scholarly journals The Inheritance of Yield Components and Beta Carotene Content in Sweet Potato

2018 ◽  
Vol 10 (2) ◽  
pp. 71
Author(s):  
Heritier Kambale Mbusa ◽  
Kahiu Ngugi ◽  
Florence M. Olubayo ◽  
Benjamin Musembi Kivuva ◽  
James W. Muthomi ◽  
...  
Keyword(s):  
Sweet Potato ◽  
Yield Components ◽  
Dry Matter ◽  
Beta Carotene ◽  
Matter Content ◽  
Yield Potential ◽  
Dry Matter Content ◽  
Root Yield ◽  
Carotene Content ◽  
Root Dry Matter Content

Analysis of the gene action exhibited by an agronomic trait in crop plants is useful in the planning of an effective plant breeding program. This study sought to establish the inheritance variance of root yield components and beta carotene content present in sweet potato clones commonly grown in Kenya. Ten contrasting parents were selected based on their beta carotene content, dry matter content and yield potential. They were planted in pots in the green house at KEPHIS-Muguga, Kenya, where they were grafted into Ipomoea setosa to boost their ability to flower. Five parents were further selected based on their ability to flower under local environmental conditions and crossed in a 5 × 5 half diallel manner. Five parents and ten F1 clones arising from this hybridization were evaluated at KALRO-Kiboko, Kenya during two rainy seasons. The field trials were laid out in a randomized complete block design of three replications. The data were scored for root yield characteristics, beta carotene and root dry matter content. Griffing Method II, Model 1 diallel was used to estimate the general and specific combining ability. Genetic variability for beta carotene and root dry matter content indicated that the two traits were controlled mostly by both additive and dominant gene actions. Heterosis gene effects were found for beta carotene and root dry matter content which would be useful in the improvement of sweet potato productivity.

scholarly journals Agronomic Performance of Kenyan Orange Fleshed Sweet Potato Varieties

2018 ◽  
Vol 7 (2) ◽  
pp. 11 ◽  
Author(s):  
Heritier Mbusa ◽  
Kahiu Ngugi ◽  
Florence Olubayo ◽  
Benjamin Kivuva ◽  
James Muthomi ◽  
...  
Keyword(s):  
Sweet Potato ◽  
Dry Matter ◽  
Beta Carotene ◽  
Matter Content ◽  
Dry Matter Content ◽  
Root Yield ◽  
Carotene Content ◽  
The Mean ◽  
Root Dry Matter Content ◽  
Fresh Root

Sweet potato is one of the most important staple crops in Sub-Sahara Africa because of its supply of carbohydrates, vitamin A and C, fiber, iron, potassium and protein.The objective of this study was to determine phenotypic variation in diverse sweetpotato varieties for marketable roots, fresh root yield, fresh biomass weight, harvest index, beta carotene content and root dry matter content. Twenty five sweet potato genotypes were evaluated at two sites in two seasons in Kenya using a randomized complete block design of three replications. The results indicated that there were highly significantly variations for genotypes and sites for all the traits studied. There were no significant differences for genotype x site x season effects for the traits except for the number of marketable roots and fresh root yield. The mean fresh root was 32.19 t/ha,with the genotype Ininda expressing the highest fresh root yield of 54.79 t/ha. Genotypes, Naspot 13, Ejumula, Kabode, Vitaa and Tio-Joe gave the highest beta carotene content ranging between 11.830 and 10.040 mg/100g; with a mean of 5.384 mg/100g. The mean root dry matter content was 24.84 % with clones Amelia and Melinda showing the highest and lowest root dry matter content of 30.62 and 16.52 % respectively. Ten genotypes including Ininda, Erica, Jane, Naspot 13, Ejumula, Kabode, Vitaa, Tio-Joe, Amelia and Mayai were recommended as potential parents for sweet potato breeding program in Kenya. 

