scholarly journals Genetic Parameters of Agronomic Traits in Sweetpotato Accessions

2020 ◽  
Vol 12 (2) ◽  
pp. 240-246
Author(s):  
Wiwit Rahajeng ◽  
Joko Restuono ◽  
Febria Cahya Indriani ◽  
Purwono Purwono
Keyword(s):  
Sweet Potato ◽  
Genetic Parameters ◽  
Agronomic Traits ◽  
Block Design ◽  
Germplasm Collection ◽  
Research Station ◽  
Dry Matter Content ◽  
Root Yield ◽  
Wide Range ◽  
Significant Difference

Germplasm as a source of genes in sweetpotato breeding requires information on appearance and genetic parameters. The objectives of this research were to determine the performance and genetic parameters of sweet potato accessions. The research was conducted at Kendalpayak Research Station, Malang, East Java, Indonesia. The materials used were thirty sweet potato accessions from Indonesian Legumes and Tuber Crops Research Institute (ILETRI) germplasm collection. The research was arranged in a Randomized Block Design (RBD) with two replications. The variables observed included: the vines length, the weight of vines, the number and weight of the saleable root per plot, the number and weight of the non-saleable root per plot, the number and weight of root per plant, the root yield, the harvest index, and the dry matter content. The results of ANOVA showed a significant difference among the tested genotypes in almost all traits observed except on weight of non-saleable root. PCV estimation was higher than GCV estimation for all the observed characters. The weight of the saleable root per plot, the weight of root per plant, and the root yield that showed a wide range of PCV and GCV as well as high broad-sense heritability indicated that these traits had additive gene effect and more reliable for effective selection. The broad GCV in a population is effective for selection to obtain the superior variety.

scholarly journals Evaluation of Promising Sweet potato Clones for Higher Root Yield and Dry Matter Content

2021 ◽  
Vol 9 (1) ◽  
pp. 42-47
Author(s):  
Wiwit Rahajeng ◽  
Joko Restuono ◽  
Febria Cahya Indriani ◽  
Purwono Purwono
Keyword(s):  
Sweet Potato ◽  
Skin Color ◽  
Dry Matter ◽  
Block Design ◽  
Matter Content ◽  
High Yield ◽  
Index Number ◽  
Dry Matter Content ◽  
Root Yield ◽  
Significant Difference

Dry matter content is one of the important characteristics of sweet potatoes in addition to high yield. The aim of this study was to evaluate the performance of promising sweet potato clones for higher root yield and dry matter content. A hundred promising sweet potato clones were evaluated and arranged in randomized block design with two replication. The variables observed included: weight of vine, harvest index, number of root per plot, the weight of root per plot, dry matter content, root yield, root skin color, and flesh color. The analysis of variance showed a significant difference among the tested genotypes in all traits observed. A hundred promising sweet potato clones showed that root yield has varied ranged from 4.88–41.38 t h-1 with an average 20.28 t h-1 and dry matter content ranged from 19.19 – 40.65% with an average 30.47%. Fifteen promising clones of a hundred clones tested had high root yield and dry matter content with varying color flesh.

scholarly journals Adaptation to mid-season drought in a sweetpotato (Ipomoea batatas [L.] Lam) germplasm collection grown in Mozambique

2017 ◽  
Vol 2 (1) ◽  
Author(s):  
Godwill S. Makunde ◽  
Maria I. Andrade ◽  
Jose Ricardo ◽  
Abilio Alvaro ◽  
Joana Menomussanga ◽  
...  
Keyword(s):  
Drought Tolerance ◽  
Harvest Index ◽  
Ipomoea Batatas ◽  
Block Design ◽  
Geometric Mean ◽  
Germplasm Collection ◽  
High Yield ◽  
Research Station ◽  
Storage Root ◽  
Root Yield

AbstractDrought has negative effects on sweetpotato production. Two experiments with two watering treatments (irrigated and water-stressed) were conducted at Umbeluzi Research Station in 2015. The objectives were to (i) determine response of 48 sweetpotato germplasms to mid-season drought, (ii) determine best traits for improvement of storage root yield under mid-season drought and (iii) assess the selection criteria for identifying drought tolerance in sweetpotato germplasms. The irrigated and water- stressed trials received 640 and 400 mm of water, respectively, throughout the season. Water stress was imposed from 30 to 70 days after planting. Each treatment had two replicates arranged in a randomized complete block design. Data collected on storage root and vine yield and derived drought tolerance indices including harvest index were subjected to analysis of variance in R. Sweetpotato germplasms with high storage root yield under mid-season drought were associated with a high harvest index. Harvest index stability and the geometric mean are key to identifying cultivars with high and stable storage root yield under both treatments. MUSGP0646-126, Irene and Ivone combined both low TOL, SSI, HI and high yield storage root yield across the treatments and over seasons. The use of drought and harvest indices is encouraged for selecting improved cultivars for varied production environments and their regular use in accelerated breeding schemes is suggested.

