scholarly journals Thickening Growth Inhibition and Re-thickening Growth of Tuberous Roots of Sweet Potato Plants (Ipomoea batatas Poiret)

1976 ◽  
Vol 45 (1) ◽  
pp. 131-138
Author(s):  
Yoshio HOZYO ◽  
Shinjiro KATO
Keyword(s):  
Growth Inhibition ◽  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Potato Plants ◽  
Tuberous Roots

scholarly journals Potential of Pantoea dispersa as an effective biocontrol agent for black rot in sweet potato

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Lingmin Jiang ◽  
Jae Chul Jeong ◽  
Jung-Sook Lee ◽  
Jeong Mee Park ◽  
Jung-Wook Yang ◽  
...  
Keyword(s):  
Sweet Potato ◽  
Vascular Tissue ◽  
Potato Cultivar ◽  
Biocontrol Agents ◽  
Blue Staining ◽  
Black Rot ◽  
Promising Alternative ◽  
Post Harvest ◽  
Potato Plants ◽  
Tuberous Roots

Abstract Biocontrol offers a promising alternative to synthetic fungicides for the control of a variety of pre- and post-harvest diseases of crops. Black rot, which is caused by the pathogenic fungus Ceratocytis fimbriata, is the most destructive post-harvest disease of sweet potato, but little is currently known about potential biocontrol agents for this fungus. Here, we isolated several microorganisms from the tuberous roots and shoots of field-grown sweet potato plants, and analyzed their ribosomal RNA gene sequences. The microorganisms belonging to the genus Pantoea made up a major portion of the microbes residing within the sweet potato plants, and fluorescence microscopy showed these microbes colonized the intercellular spaces of the vascular tissue in the sweet potato stems. Four P. dispersa strains strongly inhibited C. fimbriata mycelium growth and spore germination, and altered the morphology of the fungal hyphae. The detection of dead C. fimbriata cells using Evans blue staining suggested that these P. dispersa strains have fungicidal rather than fungistatic activity. Furthermore, P. dispersa strains significantly inhibited C. fimbriata growth on the leaves and tuberous roots of a susceptible sweet potato cultivar (“Yulmi”). These findings suggest that P. dispersa strains could inhibit black rot in sweet potato plants, highlighting their potential as biocontrol agents.

scholarly journals Volatile DMNT systemically induces jasmonate-independent direct anti-herbivore defense in leaves of sweet potato (Ipomoea batatas) plants

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Anja K. Meents ◽  
Shi-Peng Chen ◽  
Michael Reichelt ◽  
Hsueh-Han Lu ◽  
Stefan Bartram ◽  
...  
Keyword(s):  
Sweet Potato ◽  
Plant Volatiles ◽  
Ipomoea Batatas ◽  
Inhibitor Activity ◽  
Systemic Induction ◽  
Plant Communication ◽  
Potato Plants ◽  
Volatile Organic ◽  
Sweet Potato Leaves ◽  
Plant Plant

AbstractPlants perceive and respond to volatile signals in their environment. Herbivore-infested plants release volatile organic compounds (VOCs) which can initiate systemic defense reactions within the plant and contribute to plant-plant communication. Here, for Ipomoea batatas (sweet potato) leaves we show that among various herbivory-induced plant volatiles, (E)-4,8–dimethyl–1,3,7-nonatriene (DMNT) had the highest abundance of all emitted compounds. This homoterpene was found being sufficient for a volatile-mediated systemic induction of defensive Sporamin protease inhibitor activity in neighboring sweet potato plants. The systemic induction is jasmonate independent and does not need any priming-related challenge. Induced emission and responsiveness to DMNT is restricted to a herbivory-resistant cultivar (Tainong 57), while a susceptible cultivar, Tainong 66, neither emitted amounts comparable to Tainong 57, nor showed reaction to DMNT. This is consistent with the finding that Spodoptera larvae feeding on DMNT-exposed cultivars gain significantly less weight on Tainong 57 compared to Tainong 66. Our results indicate a highly specific, single volatile-mediated plant-plant communication in sweet potato.