Combining Ability of Sweet Potato [Ipomoea batatas (L.) Lam] Genotypes for Beta Carotene and Dry Matter Content in Southern Guinea Savanna, Nigeria

2021 ◽  
Vol 19 (1) ◽  
pp. 53-61
Author(s):  
M.S Afolabi ◽  
G.O Agbowuro ◽  
A.E Salami ◽  
M.O Akoroda
Keyword(s):  
Vitamin A ◽  
Sweet Potato ◽  
Dry Matter ◽  
Beta Carotene ◽  
Diallel Analysis ◽  
Matter Content ◽  
Dry Matter Content ◽  
Carotene Content ◽  
Guinea Savanna ◽  
Β Carotene

Roots of orange fleshed sweet potato varieties currently available in Nigeria contain high quantities of β-carotene or pro-vitamin A but have high moisture content. These varieties have been found to be a cheap and important remedy for vitamin A deficiency. The cream or white fleshed varieties on the other hand, have sweet taste with high dry matter content, giving a dry texture, a quality trait preferred in Nigeria. The objectives of this study were to examine the quantitative inheritance of important traits in sweet potato by means of a diallel analysis with a view to estimating the GCA and SCA components of genetic variance, and to determine the associated type of gene action controlling β-carotene content and root dry mass. A diallel crosses experiment using six parental sweet potato genotypes crossed in all possible combinations were carried out. Resultant thirty progenies were evaluated for beta carotene (β-carotene) and dry matter content in Landmark University, Omu Aran, Kwara State, Nigeria during the cropping season of 2012 and 2013. The 30 F1 progenies along with their parental lines were planted in the same field trial. The trial was laid out in 6 x 6 triple lattice in two replications. Highly significant (P≤ 0.01) differences were observed among the genotypes for all the tested traits. The average β-carotene content for the progenies was 2.86 (mg/100 g f.w.) while the dry matter content was 31.89%. The cross combination 199024.2 x Excel recorded the highest beta carotene (14.37 mg/100 g f.w) and dry matter content (40.10%), this candidate is therefore suggested for further evaluation. Key words: Diallel analysis, Dry matter, Southern Guinea Savanna, Sweet potato, Vitamin A, β-carotene.

scholarly journals Diallel Analysis of Sweet Potato [Ipomoea batatas (L.) Lam] Genotypes for Combined Beta Carotene and Dry Matter Content in Southern Guinea Savanna, Nigeria

2019 ◽  
pp. 1-9
Author(s):  
M. S. Afolabi ◽  
O. B. Bello ◽  
G. O. Agbowuro ◽  
C. O. Aremu ◽  
M. O. Akoroda
Keyword(s):  
Vitamin A ◽  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Dry Matter ◽  
Vitamin A Deficiency ◽  
Beta Carotene ◽  
Matter Content ◽  
Quality Trait ◽  
Dry Matter Content ◽  
Β Carotene

Roots of orange-fleshed sweet potato varieties currently available in Nigeria contain high quantities of β-carotene or pro-vitamin A but have high moisture content. These varieties have been found to be a cheap and crucially important remedy for vitamin A deficiency. The cream or white-fleshed varieties, on the other hand, have a sweet taste with high dry matter content, giving a dry texture, a quality trait preferred in Nigeria. Development of sweet potato genotypes that can combine these two important quality traits is the objective of this breeding work. A diallel experiment using six parental sweet potato genotypes crossed in all possible combinations were carried out and thirty progenies were evaluated for beta carotene (β-carotene) and dry matter content in Landmark University, Omu Aran, Kwara State, Nigeria. The 30 F1 progenies along with their parental lines were planted in the same field trial. The trial was laid out in 6 x 6 triple lattice in two replications. Highly significant (P≤ 0.01) differences were observed among the genotypes for the traits. The average β-carotene content among the progenies was 2.86 (mg/100g.f.w) while the dry matter cttgontent had a mean value of 31.89%. The cross progenies 199024.2 x Excel had the highest beta carotene (14.37mg/100g.f.w) content with the highest dry matter content (40.10%) and are therefore recommended for further evaluation.