scholarly journals Evaluation of Sweet Potato (Ipomea batata l.) Varieties for Total Storage Root Yield in South and South East Zones of Tigray, Ethiopia

2014 ◽  
Vol 1 (2) ◽  
pp. 74-78
Author(s):  
Birhanu Amare ◽  
Fetien Abay ◽  
Yemane Tsehaye
Keyword(s):  
Sweet Potato ◽  
Analysis Of Variance ◽  
Block Design ◽  
Yield Potential ◽  
Storage Root ◽  
Root Yield ◽  
Significant Difference ◽  
Main Effect ◽  
Total Variability ◽  
Location Interaction

Seven sweet potato varieties (Bellela, Kabode, Kulfo, LO, Temesgen, Tulla and Vitae) were tested in southern and eastern zones of Tigra, Ethiopiay in 2012 to evaluate their total root yield potential.  Randomized complete block design with three replications was used for the experiment Yield data was analyzed using combined ordinary analysis of variance and the additive main effect and multiplication interaction effect model (AMMI). The combined analysis of variance across locations showed significant variation among genotypes, locations and the genotypes by locations interaction for the total storage root yield (t/ha). Based on this, the superior mean total root yield (26.82 t/ha) was obtained at Kukufto testing location while the inferior (13.45 t/ha) was at Rarhe. Similarly, among the genotypes, LO gave the highest mean total root yield (30.9 t/ha), while bellela gave the lowest (7.78 t/ha). The AMMI analysis for the total storage root yield also showed highly significant difference for genotypes, locations and the genotypes by locations interaction components The contribution of genotype, location and genotype by location interaction to the total variation in root yield was about 54.1%, 21.4% and 19.4%, respectively. The genotype main effect contributed more to the total variability indicating that the variation was largely due to the inheritance of genotype effect. The genotype by location interaction was further partitioned using AMMI model and the first two principal components explained 100% of the total variability. The model captured 83.4 % of the interaction sum of squares with the first Interaction Principle Component Axis (IPCA) (in 58.3% of the interaction degrees of freedom) and 16.6% by the second IPCA axis (with 41.7% of the G x E d.f). AMMI biplot view of this study identified kukufto as best testing location and LO, Tulla and Kulfo as best genotypes for south and south east zones of Tigray region.  

Nitrogen Requirement of Potato for Eastern Indo-Gangatic Plain of India

2020 ◽  
Vol 7 (03) ◽  
Author(s):  
S. K. YADAV ◽  
R. K. SINGH ◽  
V. K. DUA ◽  
S SINGH ◽  
SARALA YADAV ◽  
...  
Keyword(s):  
Tuber Yield ◽  
Potato Crop ◽  
Block Design ◽  
Nitrogen Level ◽  
Cost Ratio ◽  
Research Station ◽  
Net Benefit ◽  
Marketable Tuber ◽  
Benefit Cost Ratio ◽  
Significant Difference

A field experiment was carried out during 2015-16 and 2016-17 at ICAR-Central Potato Research Station, Patna, Bihar, in randomized block design with four replications with objective to quantity the optimum requirement of nitrogen to potato crop. Significantly the highest plant height was recorded with nitrogen level of 300 kg/ha. Distributions of the smallest size of tuber yield of potato were decreasing with increasing the level of nitrogen. There was about 26.0% more yield of the smallest size tuber of potato was recorded with zero nitrogen as compare to the highest level of nitrogen i.e. 300 kg/ha. Increasing the nitrogen over the level of 150 to 225 kg per hectare, increasing the yield of tuber gradually slower rate than nitrogen level from 0 to 150 kg/ha. Total and marketable tuber yield of potato were increasing significantly with increasing level of nitrogen up to 150 kg/ha. There was no significant difference in marketable tuber yield was found for nitrogen level between 150 and 225 kg/ha. Highest (1.66) net benefit cost ratio was also recorded with level of nitrogen @ 150 kg/ha in potato. Hence, application of nitrogen @ 150 kg/ha was found statistically and economically more beneficial for potato cultivation in Eastern Indo-Gangatic plain of India.

