Ethylene, 1-methylcyclopropene and silver thiosulfate on the post-production of ornamental pepper

ABSTRACT: Species from Capsicum genus are used for different purposes and in more recent years as ornamental potted plant. Despite the increased commercial importance, there are only a few studies on the environmental factors affecting the post-production shelf life of these ornamental plants. The presence of ethylene induces various responses on potted peppers, reducing the shelf life of sensitive cultivars. This study aimed to evaluate the effects of ethylene and the inhibitors of ethylene action, 1-methylcyclopropene (1-MCP) and silver thiosulfate (STS) on the shelf life of potted 'Calypso' and 'MG 302' peppers. Cultivar 'MG 302' showed intermediate sensitivity to ethylene action, while the cultivar 'Calypso' showed complete abscission of leaves when exposed to ethylene. In both cultivars, treatment with STS + Ethylene presented symptoms of phytotoxicity in plants, while treatment with 1-MCP + Ethylene was effective in delaying senescence and abscission for the cultivar 'MG 302', while cultivar 'Calypso' showed abscission similar to control plants. Plants treated with STS showed the longest durability when compared to the other treatments, about six days for 'Calypso' and 18 days for 'MG 302'. Nevertheless, plants treated with 1-MCP also exhibited good shelf life, about six days for 'Calypso' and nine days for the 'MG 302'. Although the treatment with STS was more efficient on the plants shelf life, did not completely block the action of ethylene and exhibited some phytotoxicity, while the treatment with 1-MCP had good efficiency without inducing any toxicity.

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1-MCP efficiency in quality of ornamental peppers

Horticultura Brasileira ◽

10.1590/s0102-053620180414 ◽

2018 ◽

Vol 36 (4) ◽

pp. 510-514 ◽

Cited By ~ 1

Author(s):

Wellington S Ribeiro ◽

Clebson dos S Carneiro ◽

Christiane de Fátima M França ◽

Cleide Maria F Pinto ◽

Paula Cristina C Lima ◽

...

Keyword(s):

Shelf Life ◽

Capsicum Annuum ◽

Ornamental Plants ◽

Production Quality ◽

Ethylene Action ◽

Post Production ◽

Pre Treatment ◽

Exogenous Ethylene

ABSTRACT 1-MCP has been effectively used as an antagonist of ethylene deleterious actions in flowers and ornamental plants. The objective was to evaluate the efficiency of 1-MCP (0.0, 0.5, 1.0 and 1.5 g m-3) in maintaining post-production quality of exogenous ethylene sensitive ornamental pepper. Two commercial varieties were evaluated: Pimenta Colorida and Pimentão Ornamental, both Capsicum annuum. The pre-treatment with 1-MCP, regardless of the applied concentration, was effective in blocking the ethylene action reducing the leaves abscission, flowers and fruits of both genotypes by 100%. Plants pretreated with 1-MCP had postproduction life increased by eight and nine days for Pimenta Colorida and Pimentão Ornamental, respectively. The 1-MCP application at the concentration of 1.0 g m-3 is efficient in maintaining ornamental quality and prolonging the shelf life of Pimenta Colorida and Pimentão Ornamental.

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Breed and environmental factors affecting the reconception of indigenous beef cows in Botswana

Animal Science ◽

10.1017/s0003356100001100 ◽

1982 ◽

Vol 35 (3) ◽

pp. 413-420

Author(s):

N. G. Buck ◽

D. Light

Keyword(s):

Environmental Factors ◽

Environmental Effects ◽

Reproductive Performance ◽

Beef Cows ◽

The Other ◽

Factors Affecting ◽

Lactating Cows ◽

Management Interventions ◽

Lower Fertility ◽

Main Effects

ABSTRACTThe breeding records of 2710 lactating cows, of the Africander (1208), Tswana (542) and Tuli (960) breeds, were analysed to examine the effects of breed and environment on reconception. The reconception rate of Africander cows (0·56) was significantly lower than that of Tswana and Tuli cows (0·80 and 0·81 respectively) (P<0·01). The environmental effects of ranch, calving year, calving period and age/parity all had significant effects on reconception (P<0·01). Interactions between breed and the other main effects were all significant.The Africander is considered to be a breed of lower fertility than the other two Sanga breeds, the Tswana and Tuli, in Botswana. The results are discussed with respect to determining management interventions to improve cow reproductive performance.

