scholarly journals Soil Type and Wetness Affect Tint of Peanut (Arachis hypogaea L.) Pod Shell

2010 ◽  
Vol 37 (2) ◽  
pp. 144-150 ◽  
Author(s):  
I. Ginzberg ◽  
A. Tubi ◽  
O. Buchshtab ◽  
S. Wininger ◽  
B. Ben-Dor ◽  
...  
Keyword(s):  
Arachis Hypogaea ◽  
Water Soluble ◽  
Shell Color ◽  
Development Zone ◽  
Soil Extracts ◽  
Bright Yellow ◽  
Arachis Hypogaea L ◽  
Overhead Irrigation ◽  
Pod Development ◽  
Soil Wetness

Abstract Peanut (Arachis hypogaea L.) is a globally important legume crop that is utilized fresh, roasted, or pressed for oil products. A substantial market exists for in-shell peanuts, and shell color is an important factor affecting price — consumers favor bright yellow. Field observations have indicated that the type of soil in which the peanut pods develop can affect shell color and tint. Field and greenhouse experiments in which plants were grown in sandy soil while pods were allowed to develop in various tested soils verified this primary observation: sandy soils resulted in bright-yellow shells, dark soils (such as peat) resulted in a darker shell color, while loess soils resulted in intermediate shell colors. Incubation of peanut pods in saturated soil solutions or filtered soil extracts inferred the existence of two opposing processes that may affect shell color: adherence of water-soluble soil components to the shell surface, and the washing-off of shell material from this surface. Overhead irrigation with a reduced amount of water or watering with a subsurface drip system concealed at a depth of 25 cm resulted in brighter shell colors than applying the normal amount of water by overhead irrigation. These data suggest that reducing soil wetness in the pod-development zone may increase shell brightness. Field experiments also indicating that final shell color is determined towards the end of pod development, suggesting that soil wetness in the pod-development zone should be controlled during at least the last 4 weeks of growth, to maintain a low level of wetness.

scholarly journals Genome-Wide Analysis of the Growth-Regulating Factor Family in Peanut (Arachis hypogaea L.)

2019 ◽  
Vol 20 (17) ◽  
pp. 4120 ◽  
Author(s):  
Kunkun Zhao ◽  
Ke Li ◽  
Longlong Ning ◽  
Jialin He ◽  
Xingli Ma ◽  
...  
Keyword(s):  
Arachis Hypogaea ◽  
Positive Response ◽  
Rapid Expansion ◽  
Genome Wide ◽  
Arachis Hypogaea L ◽  
Pod Development ◽  
Expansion Stage ◽  
Cultivated Species ◽  
The Difference ◽  
Transcriptome Expression

Growth-regulating factors (GRFs) are plant-specific transcription factors that perform important functions in plant growth and development. Herein, we identified and characterised 24 AhGRF genes in peanut (Arachis hypogaea). AhGRF family genes were divided into six classes with OLQ and WRC domains. Transcriptome expression profile showed that more AhGRF genes, such as AhGRF5a gene, were at higher expression during pod development in Arachis monticola than cultivated species, especially at the pod rapid-expansion stage. AhGRF5a and AhGRF5b genes expressed at higher levels in pods than roots, leaves and stems tissues, existing in the difference between Arachis monticola and H8107. Exogenous GA3 application can activate AhGRF5a and AhGRF5b genes and H8107 line showed more positive response than Arachis monticola species. These results imply that these two AhGRF genes may be active during the peanut pod development.

Influence of Application Variables on Efficacy of Manganese-Containing Fertilizers Applied to Peanut (Arachis hypogaea L.)