scholarly journals USING NATURAL LIGHT ON MICROPROPAGATION OF SWEET POTATO ( Ipomoea batatas L. ) IN AREA OF HO CHI MINH CITY

2012 ◽  
Vol 15 (3) ◽  
pp. 36-46
Author(s):  
Giap Dang Do ◽  
Hien Thi Dieu Huynh ◽  
The Danh Tran ◽  
Tuan Trong Tran
Keyword(s):  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Natural Light ◽  
Ex Vitro ◽  
Ambient Conditions ◽  
Potato Plants ◽  
Standard Culture ◽  
Survival And Growth ◽  
Better Than

Plantlets of sweet potato ( Ipomoea batatas L. ) were cultured in vitro under three different ambient conditions including a standard culture room - PS, a culture room inside a glasshouse with natural light but controlled temperature - TH, and a standard glasshouse with natural light (natural fluctuations of temperature) - NP. Plantlets from three treatments were compared in terms of pathogen rate, growth, survival plant at the end of the in vitro stage and at the ex vitro acclimatization. This result showed that, after 28 days of culture, sweet potato plants were cultured in vitro TH conditions have reduced entirely due to susceptibility to fungal disease causing outside air. After 14 days of ex vitro acclimatization, plants originally grow in vitro under the TH condition had ability to adapt about field survival and growth rates better than the other two treatments.

scholarly journals INVENTARISASI DAN KARAKTERISASI PLASMA NUTFAH PERTANAMAN UBI JALAR (Ipomoea batatas L.) DI PULAU LOMBOK

2020 ◽  
Vol 8 (1) ◽  
pp. 136
Author(s):  
Sumarjan Sumarjan ◽  
Lestari Ujianto ◽  
Agung Bagus Darma
Keyword(s):  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Food Sources ◽  
Sweet Potatoes ◽  
Local Varieties ◽  
Potato Plants ◽  
Potato Germplasm ◽  
High Level ◽  
Descriptive Method ◽  
Lombok Island

Lombok Island as an area that still has a high level of food insecurity is deemed necessary to develop tuber crops such as sweet potatoes, this is to support the diversity of existing food sources. This study aims to determine: 1) sweet potato germplasm cultivated on Lombok Island; and 2) the characteristics of sweet potato germplasm on Lombok Island. This research uses a descriptive method. Inventarization is carried out by the exploration method, and using cluster analysis which is then displayed in the form of a phenogram. The results showed: 1) obtained 17 accessions of sweet potato plants spread in 4 districts of Lombok Island; 2) the accessions found consisted of accessions of Sweet Potato KLU, Honey KLU, Purple 04 KLU, Orange Lobar, White Lobar, Purple 01 Lobar, Purple 02 Lobar, Purple 03 Lobar, Ornamental Attic, Attic Yellow, Attic White, Purple 01 Attic, Purple 02 Attic, Honey Lotim, Sokan Lotim, Purple 05 Lotim, and Purple 06 Lotim; 3) the cause of the differences in the characteristics of all observed accessions is genetic factors that are supported by different growing environmental conditions. In the accession of Sweet Potato Beduk KLU and Sokan Lotim are local varieties of sweet potato from Lombok Island, so it needs to be developed to maintain local superior sweet potato varieties from Lombok Island.

scholarly journals Copper and zinc interactions: morphophysiological responses in sweet potato plants (Ipomoea batatas L.)