Specific gravity of tubers in relation to productivity of some sweet potato genotypes

1984 ◽  
Vol 103 (2) ◽  
pp. 475-476
Author(s):  
P. K. Ray ◽  
S. Mishra ◽  
S. S. Mishra
Keyword(s):  
Specific Gravity ◽  
Sweet Potato ◽  
Dry Matter ◽  
Germ Plasm ◽  
Matter Content ◽  
Yield Potential ◽  
Dry Matter Content ◽  
Potato Tubers ◽  
Recent Past ◽  
College Of Agriculture

In the recent past, specific gravity of tubers has been considered an easy means of estimating yield potential of sweet potato cultivars (Bryant, 1979) and their quality characters like starch value and dry-matter content (Ishikawa & Sakai, 1973). Bryant (1979) separated sweet potato tubers with low and high specific gravity at planting time by determining whether or not they floated in water, and observed that the floaters gave 20% higher yield than the sinkers. As this simple test claimed to hold promise for selecting higher-yielding sweet potato genotypes, it was decided to scan its usefulness at the College of Agriculture, Dholi, where a large collection of sweet potato germ plasm is being maintained for research needs.

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 Breeding farmer and consumer preferred sweetpotatoes using accelerated breeding scheme and mother–baby trials

2020 ◽  
Vol 5 (1) ◽  
pp. 548-557
Author(s):  
Ernest Baafi ◽  
Mavis Akom ◽  
Adelaide Agyeman ◽  
Cynthia Darko ◽  
Ted Carey
Keyword(s):  
Dry Matter ◽  
Zinc Content ◽  
Beta Carotene ◽  
Matter Content ◽  
Genotypic Differences ◽  
Dry Matter Content ◽  
Storage Root ◽  
Root Yield ◽  
Breeding Scheme ◽  
Superior Genotypes

AbstractIncreased sweetpotato utilization has become an important breeding objective recently, with much emphasis on the development of non-sweet sweetpotatoes for income and food security in Ghana. The objective of this study was to evaluate 26 elite non-sweet and less sweet sweetpotato genotypes with regard to their release as commercial varieties using mother–baby trial. The 26 sweetpotato genotypes were tested multilocational on-farm across five ecozones from 2016 to 2017. These genotypes were selected from accelerated breeding scheme carried out from 2010 to 2013. There were no year-by-ecozone-by-genotype and year-by-ecozone interactions. However, ecozone-by-genotype interaction was significant for storage root dry matter, beta-carotene, iron and zinc content. This implies that the relative performance of the genotypes for storage root yield was stable across locations and years. Genotypic differences were found for all the traits and indicated that selection of superior genotypes across ecozone was possible. Storage root yield ranged from 7 t/ha to 39 t/ha, while dry matter content ranged from 34% to 46%. The storage root cooking quality preference was comparable with farmers’ check. Ten superior genotypes were identified for release as commercial varieties based on their staple-preferred taste, higher storage root yield, higher dry matter content, earliness, resistance to the sweetpotato virus, sweetpotato weevil and Alcidodes.

scholarly journals Evaluation of Yield Potential and Dry Matter Content of Promising Clones of Orange Fleshed Sweetpotato Rich in Betacarotene

2020 ◽  
Vol 2 (2) ◽  
pp. 60-68
Author(s):  
Febria Cahya Indriani ◽  
Joko Restuono ◽  
Wiwit Rahajeng ◽  
Yuliantoro Baliadi ◽  
Made Jana Mejaya
Keyword(s):  
Dry Matter ◽  
Public Awareness ◽  
Block Design ◽  
Beta Carotene ◽  
Matter Content ◽  
Yield Potential ◽  
High Yield ◽  
Dry Matter Content ◽  
Potential Yield ◽  
Beta 2

