahim Elsiddig ◽  
Xiurong Jiao ◽  
...  
Keyword(s):  
Growth Rate ◽  
Humic Acid ◽  
Jasmonic Acid ◽  
Salinity Stress ◽  
Soluble Protein ◽  
Soluble Protein Content ◽  
Area Index ◽  
Relative Growth ◽  
Forage Sorghum ◽  
Dry Soil

Abstract Salinity is one of the primary abiotic stresses that cause several negative physiological and biochemical changes due to the oxidative stress caused by the generation of ROS. The effect of foliar application of jasmonic acid (JA) and humic acid (HA) as a fertilizer on growth and biochemical attributes exposed to salinity stress was investigated. Soil treated with NaCl at levels of 0 (S0), 2 (S1), and 4 g NaCl kg-1 dry soil (S2) and fertilized with 0 (HA0), 3 (HA1), and 6 g HA kg-1 dry soil (HA2). The plant spray with three JA levels (0, 5, and 10mM JA). Under salinity, JA and HA significantly improved all parameters tested. Salinity stress increased carotenoid, soluble protein content, SOD and MDA. In contrast, salinity stress reduced plant height, leaf area index, relative growth rate, proline content, POD, CAT, and APX. Under S2, HA2 rate increased plant high (9.69%), relative growth rate (70.79%) and CAT (45.47). While, HA1 increased leaf area index (12.45%), chlorophyll content (22.32%), carotenoid contents (38.05%), SOD (20.93), MDA (17.95%), POD (24.64%) and APX (21.67%). At S2, the highest plant height, chlorophyll content, soluble protein content and APX value recorded at 5mMJA, while, the highest value of leaf are index, carotenoid contents, proline, MDA, POD and CAT was achieved at 10mMJA. This study revealed that the level of 10 mM JA and HA1 had a positive effect on forage sorghum plants physiological responses. Furthermore, the results showed that jasmonic acid and humic acid successfully mitigated salinity stress's adverse effects.

Varietal differences in growth characteristics in sugar cane

1987 ◽  
Vol 108 (1) ◽  
pp. 245-247 ◽  
Author(s):  
S. Singh ◽  
P. N. Gururaja Rao
Keyword(s):  
Growth Rate ◽  
Sugar Cane ◽  
Growth Characteristics ◽  
Net Assimilation Rate ◽  
Assimilation Rate ◽  
Area Index ◽  
Relative Growth ◽  
Varietal Differences ◽  
Net Assimilation ◽  
High Yielding Varieties

In sugar cane, investigations made earlier (Singh & Gururaja Rao, 1985) have shown that high-yielding varieties have higher net assimilation rate than low-yielding types. Similarly, differences in progeny means for relative growth rate and net assimilation rate have been reported by George (1965). In other crops also, varietal differences in leaf area index and net assimilation rate have been reported (Watson, 1947). It appears that in this crop, limited attempts have been made to study all the growth characteristics. This paper describes the differences in most of the growth characteristics in six sugar-cane varieties.

scholarly journals Factors Affecting Relative Growth Rate of Lettuce and Spinach in Hydroponics in a Greenhouse

HortScience ◽  
2017 ◽  
Vol 52 (12) ◽  
pp. 1742-1747
Author(s):  
Martin P.N. Gent
Keyword(s):  
Growth Rate ◽  
Linear Regression ◽  
Multiple Linear Regression ◽  
Relative Growth Rate ◽  
Relative Increase ◽  
Solution Temperature ◽  
Area Index ◽  
Relative Growth ◽  
Factors Affecting ◽  
Daily Light Integral

Relative growth rate (RGR), the relative increase in weight per day, can analyze the effect of environment and nutrition on growth. I examined which of the parameters responding to plant growth scaled according to RGR for lettuce and spinach grown in heated greenhouses in hydroponics with control of the nutrient solution. The experiments for lettuce in 2006–08 included all times of year, high vs. low temperature, and effect of withdrawal of nitrogen. There were four parameters that were significant in multiple linear regression vs. RGR; irradiance divided by leaf area index if it was greater than one, or normalized daily light integral (NDLI), solution temperature, electrical conductivity (EC), and logarithm solution nitrate when it was between 3 and 55 mg·L−1 N. NDLI had the most significant coefficient, but the other parameters had regression coefficients more than three times se. For experiments on spinach in 2009–10, all the parameters mentioned previously were significant in multiple linear regression vs. RGR, except EC. The coefficient for NDLI in spinach was about half the value in lettuce. The coefficients for solution temperature and low nitrate were two and three times that in lettuce. In a third set of experiments on lettuce in 1996–98, solution temperature was the only significant parameter among those mentioned previously. The coefficient for solution temperature was similar to that for regression of lettuce in 2006–08.

