Plant Productions

Investigating the phenological stages and soybean yield under the influence of seaweed extract and initial seed quality

safiye arab; mehdi baradaran firouzabadi; ahmad gholami; mostafa haydari

Volume 45, Issue 4 , February 2023, , Pages 533-548

https://doi.org/10.22055/ppd.2023.41967.2059

Abstract

Introduction Soybean seeds are sensitive to storage due to their high oil content and they aged quickly. Aging of seeds leads to a decrease in the percentage and speed of germination ... Read More Introduction Soybean seeds are sensitive to storage due to their high oil content and they aged quickly. Aging of seeds leads to a decrease in the percentage and speed of germination and ultimately to a decrease in seed yield. Although the aging rate can be reduced with proper storage methods, the application of some treatments on the aged seeds or spraying some substances on the plants obtained from these seeds can be effective in improving the seed yield. The use of anti-aging substances such as seaweed extract in plants can act as antioxidants and reduce the effects of aging. Materials and Methods In order to evaluate the phenological stages and yield of soybean, an experiment was carried out in the research farm of Shahrood University of Technology during 2019 and 2020 in three replications. The treatments include the initial seed quality in two levels (normal seeds and aged seeds) and seaweed extract (Ascophyllum nodosum) in four levels (control, priming, foliar spraying and combined application of priming and foliar spraying with a concentration of 0.3%). The experiment was carried out as a factorial in the form of a basic design of randomized complete blocks. Results and Discussion In this research, applying accelerated aging caused a significant increase in phenological traits in soybean plants. The use of seaweed extract as a priming and the combined use of priming and foliar spraying could increase the rate of occurrence of phenological traits to a significant level. The seed yield in plants obtained from aged seeds was 32.69% less than that of control plants. The use of seaweed extract as priming, foliar spraying and the combined use of priming and foliar spraying increase the seed yield by 43.54, 15.69 and 87.85 percent, respectively. Aging caused a significant decrease of 23.50 and 25.33 percent of final emergence percentage. Pretreatment of normal and aged seeds with seaweed extract in the first year increased this trait by 16.33 and 7.33% compared to the absence of seaweed extract. In the second year of the experiment, the application of seaweed extract resulted in a 12.67% increase in seedling growth under normal conditions, and an 8.33% increase was recorded with the application of seaweed extract under aging conditions. Conclusion In this study, the application of seaweed extract as seed priming better than foliar spraying. It is possible to recommend priming and the combination of priming and foliar spraying with seaweed extract to accelerate the occurrence of phenological traits in soybeans. The combined use of priming and foliar spraying of seaweed extract is recommended to improve the performance of soybeans in normal and aged conditions.

Effect of Seed Treatment on Physiological Traits of Two Safflower Cultivars under Defoliation

Mina Pedram; Ali Hatami; Mohammad Reza Moradi Telavat; Zahra Tahmasebi

Volume 43, Issue 4 , December 2021, , Pages 507-516

https://doi.org/10.22055/ppd.2020.31631.1845

Abstract

ABSTRACT Introduction:To evaluate the effects of priming and defoliation on some physiological traits of two safflower cultivars, a factorial experiment was conducted as a randomized ... Read More

Effect of Pre-treatment and Seed Size on Quantitative and Qualitative Characteristics of Two Onion (Allium cepa L.) Genotypes

M. I.; M. T.; j. j.; B. P.

Volume 39, Issue 4 , March 2017, , Pages 15-30

https://doi.org/10.22055/ppd.2017.12064

Abstract

Background and Objectives Seed priming is a type of pre-sowing seed treatment known to improve seed performance by increasing seed germination rate and uniformity. Another factor which ... Read More Background and Objectives Seed priming is a type of pre-sowing seed treatment known to improve seed performance by increasing seed germination rate and uniformity. Another factor which could be helpful for rapid and uniform germination and emergence is seed size. Seed size is a component of seed quality which has an impact on the performance of crop. The main objective of this work was to study the effect of priming and seed size on quantitative and qualitative characteristics of two onion genotypes. Materials and methods In order to evaluate the effect of priming and seed size on quantitative and qualitative characteristics of onion genotypes a factorial field experiment based on a randomized complete block design with three replications was conducted in 2012 and 2013 cropping season at Agriculture and Natural Resources Research Center of East Azarbayjan, Iran. The experimental treatments included priming (at four levels: hydro priming, osmopriming (in 2% KNO3), priming with folammin amino acid (in 2%) and control (without priming), seed size (at three levels: small, medium and large) and genotype (at two levels: Red Azarshahr and Zargan). Quantitative characteristics included bulb fresh and dry yield, bulb, leave fresh and dry weight and qualitative characteristics included percentages of soluble solids and dry matter, bulb pH, pyruvic acid content, bulb and Leave ash of onion. Results Analysis of variance for the measured traits indicated that all characteristics significantly were affected by priming and seed size. Results showed that seed priming and seed size improved quantitative and qualitative characteristics of onions. The highest bulb fresh and dry yield, total soluble solids and dry matter, were obtained from plant that primed with folammin amino acid 58.17, 7.27 (tha-1), 12.54, 13.67 percent, respectively, and the lowest were achieved from control plants. Also, mean comparison indicated that the higher values of bulb fresh and dry yield, total soluble solids and dry matter were obtained from large seed size 58.99, 7.37 (tha-1), 11.14, 12.45 percent, respectively and the lower values were found to belong to small seed size. Genotypes mean comparison showed that the higher values of bulb fresh and dry yield, total soluble solids and dry matter were obtained from Red Azarshahr cultivar 53.46, 6.68 (tha-1), 12.62, 11.81 percent, respectively. Discussion According to the results mentioned above, seed priming treatments improved quantitative and qualitative characteristics as compared to the unprimed. Among the treatments, seed priming with folammin amino acid 2 % was more effective than the potassium nitrite 2 % and hydropriming. Large seed size significantly increased the quantitative and qualitative characteristics. Accordingly, the importance of seed priming and seed grading was obvious in this study, so seed priming with folammin amino acid 2% and large seed size should be used for onion planting in order to improve quantitative and qualitative characteristics of onion. Therefore priming with folammin amino acid 2 % and large seed are recommended for onion planting for the places with the same environmental conditions.

Priming effect on dry matter yield and two hybrid maize qualitative characteristics with summer cultivation after wheat harvesting in the Mazadaran region

R R; A M; M R

Volume 36, Issue 4 , March 2014, , Pages 1-13

Abstract

This research explored the priming effect on dry matter yield and two hybrid maize qualitative characteristics (S.C.640 and S.C.704). This Study was carried out with a factorial experiment ... Read More

Articles in Press

Current Issue

Volume 46 (2023)

Volume 45 (2022)

Volume 44 (2021)

Volume 43 (2020)

Volume 42 (2019)

Volume 41 (2018)

Volume 40 (2017)

Volume 39 (2016)

Volume 38 (2015)

Volume 37 (2014)

Volume 36 (2013)

Volume 35 (2012)

Volume 34 (2011)

Volume 33 (2010)

Volume 32 (2009)

Keywords = Priming

Investigating the phenological stages and soybean yield under the influence of seaweed extract and initial seed quality

Abstract

Effect of Seed Treatment on Physiological Traits of Two Safflower Cultivars under Defoliation

Abstract

Effect of Pre-treatment and Seed Size on Quantitative and Qualitative Characteristics of Two Onion (Allium cepa L.) Genotypes

Abstract

Priming effect on dry matter yield and two hybrid maize qualitative characteristics with summer cultivation after wheat harvesting in the Mazadaran region

Abstract