scholarly journals Effects of Foliar Application of CaCl2 on Ca Content and Occurrence and Alleviation of Blossom-end Rot of Paprika During High Temperature Season

2021 ◽  
Vol 30 (4) ◽  
pp. 263-270
Author(s):  
Jeong Sim Oh ◽  
Yong-Beom Lee ◽  
Jong Hyang Bae ◽  
Jong Kuk Na ◽  
Ki Young Choi
Keyword(s):  
High Temperature ◽  
Foliar Application ◽  
Blossom End Rot

scholarly journals Rising Atmospheric Temperature Impact on Wheat and Thermotolerance Strategies

Plants ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 43
Author(s):  
Adeel Khan ◽  
Munir Ahmad ◽  
Mukhtar Ahmed ◽  
M. Iftikhar Hussain
Keyword(s):  
High Temperature ◽  
Industrial Revolution ◽  
Foliar Application ◽  
Pollen Viability ◽  
Grain Filling ◽  
Crop Productivity ◽  
Potassium Nitrate ◽  
Agricultural Crop ◽  
Stay Green ◽  
Seed Formation

Temperature across the globe is increasing continuously at the rate of 0.15–0.17 °C per decade since the industrial revolution. It is influencing agricultural crop productivity. Therefore, thermotolerance strategies are needed to have sustainability in crop yield under higher temperature. However, improving thermotolerance in the crop is a challenging task for crop scientists. Therefore, this review work was conducted with the aim of providing information on the wheat response in three research areas, i.e., physiology, breeding, and advances in genetics, which could assist the researchers in improving thermotolerance. The optimum temperature for wheat growth at the heading, anthesis, and grain filling duration is 16 ± 2.3 °C, 23 ± 1.75 °C, and 26 ± 1.53 °C, respectively. The high temperature adversely influences the crop phenology, growth, and development. The pre-anthesis high temperature retards the pollen viability, seed formation, and embryo development. The post-anthesis high temperature declines the starch granules accumulation, stem reserve carbohydrates, and translocation of photosynthates into grains. A high temperature above 40 °C inhibits the photosynthesis by damaging the photosystem-II, electron transport chain, and photosystem-I. Our review work highlighted that genotypes which can maintain a higher accumulation of proline, glycine betaine, expression of heat shock proteins, stay green and antioxidant enzymes activity viz., catalase, peroxidase, super oxide dismutase, and glutathione reductase can tolerate high temperature efficiently through sustaining cellular physiology. Similarly, the pre-anthesis acclimation with heat treatment, inorganic fertilizer such as nitrogen, potassium nitrate and potassium chloride, mulches with rice husk, early sowing, presoaking of a 6.6 mM solution of thiourea, foliar application of 50 ppm dithiothreitol, 10 mg per kg of silicon at heading and zinc ameliorate the crop against the high temperature. Finally, it has been suggested that modern genomics and omics techniques should be used to develop thermotolerance in wheat.

scholarly journals Effect of abscisic acid on the calcium content for controlling blossom-end rot in tomato under water stress

2018 ◽  
Vol 48 (4) ◽  
pp. 414-419
Author(s):  
Carlos Agostinho Balate ◽  
Douglas Correa de Souza ◽  
Luciane Vilela Resende ◽  
Sergio Tonetto de Freitas
Keyword(s):  
Abscisic Acid ◽  
Water Stress ◽  
Calcium Uptake ◽  
Foliar Application ◽  
Calcium Content ◽  
Distal Region ◽  
Tomato Plants ◽  
Blossom End Rot ◽  
Beginning Of Flowering ◽  
Irrigation Levels

ABSTRACT Water stress in tomato plants may cause the incidence of blossom-end rot. This study aimed to analyze the effect of abscisic acid leaf application for increasing the calcium uptake in irrigated tomato (‘Santa Clara' cultivar) in the field, as a possible mechanism of blossom-end rot inhibition. The treatments consisted of four irrigation levels (25 %, 50 %, 75 % and 100 % of the crop water requirements to fulfil the crop evapotranspiration) and two abscisic acid doses (0 mg L-1 and 500 mg L-1). The fruits were harvested at 15 and 30 days after the anthesis and evaluated for calcium content and percentage of blossom-end rot. The application of abscisic acid increased the calcium partition to the distal region of the fruits at 30 days after the beginning of flowering, as well as reduced the incidence of blossom-end rot by 86 %, when compared with plants not treated with abscisic acid. It is possible to conclude that the foliar application of abscisic acid can significantly reduce the incidence of blossom-end rot.

scholarly journals Role of salicylic acid in heat stress tolerance in tri-genomic Brassica napus L.