2017 ◽  
Vol 72 (1) ◽  
pp. 142-149 ◽  
Author(s):  
Cristina Copstein Cuchiara ◽  
Cristina Ferreira Larré ◽  
José Antonio Peters
Keyword(s):  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Potato Plants ◽  
Copper And Zinc

scholarly journals Chicken Manure: An Alternative in Increasing Production of Sweet Potato (Ipomoea batatas)

2020 ◽  
Vol 12 (10) ◽  
pp. 141
Author(s):  
Carla Coelho Ferreira ◽  
Pamela Karoline Correia Brunner ◽  
Ana Cecília Nina Lobato ◽  
Tassia Michelli Nogueira Negreiros ◽  
Daniel Oscar Pereira Soares ◽  
...  
Keyword(s):  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Clayey Soil ◽  
Low Cost ◽  
Chicken Manure ◽  
Sweet Potatoes ◽  
Family Farmers ◽  
Tuberous Roots ◽  
Different Doses ◽  
Final Consumer

Chicken manure is accessible to family farmers, is produced in large volumes, and has a low cost. Therefore, it can be an alternative to increase the productivity of sweet potatoes (Ipomoea batatas), which is a culture of socioeconomic importance. The objective of the study was to evaluate the productivity of sweet potatoes under different doses of chicken manure, with and without liming, comparing to the use of chemical fertilizer NPK, in very clayey soil, from the perspective of economic efficiency. The experiment was conducted in the field from September 2019 to March 2020 in Manaus, Amazonas, Brazil. The experimental design was in randomized blocks with four replications, in a split-plot scheme 2 × 5 + 1 (presence or absence of liming; five doses of chicken manure; and NPK, respectively. The evaluated parameters were: total and commercial productivity; number of total and commercial tuberous roots; harvest index; individual fresh mass, length, and diameter of tuberous roots. The effect of chicken manure was not influenced by the liming and there are no differences in agronomic values related to NPK. The dose of chicken manure that results in maximum production of the queen sweet potato variety is approximately 13 t ha-1, producing 25.2 t ha-1, while the resulting dose in maximum profit is approximately 12 t ha-1 with a production of the 25.1 t ha-1. The selling production directly to the final consumer increased profit by approximately 57.3%. Purchasing the input directly from the manufacturer reduced costs by approximately 74.5%. The use of chicken manure has a greater economic advantage compared to NPK in very clayey soil.

scholarly journals Physiological responses of sweet potato (Ipomoea batatas L.) plants due to different copper concentrations

2015 ◽  
Vol 36 (6Supl2) ◽  
pp. 4165
Author(s):  
Cristina Copstein Cuchiara ◽  
Mara Cíntia Winhelmann ◽  
Cristina Ferreira Larré ◽  
Juliana Aparecida Fernando ◽  
Eugenia Jacira Bolacel Braga ◽  
...  
Keyword(s):  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Growth Parameters ◽  
Physiological Responses ◽  
Antioxidant Metabolism ◽  
Potato Plants ◽  
Low Concentrations ◽  
Mineral Profile ◽  
Increased Activity ◽  
Complete Nutrient Solution

At low concentrations, Cu is considered as an essential micronutrient for plants and as a constituent and activator of several enzymes. However, when in excess, Cu can negatively affect plant growth and metabolism. Therefore, the aim of this study was to evaluate physiological responses of sweet potato plants at different Cu concentrations by measuring morphological parameters, antioxidant metabolism, stomatal characteristics, and mineral profile. For this purpose, sweet potato plants were grown hydroponically in complete nutrient solution for six days. Then, the plants were transferred to solutions containing different Cu concentrations, 0.041 (control), 0.082, and 0.164 mM, and maintained for nine days. The main effect of increased Cu concentration was observed in the roots. The sweet potato plants grown in 0.082 mM Cu solution showed increased activity of antioxidant enzymes and no changes in growth parameters. However, at a concentration of 0.164 mM, Cu was transported from the roots to the shoots. This concentration altered morpho-anatomical characteristics and activated the antioxidant system because of the stress generated by excess Cu. On the basis of the results, it can be concluded that the sweet potato plants were able to tolerate Cu toxicity until 0.082 mM.

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