scholarly journals EFFECT OF HARDWOOD BARK MULCH ON THE WINTER SURVIVAL OF EIGHT CULTIVARS OF GARDEN CHRYSANTHEMUMS

HortScience ◽  
1990 ◽  
Vol 25 (9) ◽  
pp. 1097c-1097
Author(s):  
William F. Hayslett ◽  
P. R. Thangudu ◽  
Sabrina Shaw
Keyword(s):  
Field Study ◽  
Block Design ◽  
Winter Survival ◽  
Research Station ◽  
Percent Survival ◽  
Flowering Season ◽  
Significant Difference ◽  
Randomized Complete Block Design ◽  
Cold Hardy

A field study was conducted at Tennessee State University's research station to evaluate the effect of hardwood bark mulch on the winter survival of garden mums. A randomized complete block design was used. Cultivars used were adorn, encore, grandchild, jackpot, legend, minnautumn, minnwhite and triump. At the end of the flowering season the tops were removed leaving a four inch stubble in the mulch. The number of mum plants that resumed growth the following spring were counted for each cultivar. There was a difference in the winter survival of the different cultivars as well as a significant difference in the mulch treated and the control. Grandchild and jackpot were most cold hardy followed by encore, minnwhite, minnautumn, triump, legend, and adorn. Grandchild and jackpot with four inches of hardwood bark mulch had an 88 percent survival while the control had a 44 percent survival. Adorn. had a 51 percent survival with four inches of mulch and a 20 percent survival in the control. This data shows that hardwood bark mulch holds a great potential for providing excellent winter protection for garden mums.

scholarly journals Agronomic traits and chemical composition of single hybrids of sweet corn

2011 ◽  
Vol 29 (4) ◽  
pp. 531-536 ◽  
Author(s):  
Angela Kwiatkowski ◽  
Edmar Clemente ◽  
Carlos Alberto Scapim
Keyword(s):  
Chemical Composition ◽  
Crop Yield ◽  
Combining Ability ◽  
Grain Quality ◽  
Sweet Corn ◽  
Agronomic Traits ◽  
Block Design ◽  
Research Station ◽  
Randomized Block Design ◽  
Fixed Model

In Brazil, the greengrocery market of sweet corn has been expanding along the country. In contrast, there have been few agri-industries canning sweet corn (Zea mays) because of the lack of cultivars with agronomic characteristics proper to industrial purposes. The purpose of this study was to evaluate the general combining ability (GCA) of seven inbred lines of sweet corn, and the specific combining ability (SCA) of their hybrid combinations based on their agronomic traits, and the chemical composition of the grain. In the growing season 2006/2007, twenty-one single hybrids were evaluated in the Iguatemi Research Station, Maringá County, Northwestern Paraná, in Brazil using a complete randomized block design with four replications. Data were subjected to the analysis of variance and the genotypes were clustered by the Scott-Knott test. We estimated the GCA and SCA effects using the Griffing's method IV with the fixed model for plant height (PH), height of ear (EH), dehusked ears yield (DEY), reducing (RS) and total sugars (TS), starch (ST), proteins (PTN), ether extract (EE) and fibers (FB). The inbred line L4, which was originated from the 'Doce de Cuba', had the best GCA for crop yield and grain quality and therefore should be used in the next hybrid combinations. The hybrids L4xL5 and L3xL7 were the most promising with regard to crop yield and grain quality.

scholarly journals Yield and soil insect resistance in sweet potato clones

2019 ◽  
Vol 35 (6) ◽  
Author(s):  
Daiane da Silva Nóbrega ◽  
José Ricardo Peixoto ◽  
Michelle Souza Vilela ◽  
Anne Kelly da Silva Nóbrega ◽  
Elaine Caetano Santos ◽  
...  
Keyword(s):  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Starch Content ◽  
Block Design ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Soil Conditions ◽  
Root Yield ◽  
Pests And Diseases ◽  
Soil Insects

