Grape yield and quality of the grapevine cultivar limberger treated with plant growth regulators

The effects of foliar application of paclobutrasol (PK), chlorcholinechloride (CC) and gibberellic acid (GA3) on grape yield and quality of the grapevine cultivar Limberger were studied. PK and CC strongly inhibited shoot growth. The number of berries per bunch, bunch weight and grape yield per m2 were increased. At the same time, sugar content of must was either reduced (CC2000) or retained at the level of control (PK1000, CC1000). The GA150 treatment resulted in lower grape yield. At the concentration of GA3 100mg/l no significant increase in yield was found, whilst sugar content of must was significantly increased.

Download Full-text

EFFECT OF MELATONIN, GA3 AND NAA ON VEGETATIVE GROWTH, YIELD AND QUALITY OF ‘CANINO’ APRICOT FRUITS

Acta Scientiarum Polonorum Hortorum Cultus ◽

10.24326/asphc.2019.3.16 ◽

2019 ◽

Vol 18 (3) ◽

Cited By ~ 2

Author(s):

Saied Kamel Mohamed Abd El-Naby ◽

Amr Abdelkhalek Ahmed Mohamed ◽

Yahia Ibrahim Mohamed El-Naggar

Keyword(s):

Plant Growth ◽

Growth Regulators ◽

Fruit Quality ◽

Vegetative Growth ◽

Foliar Application ◽

Growth Yield ◽

Research Station ◽

Variable Parameters ◽

Yield And Quality

A field experiment was carried out during 2017–2018 in the Horticulture Research Station farm in El Kanater El Khayreia, El Kalubeia Governorate, Egypt, to find out the response of foliar application of melatonin, GA3 and NAA on vegetative and fruit attributes of ‘Canino’ apricot. Different plant growth regulators influ- enced all variable parameters related to vegetative growth and fruit. Results revealed that between all growth regulators, the foliar application of melatonin following by GA3 there was the highest vegetative growth as compared to other treatments, while GA3 gave the highest yield following by melatonin as compared to other treatments. Treatment with NAA improved vegetative growth, yield and fruit quality to a lesser extent as compared to the control.

Download Full-text

Effect of Plant Growth Regulators on Growth, Yield and Quality of Strawberry (Fragaria × ananassa Duch.) Cv. Winter Dawn under Open Field Conditions of South Gujarat

Agricultural Science Digest - A Research Journal ◽

10.18805/ag.d-5240 ◽

2020 ◽

Author(s):

K.D. Rathod ◽

T.R. Ahlawat ◽

Sanjeev Kumar ◽

M. Sarkar ◽

B. Chakraborty

Keyword(s):

Plant Growth ◽

Plant Growth Regulators ◽

Open Field ◽

Growth Regulators ◽

Growth Parameters ◽

Block Design ◽

Sugar Content ◽

Reducing Sugar ◽

Yield And Quality

Background: The South Gujarat hilly part is considered to be a non-traditional area of strawberry cultivation in India. The poor farmers of this region are cultivating strawberries under open field condition. Both, the yield and quality of strawberry fruits of this region are not up-to-the-mark as there in other parts of the country. Hence, a low-cost improved production technology is required to maximize yield as well as improve the quality of strawberry fruits. Method: Uniform runners of strawberry cv. Winter Dawn were grown in open field under paddy straw as bedding material. Foliar spraying of plant growth regulators viz. NAA (50, 75, 100 and 125 mg l-1) and GA3 (50, 75, 100 and 125 mg l-1) were done at 30 and 60 days after planting. The experiment was laid out in randomized block design with control plants receiving no spray treatments and replicated thrice. Result: The plant growth parameters like plant spread, number of leaves, number of crowns, leaf area, length of petiole, number of runners were recorded maximum with the application of 100 mg l-1 GA3. This treatment was also found to be the best in respect of number of flowers, number of fruits, fruit weight, marketable and total fruit yield of strawberry. Strawberry fruits with the highest total soluble solid, ascorbic acid, reducing sugar, non-reducing sugar and total sugar content were recorded in the plants which received 125 mg l-1 NAA. However, the plant growth regulator treatments failed to influence any significant effect on days taken to 50.0% flowering, fruit firmness and acidity content of strawberry fruits.