scholarly journals Growth and Yield Response of Groundnut (Arachis hypogaea L.) Varieties to Plant Density

2020 ◽  
Vol 8 (3) ◽  
pp. 633
Author(s):  
Gilbert Nwogboduhu Nwokwu ◽  
Ifeoma Lilian Agbedo Odoh ◽  
Egwu Patricia Ngozi
Keyword(s):  
Growth Rate ◽  
Relative Growth Rate ◽  
Plant Density ◽  
Total Yield ◽  
Growth And Yield ◽  
Area Index ◽  
Relative Growth ◽  
Yield Parameters ◽  
Number Of Seeds ◽  
Number Of Branches

A field experiment was conducted at the research field of Faculty of Agriculture and Natural Resources Management, Ebonyi State University Abakaliki during the 2018 farming season to determine the effect of plant density on growth, yield and yield components of groundnut varieties. The experiment was conducted in a 3x4 factorial laid out in a randomized complete block design (RCBD). The treatments comprised three groundnut varieties (SAMNUT 24, 25 and 26) and four planting densities (40,000, 80,000, 120,000, and 160,000 plants ha-1). Each treatment was replicated four times. The parameters measured were plant height, number of leaves per plant, number of branches per plant, days to 50% flowering, shoot dry weight, leaf area index, crop growth rate, relative growth rate, net assimilation rate, number of pod per plant, pod weight per plant, hundred seed weight, number of seeds per plant, shelling percentage and total yield per hectare. The results showed that groundnut varieties were significant in all growth and yield parameters assessed except number of days to 50% flowering, Relative Growth Rate, number of pod per plant, and hundred seed weight while planting density recorded significant effect on all the growth and yield parameters. There were also significant interaction effects of varieties and plant density on plant height, number of branches per plant, leaf area index, relative growth rate, pod weight per plant, number of seeds per plant, and total yield per hectare. This result indicated that SAMNUT 26 and plant density of 160,000 plants ha-1 recorded the highest yield of groundnut and can be recommended for the farmers in the study area.

scholarly journals Plant Growth Analysis of Jack Been (Canavalia ensiformis L.) at Different Spacing to Determine the Application Time of Cutback Technology

2019 ◽  
Vol 4 (1) ◽  
pp. 1-7
Author(s):  
N. Nurmuliana ◽  
Muh. Akhsan Akib
Keyword(s):  
Growth Rate ◽  
Leaf Area ◽  
Growth Analysis ◽  
Assimilation Rate ◽  
Area Index ◽  
Relative Growth ◽  
Jack Bean ◽  
Canavalia Ensiformis ◽  
Bean Plants ◽  
Net Assimilation

AbstractThe growth of jack bean (Canavalia ensiformis L) is affected by genetic and environmental factors.  One of the environmental factors involved is growing space. Growing space related to each plant of areas occupied is stated by the distance between plants. A Research has been conducted as long three months in dry season with average daily temperature of 25 to 31OC on altitude of 25 to 500 meter, to determine the timing of the application of cutback technology based on an analysis of growth of jack bean plants (Canavalia ensiformis L) in different growth spaces.  The research was conducted in the trial form using a randomized block design. Variables of plants growth analysis observed is leaf area index (LAI), leaf area is computed by gravimetric method; net assimilation rate (NAR), and relative growth rate (RGR) is determined based on the dry weight of plants; in all three rooms grew, namely 75 cm x 100 cm (control), 75 cm × 75 cm and 75 cm × 50 cm, each repeated three times. The result shows that the trend of leaf area index increased at net assimilation rate (g-1.cm-2.week-1) and relative growth rate (g-1.g-1.minggu-1) decreasing at the time the plant to the age 8 weeks after planting.  The best time for the application of reduction technology to jack bean plants (Canavalia ensiformis L) in all tested growing spaces, is recommended when plants are between 7 and 8 weeks after planting

scholarly journals EFFECT OF SEEDS SOAKING AND VEGETATIVE PARTS NUTRITION WITH ACIDS OF ASCORBIC, CITRIC AND HUMIC ON MAIZE GROWTH

