Variasi Morfologi Ubi Jalar Lokal Asal Dataran Tinggi Minyambouw dan Anggi

Agrotek ◽  
2018 ◽  
Vol 2 (3) ◽  
Author(s):  
Dwiana Wasgito Purnomo ◽  
Charlie D. Heatubun ◽  
Vika Misiro ◽  
Yohanis Amos Mustamu ◽  
Amisnaipa Amisnaipa
Keyword(s):  
Sweet Potato ◽  
Storage Root ◽  
Characteristic Morphology ◽  
Leaf Colour ◽  
Immature Leaf

Sweet potato is superior commodity of Papua because consumed as special food by society in the middle mountain of Papua. Therefore, sweet potato has vital value in economical, social and culture. In the highland Minyambouw and Anggi have been done exploration and characteristic morphology which is observed among other storage root, leaf and petiole. Result of research exploration and characterization are found around 18 local clons which consist of 8 clons in highland of Minyambouw and 10 clons in highland of Anggi. Clon of Simpengey has special characteristic of the primary colour of its storage root skin is brownish orange, the primary colour of its storage root flesh in crem and secondary colour its storage root is white. Clon of syeb Nntung Ninggos has characteristic among other storage root shape is elliptic, storage root skin primary colour is yellow and the most of the immature leaf colour is purple. Morphology can be proved that only 11 clone groups of sweet potato in the both area.

Response mechanism of sweet potato storage root formation and bulking to soil compaction and its relationship with yield

2019 ◽  
Vol 45 (5) ◽  
pp. 755
Author(s):  
Wen-Qing SHI ◽  
Bin-Bin ZHANG ◽  
Hong-Juan LIU ◽  
Qing-Xin ZHAO ◽  
Chun-Yu SHI ◽  
...  
Keyword(s):  
Sweet Potato ◽  
Soil Compaction ◽  
Root Formation ◽  
Potato Storage ◽  
Storage Root ◽  
Response Mechanism

scholarly journals Potassium Fertilization Stimulates Sucrose-to-Starch Conversion and Root Formation in Sweet Potato (Ipomoea batatas (L.) Lam.)

2021 ◽  
Vol 22 (9) ◽  
pp. 4826
Author(s):  
Yang Gao ◽  
Zhonghou Tang ◽  
Houqiang Xia ◽  
Minfei Sheng ◽  
Ming Liu ◽  
...  
Keyword(s):  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Intercellular Co2 Concentration ◽  
Biomass Accumulation ◽  
Starch Accumulation ◽  
Storage Root ◽  
Root Yield ◽  
Starch Conversion ◽  
And Storage ◽  
Low K

A field experiment was established to study sweet potato growth, starch dynamic accumulation, key enzymes and gene transcription in the sucrose-to-starch conversion and their relationships under six K2O rates using Ningzishu 1 (sensitive to low-K) and Xushu 32 (tolerant to low-K). The results indicated that K application significantly improved the biomass accumulation of plant and storage root, although treatments at high levels of K, i.e., 300–375 kg K2O ha−1, significantly decreased plant biomass and storage root yield. Compared with the no-K treatment, K application enhanced the biomass accumulation of plant and storage root by 3–47% and 13–45%, respectively, through promoting the biomass accumulation rate. Additionally, K application also enhanced the photosynthetic capacity of sweet potato. In this study, low stomatal conductance and net photosynthetic rate (Pn) accompanied with decreased intercellular CO2 concentration were observed in the no-K treatment at 35 DAT, indicating that Pn was reduced mainly due to stomatal limitation; at 55 DAT, reduced Pn in the no-K treatment was caused by non-stomatal factors. Compared with the no-K treatment, the content of sucrose, amylose and amylopectin decreased by 9–34%, 9–23% and 6–19%, respectively, but starch accumulation increased by 11–21% under K supply. The activities of sucrose synthetase (SuSy), adenosine-diphosphate-glucose pyrophosphorylase (AGPase), starch synthase (SSS) and the transcription of Susy, AGP, SSS34 and SSS67 were enhanced by K application and had positive relationships with starch accumulation. Therefore, K application promoted starch accumulation and storage root yield through regulating the activities and genes transcription of SuSy, AGPase and SSS in the sucrose-to-starch conversion.

scholarly journals Morphoagronomic characterization of sweet potato accessions from the germplasm bank of Embrapa hortaliças

2019 ◽  
Vol 35 (6) ◽  
Author(s):  
Rosa maria de Deus De Sousa ◽  
José Ricardo Peixoto ◽  
Geovani Bernardo Amaro ◽  
Michelle Sousa Vilela ◽  
Paula Andrea Osorio Carmona
Keyword(s):  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Agronomic Traits ◽  
Block Design ◽  
Branch Length ◽  
Leaf Color ◽  
Germplasm Bank ◽  
Immature Leaf ◽  
Productive Potential ◽  
Branch Weight

