Positive effects of plant growth regulators on physiology responses of Fragaria × ananassa cv. ‘Camarosa’ under salt stress

2018 ◽  
Vol 19 (1) ◽  
pp. 104-114 ◽  
Author(s):  
Somayeh Faghih ◽  
Abdolkarim Zarei ◽  
Cyrus Ghobadi
Keyword(s):  
Salt Stress ◽  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Fragaria Ananassa ◽  
Positive Effects

scholarly journals Morpho-physiological and molecular responses of two Libyan bread wheat cultivars to plant growth regulators under salt stress

2020 ◽  
Vol 15 (3) ◽  
Author(s):  
El Hadi Hadia ◽  
Amor Slama ◽  
Leila Romdhane ◽  
Hatem Cheikh M’hamed ◽  
Ahmed Houssein Abodoma ◽  
...  
Keyword(s):  
Gene Expression ◽  
Salt Stress ◽  
Plant Growth ◽  
Gibberellic Acid ◽  
Plant Growth Regulators ◽  
Bread Wheat ◽  
Growth Regulators ◽  
Glycine Betaine ◽  
Growth Yield ◽  
Wheat Varieties

To study the effects of salt stress and plant growth regulators (kinetin, gibberellic acid, potassium) on growth, yield, glycine betaine content, phosphoenolpyruvate carboxylase (PEPC) and ribulose biphosphate carboxylase (RBC) gene expression of two Libyan bread wheat varieties, a factorial design of greenhouse experiment with three replications was conducted. Results revealed that salt stress significantly reduced plant growth and productivity of both varieties. Moreover, the addition of kinetin + potassium and gibberellic acid + potassium had improved the performance of the morpho-metric parameters of both genotypes under salt stress; but the performance was more effective for kinetin treatment than for gibberellic acid. At the biochemical level, the results showed that salt stress increased glycine betaine contents in both varieties with different proportions. This increase is more elevated in the presence of kinetin + potassium than the treatment with gibberellic acid+ potassium, which showed an almost similar result as in only salt stress. At the molecular level, the effects of salt stress and plant growth regulators on the PEPC and RBC gene expression showed that the increase was significantly higher for kinetin, gibberellic acid, and salt stress when compared to the control.

scholarly journals Effect of Plant Growth Regulators on the Propagation of African Violet (Saintpaulia ionantha H. Wendl.) from Leaf Cuttings

2016 ◽  
Vol 65 (3-4) ◽  
pp. 63-67
Author(s):  
Emina Mladenović ◽  
Martina Zorić ◽  
Jelena Čukanović ◽  
Ksenija Hiel ◽  
Lazar Pavlović ◽  
...  
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Effective Means ◽  
Cost Effective ◽  
Positive Effects ◽  
African Violet ◽  
Saintpaulia Ionantha ◽  
Commercial Plant ◽  
Secondary Roots

Summary The purpose of this paper is to examine the effects of commercial plant growth regulators (PGRs), namely Inict-1 and Incit-5, on the rooting of African violet leaf cuttings (Saintpaulia ionantha H. Wendl.). The production of African violets has grown considerably in recent years, thus it is important to study the most rapid and cost-effective means of mass production. The propagated plant material of the cultivar ‘Nagano’ was treated with Incit-1 and Incit-5. The following parameters were observed: the occurrence of the first root, the number of formed secondary roots and root lengths, the occurrence of the first leaf, and the occurrence of the first flower. The results obtained showed that the use of commercial rooting hormones, namely Incit-1 and Incit-5, exerted positive effects on the duration of rooting, the number of secondary roots formed, and the root lengths of African violets. During the research, it was observed that the rooting durations of all the plants treated with Incit-1 and Incit-5 were 5 days shorter. The results indicate that the plants treated with PGRs necessitate less time to root, less time to produce new leaves, and, consequently, less time to produce flowers.

Growth regulators restore germination of Orobanche seeds that are conditioned under water stress and suboptimal temperature

2006 ◽  
Vol 57 (11) ◽  
pp. 1195 ◽  
Author(s):  
W. J. Song ◽  
W. J. Zhou ◽  
Z. L. Jin ◽  
D. Zhang ◽  
K. Yoneyama ◽  
...  
Keyword(s):  
Water Stress ◽  
Seed Germination ◽  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Crop Production ◽  
Combined Treatments ◽  
Suboptimal Temperature ◽  
Germination Stimulant ◽  
Positive Effects

Broomrapes (Orobanche spp.) are serious root parasitic weeds that cause great damage to crop production in many parts of the world. The study focussed on the influence of plant growth regulators on germination of Orobanche seeds conditioned under suboptimal temperature (at 13°C) and under water stress (at –1 and –2 MPa). Three widely distributed species of broomrapes (O. aegyptiaca, O. ramosa, and O. minor) were used in the experiments. Exogenous GA3 (10 mg/L), brassinolide (1 mg/L), and fluridone (10 mg/L) significantly increased the broomrape seed response to the germination stimulant GR24 (10–6 m) even when seeds were first conditioned at a suboptimal temperature and under water stress. The highest germination was obtained when the combined treatments with fluridone and brassinolide, or with GA3 and brassinolide were applied together with the germination stimulant. This indicates that there were additive effects among various plant growth regulators in the regulation of germination response in Orobanche seeds. With the prolongation of conditioning periods under low temperature stress, the restoration capacities of seed germination by a single growth regulator decreased, but the combined treatments of growth regulators retained their positive effects in restoring seed germination.

Alleviation of salt stress by plant growth regulators in Triticum aestivum L.

1997 ◽  
Vol 39 (2) ◽  
pp. 269-275 ◽  
Author(s):  
K.S. Datta ◽  
S.K. Varma ◽  
R. Angrish ◽  
B. Kumar ◽  
P. Kumari
Keyword(s):  
Triticum Aestivum ◽  
Salt Stress ◽  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Triticum Aestivum L
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