Public awareness of foods that have physiological functions for health is increasing. Consumption of orange fleshed sweetpotato not only meets carbohydrate requirements but also beta-carotene which is good for eye health. The aim of this reserach was to evaluate the yield potential and levels of dry matter content of promising clones of orange fleshed sweetpotato rich in beta-carotene. The study was conducted in Malang, East Java in Dry Season II 2016. Genetic materials used were 20 sweetpotato clones, including Beta-1 and Beta-2 varieties as a check. The treatment design used a randomized block design with three replications. The results showed that the clones tested had a potential yield ranging from 20.9 - 35.1 t/ha with an average of 25.2 t/ha. There were three clones  had a higher yield potential than the check varieties Beta-1 and Beta-2. Dry matter content ranged from 17.0 - 31.6% with an average of 25.7%. Fifteen clones had higher levels of dry matter content than check varieties Beta-1 and Beta-2. MSU 14018-06, MSU 14001-20 and MSU 14027-02 clones had high yield potential and dry matter content. All three clones have the opportunity to be released as new superior varieties of orange fleshed sweet potato rich in beta-carotene.

scholarly journals The yield potential and chemical analysis of some introduction sweet cultivars in the Papua highlands

2021 ◽  
Vol 911 (1) ◽  
pp. 012038
Author(s):  
Syafruddin Kadir ◽  
Herniwati
Keyword(s):  
Chemical Analysis ◽  
Sweet Potato ◽  
Dry Matter ◽  
Block Design ◽  
Matter Content ◽  
Yield Potential ◽  
Dry Matter Content ◽  
Consumer Responses ◽  
Randomized Block Design ◽  
Β Carotene

Abstract The research aims to identify the adaptability some Cilembu sweet potato clones in the highland region of Papua and to determine consumer responses to sweet potato clones Cilembu. The activities carried out in Jayawijaya and Yahukimo. The experiment were 10 cultivars / clones of yams consisting of 6 (six) clones Cilembu and four (4) local sweet potato clones of each: UP-UM 1 (V1), UP-UM 4 (V2), UP-UM 5 (V3), UP-UM 6 (V4), UP-UM 9 (V5), Rancung (V6), Papua Salosa (V7), Helaleke (V8), Cangkuang (V9), and Weayuken (V10). The experiment were conducted on two districts with a height above sea level (asl) different namely Jayawijaya (1550 m asl) and Yakuhimo (2000 m). Assessment was laid out using a randomized block design (RBD) with three replications. The assessment results in districts Jayawijaya shows that, clones Cilembu UP-UM1, UP-UM 5, UP-UM 6, UP-UM 9, and Rancung, as well as varieties lonkal Papua Salosa compounds containing β-carotene / Antocianin shown from yellow / orange / purple. In the district of Jayawijaya, average tuber longest and largest bulb diameter produced by local variety Cangkuang. But the number of tubers were generated by clones Cilembu UP-UM 5. Productivity and highs of 10 varieties / clones were studied both in Jayawiya and Yakohimo is Cangkuang (23.59 t / ha), while the highest dry matter content produced by clone up- UM 4. Production of dry matter produced by the highest Weayuken varieties. The results of the chemical analysis of the highest protein content produced by clone UP-6 and UP-UM UM 9; The highest content of starch and amylose varieties produced by Cangkuang; The highest content of reducing sugar produced by clone UP-6 and UP-UM UM 9; The highest content of β-carotene produced by UP-UM 5; and the highest content of vitamin C is produced by UP-UM 6.

scholarly journals Possible Use of Root Dry Matter Content for the Estimation of Root System Activity.

Root Research ◽  
1998 ◽  
Vol 7 (4) ◽  
pp. 101-104
Author(s):  
Motoyuki HAGIWARA ◽  
Atsushi HATTORI ◽  
Naoto INOUE ◽  
Han-Yong KIM
Keyword(s):  
Root System ◽  
Dry Matter ◽  
Matter Content ◽  
Dry Matter Content ◽  
System Activity ◽  
Root Dry Matter Content
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