Download Full-text

Enhancing the Quality of Two Species of Baby Leaves Sprayed with Moringa Leaf Extract as Biostimulant

Agronomy ◽

10.3390/agronomy11071399 ◽

2021 ◽

Vol 11 (7) ◽

pp. 1399

Author(s):

Stefania Toscano ◽

Antonio Ferrante ◽

Ferdinando Branca ◽

Daniela Romano

Keyword(s):

Leaf Extract ◽

Foliar Application ◽

Sugar Content ◽

Nitrate Content ◽

Specific Response ◽

Yield And Quality ◽

Negative Effect ◽

Species Specific ◽

Moringa Oleifera Lam

Natural biostimulants obtained by plants are intensively used nowadays to improve crop yield and quality. The current study aimed to evaluate the effects of leaf extract of moringa (Moringa oleifera Lam.) (MLE) in modifying baby leaf characteristics of two genotypes of Brassica. The trial was started in October 2020 in a greenhouse; a cultivar of kale ‘Cavolo Laciniato Nero di Toscana’ (CL) and a Sicilian landrace of sprouting broccoli ‘Broccoli Nero’ (BN) were used. The plants, after 15, 30 and 40 days from sowing, were treated with MLE, while the control plants (C) with distilled water. Treatment with MLE modified morphological and nutritional value, but with different behavior in the two genotypes. In fact, in BN the treatment reduced the antioxidant activity (2.2-diphenyl-1-picrylhydrazyl (DPPH)) by 54%, while in CL the treatment increased this parameter by 40%. For the phenolic concentration and the sugar content the values recorded were significantly increased by MLE compared to control plants in CL, where in BN a significant reduction was registered. The CL plants treated with MLE showed a significant reduction (−70%) in nitrate content compared to the control plants; a negative effect was, instead, observed in BN, where the plants treated with moringa showed an increase of 60%. Results of this study showed how the foliar application of MLE was effective in improving various nutraceutical parameters, in particular in kale, because it appears to be a species-specific response.

Download Full-text

CHANGES IN THE CHARACTERISTICS OF ‘PRATA’ BANANA TREATED WITH CYTOKININ AND GIBBERELLIN

Revista Brasileira de Fruticultura ◽

10.1590/0100-29452016379 ◽

2016 ◽

Vol 38 (3) ◽

Author(s):

JULIANA DOMINGUES LIMA ◽

JÉSSICA SANTA ROSA ◽

DANILO EDUARDO ROZANE ◽

EDUARDO NARDINI GOMES ◽

SILVIA HELENA MODENESE GORLA DA SILVA

Keyword(s):

Plant Growth ◽

Gibberellic Acid ◽

Factorial Design ◽

Plant Growth Regulators ◽

Growth Regulators ◽

Physicochemical Characteristics ◽

Fruit Yield ◽

Musa Spp ◽

Yield And Quality ◽

Split Plot

ABSTRACT Plant growth regulators can influence fruit yield and quality. This study aimed to evaluate the effect of cytokinin and gibberelin on the agronomic and physicochemical characteristics of banana fruits cv. ‘Prata’ (Musa spp. AAB), according to the formation period and position in the bunch. The experiment was conducted in a completely randomized 2 x 5 factorial design, two periods of bunch development (summer and winter), five treatments and ten replicates. To study the effect of position in the bunch, split plot was adopted, considering in the plot, 2 x 5 factorial and in subplots, hand 1, hand 4 and last hand. Treatments consisted of 2 pulverizations with water, 150 mg L-1 cytokinin, 200 mg L-1 of gibberellic acid, 100 mg L-1 of cytokinin plus 200 mg L-1 of gibberellic acid and 200 mg L-1 of cytokinin plus 200 mg L-1 of gibberellic acid, applied from the fourth to the last hand of the bunch. Cytokinin and gibberellin, alone or associated, regardless of formation period and position, did not affect the size and physicochemical characteristics of fruits, only delayed the bunch harvest.

Download Full-text