2012 ◽  
Vol 39 (1) ◽  
pp. 1-8 ◽  
Author(s):  
David L. Jordan ◽  
Sarah H. Lancaster ◽  
James E. Lanier ◽  
P. Dewayne Johnson ◽  
Joshua B. Beam ◽  
...  
Keyword(s):  
North Carolina ◽  
Arachis Hypogaea ◽  
Essential Element ◽  
Liquid Solution ◽  
Ambrosia Artemisiifolia ◽  
Water Soluble ◽  
Manganese Sulfate ◽  
Ipomoea Purpurea ◽  
Arachis Hypogaea L ◽  
Lambda Cyhalothrin

Abstract Several formulations of the essential element manganese (Mn) are commercially available for application to peanut (Arachis hypogaea L.). Research was conducted in North Carolina to compare accumulation of Mn in peanut leaves, stems, and pods following application of water soluble manganese sulfate including 17.5% Mn (Techmangum® or Man-Gro DF®) and liquid Mn formulations including 5.0% Mn (Manganese Xtra©) or 8% Mn (Nutrisol 8% Manganese™). Experiments were also conducted to determine the influence of herbicides, adjuvants, and selected fungicide and insecticide combinations on Mn accumulation in peanut leaves. A second experiment was conducted to determine if efficacy of clethodim, imazapic, imazethapyr, lactofen, sethoxydim, and 2,4-DB was affected by Mn formulations when applied in mixture. Experiments were also conducted to determine the effect of Mn on efficacy of the fungicides azoxystrobin, chlorothalonil, pyraclostrobin, and tebuconazole. More Mn was found in leaves when dry formulations of Mn were applied compared to liquid formulations, reflecting the higher amount of actual Mn delivered per ha based on manufacturer recommendations of these products. Accumulation of Mn was higher when Mn was applied with the herbicides clethodim, imazapic, and lactofen compared with Mn alone or Mn plus 2,4-DB. Accumulation of Mn was similar for Mn alone or most combinations of Mn with fungicides and insecticides. Manganese did not affect corn (Zea mays L.) control by clethodim or sethoxydim; large crabgrass [Digitaria sanguinalis (L.) Scop.] control by clethodim; Palmer amaranth [Amaranthus palmeri (S.) Wats.] control by imazethapyr; sicklepod [Senna obtusifolia (L.) Irwin and Barneby] control by imazapic, imazethapyr, or 2,4-DB; or tall morningglory [Ipomoea purpurea (L.) Roth] control by imazapic. In contrast, common ragweed (Ambrosia artemisiifolia L.) control by lactofen was reduced by dry manganese but not the 8% liquid solution. Peanut canopy defoliation was similar when the fungicides azoxystrobin, chlorothalonil, pyraclostrobin, or tebuconazole individually were compared alone, with Mn, or Mn plus the insecticide lambda cyhalothrin.

Pod development of groundnut (Arachis hypogaea L.) in solution culture

1993 ◽  
Vol 155-156 (1) ◽  
pp. 355-358 ◽  
Author(s):  
G. E. Zharare ◽  
C. J. Asher ◽  
F. P. C. Blamey ◽  
P. J. Dart
Keyword(s):  
Arachis Hypogaea ◽  
Solution Culture ◽  
Arachis Hypogaea L ◽  
Pod Development

scholarly journals A Recirculating Hydroponic System for Studying Peanut (Arachis hypogaea L.)

HortScience ◽  
1998 ◽  
Vol 33 (4) ◽  
pp. 650-651 ◽  
Author(s):  
C.L. Mackowiak ◽  
R.M. Wheeler ◽  
G.W. Stutte ◽  
N.C. Yorio ◽  
L.M. Ruffe
Keyword(s):  
Arachis Hypogaea ◽  
Nutrient Solution ◽  
Root Zone ◽  
Dry Mass ◽  
Peanut Seed ◽  
Hydroponic System ◽  
Arachis Hypogaea L ◽  
Pod Development ◽  
Peanut Production ◽  
Seed Yields

Peanut (Arachis hypogaea L.) plants were grown hydroponically, using continuously recirculating nutrient solution. Two culture tray designs were tested; one tray design used only nutrient solution, while the other used a sphagnum-filled pod development compartment just beneath the cover and above the nutrient solution. Both trays were fitted with slotted covers to allow developing gynophores to reach the root zone. Peanut seed yields averaged 350 g·m-2 dry mass, regardless of tray design, suggesting that substrate is not required for hydroponic peanut production.

Sign in / Sign up

Export Citation Format

Share Document