2021 ◽  
Vol 52 (5) ◽  
pp. 1207-1218
Author(s):  
J. J. Kadhim ◽  
J. H. Hamza
Keyword(s):  
Growth Rate ◽  
Humic Acid ◽  
Dry Matter ◽  
Block Design ◽  
Crop Growth ◽  
Control Treatment ◽  
Distilled Water ◽  
Area Index ◽  
Crop Growth Rate ◽  
Dry Matter Weight

A field experiment was carried out during two spring seasons in 2019 and 2020. This study was aimed to increase dry matter weight and crop growth rate of maize. First factor in main plots was nutrition vegetative parts with ascorbic and citric (100 mg l-1) for both of them and humic (1 ml l-1), in addition to the control treatment (spraying of vegetative parts with distilled water only). Second factor in sub-plots was seeds soaking with same acids above, as well as the control treatment (soaking the seeds with distilled water only). Randomize complete block design in split plot arrangement was used with three replications. The results showed a significant superiority of seeds soaking in humic acid for traits of number of days from planting to 75% anthesis  and silking (66.4 and 66.3 day) and (72.3 and 72.3 day), plant height (194.0 and 230.8 cm), leaves area plant-1 (6969.5 and 6570.2 cm2), leaf area index (3.71 and 3.50), dry matter weight (11.6 and 12.2 ton ha-1), crop growth rate (3.0 and 3.2 g cm-2 day-1) and chlorophyll leaf content (60.2 and 69.5 SPAD) for both seasons, respectively. Effect of vegetative parts nutrition and interaction effect of both studied factors was non-significant for most traits. It can be concluded that seeds soaking in humic acid improved growth traits. It can be recommended to soak seeds of maize before planting in humic acid at concentration of 1 ml l-1.

Effect of Seed Invigouration Treatments on Physiological Parameters and Nodulation of Grain Cowpea [Vigna unguiculata (L.) Walp]

2019 ◽  
Author(s):  
Anju B. Raj ◽  
Sheeja K. Raj
Keyword(s):  
Growth Rate ◽  
Trichoderma Viride ◽  
Dry Weight ◽  
Seed Priming ◽  
Physiological Parameters ◽  
Research Station ◽  
Area Index ◽  
Relative Growth ◽  
Crop Growth Rate ◽  
Cowpea Seed

The experiment was conducted at Coconut Research Station, Balaramapuram with an objective to assess the effect of seed invigouration with ZnSO4 and borax alone and along with Trichoderma viride on physiological parameters and nodulation of grain cowpea. Seed invigouration treatments had significant effect on physiological parameters as well as nodulation parameters in grain cowpea. Leaf area index and total chlorophyll content were found to be higher in seeds primed in ZnSO4 0.025 and 0.05 per cent for 4h at both 30 and 60 days after sowing (DAS). From 30 to 60 DAS, crop growth rate (CGR) and relative growth rate (RGR) were the highest in seeds pelleted with borax 50 mg kg-1 seed and from 60 DAS to harvest, seeds primed in ZnSO4 0.05 per cent for 4h registered the highest CGR and RGR. Total number of nodules and effective nodules per plant were found to be higher in seeds pelleted with borax 50 and 100 mg kg-1 seed. However, the nodule fresh and dry weight were the highest in seeds primed in ZnSO4 0.05 per cent for 4h. Hence it can be concluded that compared to seed pelleting with borax, seed priming with ZnSO4 was found better for nodulation as well as better expression of physiological parameters in grain cowpea.

scholarly journals Physiological Attributes of Transplant Aman Rice (Cv. Brri Dhan52) as Affected by Tiller Seedlings and Urea Super Granules