Studies on the determination of genetic divergence among genotypes are important tools in breeding programs, contributing to the identification of parents with considerable productive potential. However, little is known about the combinatorial capacity of sweet potato (Ipomoea batatas) accessions and its adaptation to the different regions of Brazil. The objective of this study was to evaluate the morpho-agronomic traits from 102 sweet potato accessions from the Germplasm Bank of Embrapa Hortaliças. The experiment was laid out as an augmented block design comprised of 102 treatments. Nineteen above ground traits were measured using descriptors for the respective parts. Estimated values of broad sense heritability were high for the traits mean branch length (95.75%), immature leaf color (85.06%), and predominant branch  color (90.57%). Coefficients of environmental variation were below 30.00% for all variables, except for branch weight (51.62%). The 102 clones analyzed presented broad genetic variability for the different traits evaluated, especially for branch weight, and branch length, and mature leaf color.

scholarly journals The use of humic acid urea fertilizer for increasing yield and utilization of nitrogen in sweet potato  

2017 ◽  
Author(s):  
Chen Xiaoguang ◽  
Kou Meng ◽  
Tang Zhonghou ◽  
Zhang Aijun ◽  
Li Hongmin
Keyword(s):  
Humic Acid ◽  
Sweet Potato ◽  
Production Efficiency ◽  
Potato Production ◽  
Utilization Rate ◽  
Nitrogen Accumulation ◽  
Storage Root ◽  
Nitrogen Absorption ◽  
Storage Roots ◽  
Urea Fertilizer

Humic acid urea fertilizer (HA-N) is a new type of slow-release nitrogenous fertilizer that can enhance utilization rate of urea, and consequently increases crop yield. However, there were few researches about the effect of HA-N on the nitrogen absorption and utilization in sweet potato production. Hence, the effect of HA-N on nitrogen accumulation and distribution, nitrogen use efficiency (NUE), and yield of sweet potato was studied in the field using the <sup>15</sup>N tracer technique. Results showed that HA-N significantly increased the number of storage roots per plant and the average fresh weight per storage root, as well as the yield increased by 29.6% compared with urea fertilizer. Furthermore, nitrogen accumulation of total plant was higher under the HA-N. In addition, HA-N significantly increased nitrogen production efficiency of fertilizer and nitrogen production efficiency. Results of a <sup>15</sup>N tracer experiment revealed that the percentage of nitrogen absorbed by plant from fertilizer increased from 31.1% to 38.7% and NUE increased from 33.5% to 44.8% with application of HA-N when compared with single N treatment, respectively. HA-N significantly increased sweet potato storage root yield, nitrogen absorption and NUE, as well as it reduced the loss of nitrogen fertilizer.  

scholarly journals Effect of ZnSO4 fertilizer on soil chemical properties, performance and proximate quality of sweet potato in a derived savanna ecology of Nigeria

2018 ◽  
Vol 3 (1) ◽  
pp. 644-651
Author(s):  
A.O. Adekiya ◽  
C.M. Aboyeji ◽  
T.M. Agbede ◽  
O. Dunsin ◽  
O.T.V. Adebiyi
Keyword(s):  
Sweet Potato ◽  
Block Design ◽  
Chemical Properties ◽  
Soil Chemical Properties ◽  
Storage Root ◽  
Root Yield ◽  
The Mean ◽  
The Impact ◽  
And Storage

Abstract Micro-nutrients especially zinc can not only increase the yield of sweet potato but can also improve the quality of tubers. Hence, experiments were carried out in 2015 and 2016 cropping seasons to determine the impact of various levels of ZnSO4 fertilizer on soil chemical properties, foliage and storage root yields and proximate qualities of sweet potato (Ipomoea batatas L.). The experiments consisted of 5 levels (0, 5, 10, 15 and 20 kg ha-1) of ZnSO4 fertilizer. These were arranged in a randomized complete block design and replicated three times. ZnSO4 increased (with the exception of P) soil chemical properties compared with the control. N, K, Ca, Mg and Zn were increased up to the 20 kg ha-1 ZnSO4 level in both years. ZnSO4 reduced P concentrations in soil as the level increased. For sweet potato performance, 5 kg ha-1 ZnSO4 fertilizer had the highest values of foliage yield (vine length and vine weight) and storage root yield. Using the mean of the two years and compared with the control, ZnSO4 fertilizer at 5 kg ha-1 increased storage root yield of sweet potato by 17.4%. On fitting the mean storage root yield data of the two years with a cubic equation, the optimum rate of Zn for sweet potato was found to be 3.9 kg ha-1 to achieve the maximum sweet potato yield. In this study, relative to the control, ZnSO4 fertilizer increased moisture and decreased the fibre contents of sweet potato. There were no consistent patterns of variation between the 5, 10, 15 and 20 kg ha-1 ZnSO4 treatments for proximate qualities except that the highest values of fat, protein, carbohydrate and ash was at 5 kg ha-1 ZnSO4.

Molecular Regulation of Storage Root Formation and Development in Sweet Potato

2014 ◽  
pp. 157-208 ◽  
Author(s):  
V. Ravi ◽  
S.K. Chakrabarti ◽  
T. Makeshkumar ◽  
R. Saravanan
Keyword(s):  
Sweet Potato ◽  
Root Formation ◽  
Molecular Regulation ◽  
Storage Root
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