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674 Horticultural Aspects of Phytochemicals in Small Fruits: Introduction to the Workshop

HortScience ◽

10.21273/hortsci.35.3.515a ◽

2000 ◽

Vol 35 (3) ◽

pp. 515A-515

Author(s):

Fumiomi Takeda

Keyword(s):

Food Safety ◽

Environmental Factors ◽

Shelf Life ◽

Human Health ◽

Value Added ◽

Consumer Perception ◽

Detection Methods ◽

Factors Affecting ◽

Safety Issues ◽

Small Fruit

Small fruits, such as strawberries and blueberries, are rich in phytonutrients and regarded to have high human health-functional bioactivities. In this workshop, 1) the horticultural and environmental factors affecting antioxidant levels in small fruit, 2) fruit volatiles as related to postharvest shelf life and quality, 3) changes in non-volatile fruit constituents, and 4) olfactometric analyses and consumer perception of these value-added fruit constituents will be discussed. In addition, novel detection methods for fruit- and microbial-derived aromas to address the food safety issues will be discussed.

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Factors Affecting Seed Germination of Feather Fingergrass (Chloris virgata)

Weed Science ◽

10.1614/ws-d-15-00212.1 ◽

2016 ◽

Vol 64 (4) ◽

pp. 605-612 ◽

Cited By ~ 16

Author(s):

Nimesha Fernando ◽

Talia Humphries ◽

Singarayer K. Florentine ◽

Bhagirath S. Chauhan

Keyword(s):

Salt Stress ◽

Sodium Chloride ◽

Heat Shock ◽

Seed Germination ◽

Environmental Factors ◽

Laboratory Experiments ◽

The Other ◽

Factors Affecting ◽

The World ◽

Chloris Virgata

Laboratory experiments were carried out to determine the effect of several environmental factors on seed germination of feather fingergrass, one of the most significant emerging weeds in warm regions of the world. Seed germination occurred over a broad range of temperatures (17/7, 25/10, and 30/20 C), but germination being highest at alternating temperatures of 30/20 C under both 12 h light/12 h dark and 24 h dark conditions. Although seed germination was favored by light, some seeds were capable of germinating in the dark. Increasing salt stress decreased seed germination until complete inhibition was reached at 250-mM sodium chloride. Germination decreased from 64 to 0.7% as osmotic potential decreased from 0 to −0.4 MPa, and was completely inhibited at −0.6 MPa. Higher seed germination (> 73%) was observed in the range of pH 6.4 to 8 than the other tested pH levels. Heat shock had a significant effect on seed germination. Germination of seeds placed at 130 C for 5 min was completely inhibited for both dry and presoaked seeds. The results of this study will help to develop protocols for managing feather fingergrass, and to thus avoid its establishment as a troublesome weed in economically important cropping regions.

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ENVIRONMENTAL FACTORS AFFECTING THE SHELF LIFE OF FLAME SEEDLESS GRAPES

Acta Horticulturae ◽

10.17660/actahortic.1994.368.10 ◽

1994 ◽

pp. 97-105

Author(s):

A. Hegazi ◽

El. Barkoki

Keyword(s):

Environmental Factors ◽

Shelf Life ◽

Factors Affecting ◽

Seedless Grapes

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Sensitivity of potted ornamental peppers to ethylene

Ornamental Horticulture ◽

10.14295/oh.v24i4.1458 ◽

2018 ◽

Vol 24 (4) ◽

pp. 429-434

Author(s):

Mayana Ferreira Nascimento ◽

Rusthon Magno Cortez Dos Santos ◽

Fernanda Ferreira De Araújo ◽

João José Da Silva Neto ◽

Fernando Luiz Finger ◽

...

Keyword(s):

Shelf Life ◽

Ornamental Plants ◽

Lower Percentage ◽

High Genetic Diversity ◽

Fruit Abscission ◽

Ethylene Sensitivity ◽

Potted Plants ◽

Number Of Leaves ◽

Post Production

Many environmental factors affect the post-production shelf life of potted ornamental plants. Exposure to ethylene can reduce the quality of many species, inducing flower, fruit and leaf abscission and senescence. The present study identified ethylene-resistant pepper genotypes during post-production shelf life testing. Potted plants of eleven pepper cultivars were transferred o a 90-L sealed container when they had 30% of ripe fruits and treated with 10 μL L-1 of ethylene for 48 hours. Number of leaves and fruits were counted at the beginning of ethylene exposure and after 48, 96 and 144 hours. The experimental design was completely randomized, with five replicates of individual pots. The cultivars showed varied rates of foliar and fruit abscission. ‘Peloteira’ showed higher resistance to ethylene, with foliar abscission of 19%, after 144 hours. For fruit abscission, the cultivars ‘Peloteira’, ‘Jalapeño’, ‘Stromboli ornamental’, ‘Malagueta’ and ‘Rocoto Vermelha’ presented a lower percentage of leaf drop, varying between 9 and 34%, after 144 hours of exposure to ethylene. This study showed that ornamental peppers have high genetic diversity regarding ethylene sensitivity.

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