2020 ◽  
Vol 33 (1) ◽  
pp. 13-20
Author(s):  
Muhammad Awais Ghani ◽  
Muhammad Mehran Abbas ◽  
Basharat Ali ◽  
Khurram Ziaf ◽  
Muhammad Azam ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Heat Stress ◽  
High Temperature ◽  
Brassica Napus ◽  
Biochemical Analysis ◽  
Foliar Application ◽  
Brassica Napus L ◽  
Elevated Activity ◽  
Heat Stress Tolerance

Tri-genomic Brassica napus L.wasdeveloped by the cross between Brassica napusand Brassica nigra. The crop is animportant source of vegetable seed oil in Pakistan,after cotton. The low oilseed rape yield is attributed to high temperature in the production zones. Interspecific hybridization using these two speciescan be helpful to produce heat resistant hybrids. On the other hand, it has been found that foliar application of different plant growth regulators can be used to reduce the heat stress in Brassica. The objectiveof this studywas to test the response of three different tri-genomic hybrids to high temperature stressat seedling stage. Seedlings were foliar sprayed with 0.13 mM salicylic acid (SA) prior to exposure tohigh temperatureat two true leaf stage. The plants were harvested after 30 days of sowing for growth and biochemical analysis. Plants ofV38 showed the highest values for all morphological traits and biochemical activities among the threehybrids. In general, plants exposed to the temperature stress exhibited a significant decline in growth, chlorophyll content and enzyme activity.Foliar application of SA significantly improved leaf and root biomass under heat stress.Further, antioxidativeenzyme activities significantly increased in response to SA either compared to control or to plants exposed to temperature stress.It is concluded thatapplication of salicylic acid elevated activity of antioxidative enzymes and was helpful in mitigating the detrimental effects of high temperature inoil seed rape.

scholarly journals Effect on Yield and Incidence of Blossom-end Rot of Foliar Application of Calcium Products on Tomato Cultivated in Saline Conditions

HortScience ◽  
1997 ◽  
Vol 32 (3) ◽  
pp. 475E-475
Author(s):  
J.A. Franco ◽  
P.J. Pérez-Saura ◽  
A. Durán
Keyword(s):  
Foliar Application ◽  
Saline Water ◽  
Calcium Nitrate ◽  
Randomized Design ◽  
Significant Difference ◽  
Blossom End Rot ◽  
Total Free Amino Acids ◽  
The Difference ◽  
Effect On Yield ◽  
And Control

The appearance of blossom-end rot (BER) in tomato is related to a decrease in the absorption and translocation of Ca due to excessive salinity in the soil solution. An experiment was conducted to investigate the effects of calcium nitrate (NT), EDTA-Ca (ED) and Aminoquelant-Ca (AQ)—a product containing Ca, B and protein hydrolisate—on the yield and incidence of BER when applied to the leaves of tomato (Lycopersicon esculentum Mill. `Durinta') grown in the open with a drip irrigation using saline water from a well (mean ECw 5.2 dS·m–1). The three calcium treatments and control were replicated four times, with 12 plants per replication, in a completely randomized design. Although yield per plant was higher with AQ, the difference was not statistically significant. Fewer fruit were affected by BER after treatment with ED and AQ than with NT and in the control. Leaf Ca concentration did not differ significantly between treatments. However, leaf B concentration was higher after treatment with AQ. Fruit Ca and B concentrations did not differ significantly in any treatment. The total free amino acids content in leaves was higher after AQ treatment than in the other treatments and control, although no significant difference was observed between the treatments in the fruit.

scholarly journals Effects of Foliar Application of Calcium Solutions on the Incidence of Blossom-end Rot of Tomato Fruit

1996 ◽  
Vol 65 (3) ◽  
pp. 553-558 ◽  
Author(s):  
Teruo Wada ◽  
Hideo Ikeda ◽  
Masafumi Ikeda ◽  
Hajime Furukawa
Keyword(s):  
Foliar Application ◽  
Tomato Fruit ◽  
Blossom End Rot

scholarly journals Greenhouse Performance of Six Potted Anthurium Cultivars in a Subtropical Area

1999 ◽  
Vol 9 (3) ◽  
pp. 409-412 ◽  
Author(s):  
Yin-Tung Wang
Keyword(s):  
High Temperature ◽  
Foliar Application ◽  
Flower Color ◽  
The Other ◽  
Subtropical Area ◽  
Flower Production ◽  
Warm Environment ◽  
Air Temperatures

Vegetatively propagated liners of six hybrid anthurium cultivars (Anthurium Schott), `Pink Aristocrat', `Patty Anne', `Purple Viking', `Royal Pink', Royal Orange', and `Royal Red', were planted in pots and grown under warm [maximum 30 °C (86 °F)] or hot [maximum 35 °C or (95 °F)] conditions with or without a single foliar application of 500 mg·L-1 (ppm) GA3 and evaluated after 7, 9, and 13 months. GA3, when applied 7 months after planting, did not promote flower production or result in taller plants. Plants in warm and hot areas, except for `Pink Aristocrat', had similar degrees of foliage injury in April, but those in the warm environment had better quality in July than those in the hothouse. Yellow leaves and necrosis on leaf margins were apparent on plants in the hot area. `Pink Aristocrat' was the most (>20 flowers) and `Royal Red' was the least (2 flowers) floriferous after 1 year. Flower color of `Royal Red' was unaffected by high temperature, whereas flowers of the other cultivars faded under heat. Growing these anthurium cultivars at maximum 30 °C (86 °F) air temperatures is recommended for good quality and high flower count.

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