2014 ◽  
Vol 24 (1-2) ◽  
pp. 17-27
Author(s):  
SK Paul ◽  
KS Rahman ◽  
MAR Sarkar
Keyword(s):  
Growth Rate ◽  
Block Design ◽  
Assimilation Rate ◽  
Area Index ◽  
Relative Growth ◽  
Crop Growth Rate ◽  
Randomized Complete Block Design ◽  
Physiological Attributes ◽  
Net Assimilation ◽  
Effect Of Age

The experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh, Bangladesh to investigate the effect of age of tiller seedlings, number of tiller seedlings hill-1 and application of urea super granules (USG) on some physiological attributes of transplant Aman rice cv. BRRI dhan52. The experiment consisted of two ages of tiller seedlings viz. 25- and 35-day old, three levels of tiller seedlings hill-1 viz.1, 3 and 5 seedlings hill-1 and three USG levels viz. 0, 1.8g and 2.7g USG per four hills in every alternate row. The experiment was laid out in a randomized complete block design with three replications. The effect of age of tiller seedlings, number of tiller seedlings hill-1 and USG application were significant on crop growth rate (CGR), relative growth rate (RGR), net assimilation rate (NAR) and leaf area index (LAI). The highest CGR and RGR were found by transplanting 35-day old tiller seedlings during the period at 15-30 and 60-75 DAT when 5 tiller seedlings hill-1 were transplanted. The highest NAR was observed at 60-75 DAT with transplanting 5 tiller seedlings hill-1 and the lowest one was recorded at 30-45 DAT. The highest LAI was found at 35-day old tiller seedlings during the period at 60 and 75 DAT when 5 tiller seedlings hill-1 were transplanted. CGR and RGR were found highest by applying 1.8 g USG at 45-60 and 60-75 DAT while NAR was the highest with application of 2.7g USG at 60-75 DAT and lowest one was found in control (0 g USG) at 45-60 and 60-75 DAT. The highest LAI was found by applying 1.8g USG at 15, 30, 45 and 60 DAT and the lowest one was found at 60 DAT in control and at 15, 30 and 45 DAT when 2.7g USG was applied. The highest LAI and CGR were found in older tiller seedlings (35- day old) by transplanting five tiller seedlings hill-1 fertilized with 1.8g USG whereas the highest RGR and NAR were obtained in younger tiller seedlings (25-day old) by transplanting single tiller seedling hill-1 fertilized with 1.8g USG per four hills of every alternate row.DOI: http://dx.doi.org/10.3329/pa.v24i1-2.19094 Progress. Agric. 24(1&2): 17 - 27, 2013

scholarly journals Growth analysis of tomato for industrial processing as a function of nitrogen doses

2020 ◽  
pp. 1348-1354
Author(s):  
Leonardo Correia Costa ◽  
Arthur Bernardes Cecílio Filho ◽  
Rodolfo Gustavo Teixeira Ribas ◽  
Alexson Filgueiras Dutra ◽  
Antonio Márcio Souza Rocha ◽  
...  
Keyword(s):  
Growth Rate ◽  
Leaf Area ◽  
Dry Mass ◽  
Mass Ratio ◽  
Area Index ◽  
Relative Growth ◽  
Tomato Plants ◽  
Industrial Processing ◽  
Leaf Dry Mass ◽  
Absolute Growth

Nitrogen (N) is considered to be the nutrient that most affects plant growth. Understanding this mechanism helps in crop management and planning. This study analyzes the growth of tomato plants (Heinz 9553) for industrial purposes as a function of N doses (0, 60, 120 and 180 kg ha-1). The experiment was carried out from April to August 2015, in Barretos, São Paulo State, Brazil. The experimental design was a randomized blocks, in plots subdivided in time, with three replicates. Growth assays were performed at 14, 28, 42, 56, 70, 84, 96, 112 and 126 days after transplanting (DAT). Fertilization with 180 kg ha-1 N provided greater leaf area, leaf dry mass, shoot dry mass (leaves + stems), fruit dry mass, total dry mass, leaf area index, leaf area ratio and leaf mass ratio at the end of the cycle. The lowest relative growth rate and specific leaf area were verified with 180 kg ha-1. For all N doses, the absolute growth rate was small up to 56 DAT and, subsequently, N doses promoted distinct increases in the index.

Sign in / Sign up

Export Citation Format

Share Document