Sweet potato (Ipomoea batatas) is a rustic horticultural crop with high production potential. However, the crop is susceptible to many pests and diseases. The objective of this study was to evaluate 10 genotypes of sweet potato regarding their yield and resistance to soil insects, under Brazilian cerrado soil conditions. Genotypes were selected from the Sweet Potato Germplasm Bank of Embrapa Hortaliças. The experiment was conducted at Água Limpa Farm, belonging to University of Brasilia (UnB), and consisted of a randomized block design, with 10 treatments (genotypes), 10 plants per plot, and four replications. The following traits were analyzed: number of perforations per root, incidence of roots injured by insects, plant resistance degree, root shape, total and marketable root yields, root peel color, root pulp color, pulp total soluble solids, pulp titratable acidity, pulp TSS/TA ratio, pulp moisture, and pulp starch yield. Genotype CNPH 53 (26.78 t ha-1) presented total root yield greater than the commercial variety Brazlândia Rosada (17.54 t ha-1). Genotype Santa Sofia (11.77 t ha-1) and Brazlândia (13.5 t ha-1) had similar marketable root yields. CNPH 53 showed the best agronomic performance, exhibiting moderate susceptibility to soil insects and root shape meeting the market standards. It also had low pulp TA (2.53%); high pulp TSS (12.25 °Brix) and pulp TSS/AT ratio (4.24); pulp moisture content close to 70%; and the highest pulp starch content (11.98%). The traits number of perforations per root, root shape, and pulp TA presented heritability values close to 70%. Marketable root yield, pulp moisture, and pulp starch content demonstrated heritability values greater than 90% and CVG/CVE greater than 1.

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 Genetics and expected selection gain for growth traits in Eugenia dysenterica DC. populations

Bragantia ◽  
2009 ◽  
Vol 68 (3) ◽  
pp. 629-637 ◽  
Author(s):  
Ananda Virginia de Aguiar ◽  
Roland Vencovsky ◽  
Lázaro José Chaves ◽  
Mara Fernandes Moura ◽  
Lizz Kezzy de Morais
Keyword(s):  
Genetic Variation ◽  
Genetic Parameters ◽  
Growth Traits ◽  
Block Design ◽  
Genetic Material ◽  
Germplasm Collection ◽  
Seed Orchard ◽  
Seedling Seed Orchard ◽  
Randomized Block Design ◽  
Eugenia Dysenterica

The objective of this study was to estimate genetic parameters of quantitative traits in a living germplasm collection of Eugenia dysenterica. The genetic material consisted of 110 progenies derived from 10 natural Eugenia dysenterica subpopulations sampled in the southeastern region of the state of Goiás. The experiment was established in a complete randomized block design, with 110 treatments, four replications and one tree per plot. The study variables were total height, stem diameter and respective growth rates. After the analysis of variance some genetic parameters were estimated. The levels of genetic variation in the collection were high and the highest proportion was found within subpopulations. Highest coefficients of heritability and genetic variation were observed in subpopulations from the counties Catalão, Três Ranchos, Cristalina and Senador Canedo. Considering the promising expected progress for growth traits, this collection can be converted into an unrogued seedling seed orchard, aiming the production of improved seed.

scholarly journals Morpho-agronomic characterization of sweet potato germplasm

2017 ◽  
Vol 35 (4) ◽  
pp. 534-541 ◽  
Author(s):  
Rodrigo P Alves ◽  
Arie F Blank ◽  
Alisson Marcel S Oliveira ◽  
Aléa Dayane D Santana ◽  
Vanderson S Pinto ◽  
...  
Keyword(s):  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Agronomic Traits ◽  
Phenotypic Variability ◽  
Block Design ◽  
Leaf Shape ◽  
Dry Mass ◽  
Good Prospect ◽  
Aboveground Part ◽  
Potato Germplasm

ABSTRACT Sweet potato (Ipomoea batatas) spreads mainly by vegetative propagation, and therefore this vegetable may have duplicate accessions in germplasm banks. The authors aimed to characterize morpho-agronomically the sweet potato germplasm from the Active Germplasm Bank (AGB) of Universidade Federal de Sergipe (UFS).The experiment was carried out at the Research Farm “Campus Rural da UFS”. The experimental design was a randomized block design, testing 73 sweet potato accessions with two replicates and four plants per plot. Morpho-agronomic traits of aboveground part and roots were evaluated. We observed that the leaf lobe type, the number of lobes per leaf, shape of central lobe, and general leaf shape were traits which provided the most variability among the accessions. For damage caused by soil insects, 52 accessions showed tolerance. The accessions presented a range from 0.33 to 2.71 t/ha for dry mass of aboveground part and from 1.20 to 10.89 t/ha for the total productivity of the roots. The high phenotypic variability of this crop shows good prospect for breeding programs.

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