Biomass Accumulation, Photosynthetic Pigments, Osmotic Adjustments and Antioxidant Activities of Leymus chinensis in Response to BA, BR, and GA

ABSTRACT: Abiotic stresses and poor biomass accumulation are chief constraints to accomplish potential yield in Leymus chinensis. An experiment was conducted to improve biomass and correlation of biomass accumulating attributes with photosynthetic pigments, osmotic substances and antioxidants under foliar application of different plant growth substances. The experiment was conducted at inner Mongolia Xilinguole, China, using a Randomized Complete Block Design and 5 replications. The treatments consisted of water (control); BA5 = application of BA (6-benzylaminopurine) at 5 mg L-1; BA25 = application of BA at 25 mg L-1; BA50 = application of BA at 50 mg L-1; BR0.02 = application of BR (brassinosteroid) at 0.02 g L-1; BR0.2 = application of BR at 0.2 mg L 1; BR2 = application of BR at 2 mg L-1; GA10 = application of GA (gibberellic acid) at 10 mg L-1; GA50 = application of GA at 50 mg L-1 and GA100 = application of GA at 100 mg L-1. Application of all plant growth substances significantly improved biomass, osmotic adjustments, photosynthetic pigments and antioxidant activities compared to control. However, the most promising results were found with 0.2 mg L-1 BR. The highest chlorophyll a/b, glutathione and ascorbate peroxidase activities were recorded with 25 mg L-1 BA. Conclusively, 25 mg L-1 BA, 0.2 mg L-1 BR and 10 mg L-1 GA exhibited more promising results than other concentrations for the evaluated attributes.

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Pengaruh Konsentrasi Zat Pengatur Tumbuh dan Bagian Asal Bibit Terhadap Pertumbuhan Vegetatif Pembibitan Tebu

Jurnal Agro Industri Perkebunan ◽

10.25181/jaip.v9i1.1910 ◽

2021 ◽

pp. 47-56

Author(s):

Oki Puspita Wardani ◽

Priyadi Priyadi ◽

Yatmin Yatmin

Keyword(s):

Plant Growth ◽

Block Design ◽

Growth Substances ◽

Randomized Block Design ◽

Seed Growth ◽

Two Factors ◽

Seed Origin ◽

Plant Growth Substances

This study was conducted on Pujodadi Village, Trimurjo, Central Lampung from September to December 2020. The study used a factorial randomized block design with two factors and three replications. The first factor is concentration of plant growth substances which consists of 5 levels; Z0 (0 ml.lt-1), Z1 (3.5 ml.lt-1), Z2 (7 ml.lt-1), Z3 (10.5 ml.lt-1) and Z4 (14 ml.lt-1). The second factor is the origin of the seed consists of three parts; P1 (top), P2 (middle), and P3 (bottom). The research objective was to study the effect of plant growth substances concentration and part of seed origin in sugarcane seedlings. The results showed that the plant growth substances concentration significantly increased the percentage of growth and the time 50% of the seeds sprouted. The seed origin of the top part showed the best growth compared to the middle and bottom. There was no interaction between plant growth substances concentration and seed origin on sugarcane seed growth.

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Saline-water irrigation and plant growth regulator application on zucchini fruit yield and quality

Revista Brasileira de Engenharia Agrícola e Ambiental ◽

10.1590/1807-1929/agriambi.v24n10p679-684 ◽

2020 ◽

Vol 24 (10) ◽

pp. 679-684

Author(s):

Maria W. de L. Souza ◽

Salvador B. Torres ◽

Francisco de A. de Oliveira ◽

Isabelly C. da S. Marques ◽

Kleane T. O. Pereira ◽

...

Keyword(s):

Plant Growth ◽

Growth Regulator ◽

Plant Growth Regulator ◽

Foliar Application ◽

Saline Water ◽

Block Design ◽

Biomass Accumulation ◽

Fruit Yield ◽

Flowering Stage ◽

Yield And Quality

ABSTRACT The objective of this study was to evaluate the effect of a plant growth regulator (PGR; Stimulate®) on the yield and quality of zucchini fruits from plants of the cultivar Caserta-Italiana grown under different salinity levels of the irrigation water (SLIW). A randomized block design was used, in a 2 × 6 factorial arrangement consisted of two SLIW (0.5 and 5.0 dS m-1) and six PGR application modes: imbibition of seeds for 8 h in distilled water (PGR-T1; Control); imbibition of seeds for 8 h in PGR at 10 mL L-1 (PGR-T2); imbibition of seeds for 8 h in PGR at 10 mL L-1 plus foliar application at 10 mL L-1 at the flowering stage (PGR-T3); imbibition of seeds for 8 h in PGR at 10 mL L-1 plus two foliar applications at the flowering stage and at 20 and 30 days after sowing (PGR-T4); foliar application at 10 mL L-1 at the flowering stage (PGR-T5); and two foliar applications at 10 mL L-1 at 20 and 30 days after sowing (PGR-T6). The SLIW affected differently the variables of the zucchini crops evaluated. The PGR application to plants under no salt stress (0.5 dS m-1) increased the solid soluble concentration and biomass accumulation of zucchini fruits. The PGR application as seed treatment and foliar application at the flowering stage increased the fruit yield of zucchini plants irrigated with saline water.

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