Genetic analysis of yield and flesh colour in sweetpotato

Naidoo, Sónia Inês Messo; Laurie, S. M.; Vorster, Juan; Mphela, Whelma M.; Greyling, M.M.; Crampton, Bridget Genevieve

doi:10.4314/acsj.v24i1.5

Cited by 19 publications

(14 citation statements)

References 29 publications

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“…In this study, most farmers cultivated sweet potatoes for consumption followed by income generation whereas the least farmers cultivated sweet potatoes for both consumption and income generation (Table 3). This is consistent with the results found by Naidoo et al (2016), who reported that sweet potato is grown as staple food mostly by poor communities in South Africa, especially in KwaZulu-Natal, Limpopo, Western Cape and Mpumalanga Provinces. Moreover, this shows that most farmers work towards generating their own food security.…”

Section: Sweet Potato Usessupporting

confidence: 93%

Knowledge and perception of small holding farmers on supplementation and feeding sweet potato vines to goats

2019

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Goats in rural communities are often raised in conditions which do not allow them to achieve their maximum performance nor express their genetic potentials. For goats to perform to their full potential, they require high nutritious feed especially in the winter season when there is food shortage or during high milk-producing periods. However, supplementation can be done using fresh green feeds, protein blocks or vitamins which are often expensive, hence the need to source for indigenous crop residues. This study assessed the knowledge and perceptions of farmers on feeding sweet potato vines to their goats. The data were gathered by administering a total of 105 structured questionnaires using face-to-face interviews. The results showed that the majority of farmers (71.4%) were aware and practise some sort of supplementary feeding. Most farmers (72.4%) cultivated sweet potatoes, and they used them for different purposes such as income generation (53.3%), consumption (27.5%) or both (8%). Sweet potato vines were being discarded as waste or burnt (32.4%), left on the field as manure (25.7%), conserved as propagation material (8.6%) or randomly fed to livestock (7.6%). Nevertheless, most of the farmers (78.1%) rejected the use of sweet potato vines as feed to livestock. In conclusion, more intervention measures are required for developing farmers' knowledge and perception on feeding sweet potatoe vines to livestock. Farmers may be assisted through training and workshops on the use of sweet potato vines and other indigenous forage supplementation as feed.

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Section: Sweet Potato Usessupporting

confidence: 93%

Knowledge and perception of small holding farmers on supplementation and feeding sweet potato vines to goats

2019

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“…All the traits had high broad sense heritability with a range from 51.33% to 100%. The results are indicating that they are more influenced by genetic factors (Chahal and Gosal 2010;Naidoo et al 2016). According to Bernardo (2002) and Afuape et al (2015) selection will be effective on the characters that have high heritability values, so that the selection can be made in early generations because this character is inherited and the performance is relatively the same.…”

Section: Discussionmentioning

confidence: 96%

Factors affecting paddy farm income in East Kalimantan, Indonesia

KARMINI

2017

Biodiversitas

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Abstract. Rahajeng W, Rahayuningsih SA. 2017. Agronomic performance, variance component, and diversity of sixty-two sweet potato accessions. Biodiversitas 18: 95-100. Sweet potato is an alternative carbohydrate source to overcome the shortage of rice due to the impact of the global change. The objectives of this research were to determine the performance, the genotypic and phenotypic variance, and the diversity of agronomic characters of sixty-two germplasm accessions of sweet potato. The research was conducted in AprilAugust 2013 at Muneng Research Station, Probolinggo, East Java, Indonesia. The material used was sixty-two accessions of sweet potato from Indonesian Legumes and Tuber Crops Research Institute (ILETRI) germplasm collection. The research was arranged in a randomized complete block design (RCBD) with two replications with a plot size of 1 m × 5 m and 100 × 25 cm in spacing (single row). The variables observed included: the vines length, the branch number, the chlorophyll index, the weight of the canopy, the harvest index, the storage root length, the storage root diameter, the number of the storage root per plot, the storage root yield, and dry matter content. The analysis of variance showed the high significant genotype at all the traits observed. All the traits showed a wide range of phenotypic variance and genotypic variance and high broad sense heritability. The PCA identified four principal components that explained 79.00% of total variation present in the genotypes. The traits that most contributed to the diversity were the chlorophyll index, the weight of vines, the vines length, and the branch number. The cluster analysis based on 69% similarity grouped sixty-two accessions into ten clusters, genotypes with superior traits currently on the first cluster. MLG 12695 and MLG 12505 were potentially used as a source of genes in the superior sweet potato varieties improved for the high yield potential purpose.

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“…Sweetpotato is one of the most important food security crops in the world with an approximate production of 106 million tons from 8 million ha (FAO, 2016). It is the 3rd most important root crops in the world, after potatoes and cassava (Naidoo et al., 2016). Asia is the largest sweetpotato‐producing continent in the world with the production of 79 million tons (about 75% is from China alone), followed by Africa (FAO, 2016).…”

Section: Introductionmentioning

confidence: 99%

Sweetpotato production practices, constraints, and variety evaluation under different storage types

Abrham

Beshir

Haile

2020

Food and Energy Security

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Sweetpotato plays an important role in ensuring food security and household income sources for local communities in Ethiopia. It is dominantly grown in southern parts of Ethiopia. However, its production and productivity over the last few years has declined due to the limited access of quality planting materials at the onset of the rainy season, disease, and severe pest infestation. Therefore, it was imperative to carry out this study to identify the main constraints related to the recent decline in sweet in Misrak Badawacho District. The survey result revealed that many varieties of sweetpotato were grown in the district; mainly, Awassa‐83, Ogan‐Sagan, and Wolaita‐local were the most preferred variety by producers. The main sweetpotato production and storage constraints in the study district are as follows: rodents, disease and insect pests, heat and drought, shortage of quality planting materials, and absence of best methods for long‐term storage. Ogan‐Sagan and Wolaita‐local were evaluated under different storage types (straw, soil, ash, sawdust, and sand storage). The combination of Awassa‐83 variety and sand storage was performed better in percentage of decay, weight loss, and weevil damage, whereas length and number of vine per storage roots were performed better in the separate treatment. Thus, Awassa‐83 variety and sand storage can be recommended for maintaining the storage roots during dry periods and access of quality vines at the onset of the rainy season. More importantly, sand storage provides an opportunity to maintain the quality of sweetpotato storage roots for a long period of time and producers can easily and timely access quality vines at the onset of rainy season.

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Genetic analysis of yield and flesh colour in sweetpotato

Cited by 19 publications

References 29 publications

Knowledge and perception of small holding farmers on supplementation and feeding sweet potato vines to goats

Knowledge and perception of small holding farmers on supplementation and feeding sweet potato vines to goats

Factors affecting paddy farm income in East Kalimantan, Indonesia

Sweetpotato production practices, constraints, and variety evaluation under different storage types

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