EFFECT OF IRRIGATION LEVELS WITH FOLIAR SPRAY OF SILICON, CALCIUM AND AMINO ACIDS ON "THOMPSON SEEDLESS" GRAPEVINES. I. YIELD AND FRUIT QUALITY

2018 ◽  
Vol 23 (3) ◽  
pp. 429-452
Keyword(s):  
Amino Acids ◽  
Fruit Quality ◽  
Foliar Spray ◽  
Thompson Seedless ◽  
Irrigation Levels

scholarly journals The Exogenous Application of Micro-Nutrient Elements and Amino Acids Improved the Yield, Nutritional Status and Quality of Mango in Arid Regions

Plants ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 2057
Author(s):  
Ahmed M. S. Kheir ◽  
Zheli Ding ◽  
Mohamed S. Gawish ◽  
Hanan M. Abou El Ghit ◽  
Taghred A. Hashim ◽  
...  
Keyword(s):  
Amino Acids ◽  
Fruit Quality ◽  
Arid Regions ◽  
Foliar Application ◽  
Chemical Constituents ◽  
Foliar Spray ◽  
Soluble Solids ◽  
Strong Positive Correlation ◽  
Yield And Quality

The mango is one of the most valuable and appealing tropical fruits due to its color, aroma, tasteful remarkable flavor, and nutritive value; however, improving the yield and quality of mango is an urgent goal in order to combat global population growth. The application of amino acids and a micronutrient mixture might improve the yield and quality features but further research is still required in arid regions. To study the combined effect of a micronutrient mixture (MM) and amino acids (AA) at different rates, twenty-seven Fagri Kalan mango trees (15 years old) were carefully selected. The foliar application effect of MM and AA on vegetative growth, total chlorophyll, leaf chemical constituents, productivity, and the fruit quality of mango trees (cv. Fagri Kalan) was investigated. The findings revealed that the investigated growth measurements and leaf chemical contents, as well as the fruiting aspects and the fruit quality improved significantly due to the application of MM and AA. A higher application rate of the micronutrient mixture (2 g L−1) in combination with the highest amino acid concentration (2 mg L−1) was the most effective combination that increased the yield, total soluble solids (TSS), total sugars (TS), and total carbohydrates by 28.0%, 3.0%, 5.8% and 15.0%, respectively, relative to untreated plants. The relationship between such characteristics revealed a strong positive correlation (0.80–0.95), confirming the importance of these materials in increasing the yield and quality of mangoes. Thus, using doses of MM and AA as a foliar spray four times during each growing season is recommended under similar environmental conditions and horticulture practices used in the current experiment.

scholarly journals Relief Role of Lysine Chelated Zinc (Zn) on 6-Week-Old Maize Plants under Tannery Wastewater Irrigation Stress

2020 ◽  
Vol 17 (14) ◽  
pp. 5161
Author(s):  
Rehan Ahmad ◽  
Wajid Ishaque ◽  
Mumtaz Khan ◽  
Umair Ashraf ◽  
Muhammad Atif Riaz ◽  
...  
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Plant Growth ◽  
Foliar Application ◽  
Antioxidant Activities ◽  
Foliar Spray ◽  
Tannery Wastewater ◽  
Organic Load ◽  
Maize Plants

Tannery wastewater mainly comes from leather industries. It has high organic load, high salinity, and many other pollutants, including chromium (Cr). Tannery wastewater is generally used for crop irrigation in some areas of Pakistan and worldwide, due to the low availability of good quality of irrigation water. As tannery wastewater has many nutrients in it, its lower concentration benefits the plant growth, but at a higher concentration, it damages the plants. Chromium in tannery wastewater accumulates in plants, and causes stress at physiological and biochemical levels. In recent times, the role of micronutrient-amino acid chelated compounds has been found to be helpful in reducing abiotic stress in plants. In our present study, we used lysine chelated zinc (Zn-lys) as foliar application on maize (Zea mays L.), growing in different concentrations of tannery wastewater. Zinc (Zn) is required by plants for growth, and lysine is an essential amino acid. Maize plants were grown in tannery wastewater in four concentrations (0, 25%, 50%, and 100%) and Zn-lys was applied as a foliar spray in three concentrations (0 mM, 12.5 mM, and 25 mM) during plant growth. Plants were cautiously harvested right after 6 weeks of treatment. Foliar spray of Zn-lys on maize increased the biomass and improved the plant growth. Photosynthetic pigments such as total chlorophyll, chlorophyll a, chlorophyll b and contents of carotenoids also increased with Zn-lys application. In contrast to control plants, the hydrogen peroxide (H2O2) contents were increased up to 12%, 50%, and 68% in leaves, as well as 16%, 51% and 89% in roots at 25%, 50%, and 100% tannery water application, respectively, without Zn-lys treatments. Zn-lys significantly reduced the damages caused by oxidative stress in maize plant by decreasing the overproduction of H2O2 and malondialdehyde (MDA) in maize that were produced, due to the application of high amount of tannery wastewater alone. The total free amino acids and soluble protein decreased by 10%, 31% and 64% and 18%, 61% and 122% at 25%, 50% and 100% tannery water treatment. Zn-lys application increased the amino acids production and antioxidant activities in maize plants. Zn contents increased, and Cr contents decreased, in different parts of plants with Zn-lys application. Overall, a high concentration of tannery wastewater adversely affected the plant growth, but the supplementation of Zn-lys assertively affected the plant growth and enhanced the nutritional quality, by enhancing Zn and decreasing Cr levels in plants simultaneously irrigated with tannery wastewater.

scholarly journals Transcriptome Changes Associated with Boron Applications in Fruits of Watercore-susceptible Pear Cultivar

2021 ◽  
Author(s):  
Xiao Liu ◽  
Dong-He Liu ◽  
Yan Shen ◽  
Jing Liu ◽  
Jun Wei ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Fruit Quality ◽  
Foliar Spray ◽  
Acid Synthesis ◽  
Starch Degradation ◽  
Pyrus Pyrifolia ◽  
Pear Fruit ◽  
Physiological Disorder ◽  
Balance Of Plant ◽  
Excessive Accumulation

Abstract Watercore is a common physiological disorder in pear and is closely related to excessive accumulation of sorbitol and sucrose. Our previous research found the watercore incidence of ‘Akibae’ (Pyrus pyrifolia cv. Akibae) fruit significantly decreased after boron application (BA). Moreover, foliar spray of boric acid also significantly improved fruit quality. To uncover the mechanisms underlying pear fruit response to BA, a comprehensive transcriptome analysis was performed in this study. Transcriptome results revealed a total of 3146 up-regulated and 1145 down-regulated differently expressed genes (DEGs) between control and treated fruits of ‘Akibae’ pear, respectively. BA significantly induced expression of sorbitol metabolism and sucrose metabolism genes. Besides, BA also increased the expression of starch degradation, fatty acid synthesis, IAA (indole-3-acetic acid) degradation, GA (gibberellin acid) synthesis and inhibit the expression of ethylene synthesis genes. Overall, these findings suggested that BA alleviated ‘Akibae’ watercore occurrence and improve fruit quality by regulating the decrease of sorbitol and sucrose, increased of fatty acid and a balance of plant hormone. Our results provided further information for understanding the molecular mechanism of the effect of boron application on pear fruit.

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