Progeny Evaluation of Some Sweet Potato [Ipomoea Batatas (L.) Lam.] Breeding Lines in South Africa

Zulu, L.; Adebola, Patrick; Shegro, A.; Laurie, S. M.; Pillay, Michael

doi:10.17660/actahortic.2013.1007.25

Cited by 3 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The presence of genetic variation among the parental genotypes and progenies across the two locations (Table 4), confirmed the usefulness of diallel crosses in creating genetic variation in the breeding populations of sweet potato. Previous studies in sweetpotato reported high genetic variability resulting from diallel crosses (Kanju, 2000;Chiona, 2010;Zulu et al, 2012), indicating an extensive genetic pool for selection purposes in breeding of a crop (Pierce, 2012).…”

Section: Discussionmentioning

confidence: 99%

Genetic analysis of yield and flesh colour in sweetpotato

Naidoo¹,

Laurie²,

Vorster³

et al. 2016

Afr. Crop Sci. J.

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 99%

Genetic analysis of yield and flesh colour in sweetpotato

Naidoo¹,

Laurie²,

Vorster³

et al. 2016

Afr. Crop Sci. J.

View full text Add to dashboard Cite

“…The presence of genetic variation among the parental genotypes and progenies across the two environments, confirmed the usefulness of diallel crosses in creating genetic variation in the breeding populations of sweet potato (Gholizadeh et al, 2018). Previous studies in sweetpotato reported high genetic variability resulting from diallel crosses [15,16,17], indicating an extensive genetic pool for selection purposes in breeding of a crop [18]. In breeding for C. formicarius tolerance, the lower the value obtained for C. formicarius related parameters, the better the genotypes with respect to these traits.…”

Section: General and Specific Combining Ability Effectsmentioning

confidence: 99%

“…Sweetpotato weevil is the major pest constraint of sweetpotato production in south west Nigeria. Infestation causes substantial yield losses, averaging more than 70% of sweetpotato virus free environment [1]. It causes economic damage in areas with a marked dry season or in unseasonably dry years [2].…”

Section: Introductionmentioning

confidence: 99%

Combnining Ability of Sweetpotato Yield in Endemic and Non-endemic Sweetpotato Weevil (Cylas formicarius) Environments in South West Nigeria

Afolabi

Akoroda

2019

ARJA

View full text Add to dashboard Cite

Introduction: Combining ability studies in sweetpotato marketable root yield were carried out using ten sweetpotato varieties and their F1 hybrids in Cylas formicarius endemic (Omu Aran) and free (Ibadan) environments during 2012 cropping season. Study Design: The genetic material used for this experiment was from the germplasm collection of the Department of Agronomy, University of Ibadan, Nigeria. This material comprised of 10 varieties of sweetpotato: 5 orange fleshed, 3 white fleshed and 2 yellow fleshed. Place and Duration of Study: The field trial was carried out in C. formicarius endemic (Omu Aran) and Non-endemic (Ibadan) environments both in South West Nigeria during the raining season of 2012. Methods: Collected data were subjected to diallel analysis using Griffing (15) approach in method I (parents, crosses reciprocals together), Model I (fixed effects). Both general combining ability (GCA) and specific combining abilities (SCA) were computed using PBTools, version 1.4. for the 10 parents and their F1 hybrids with respect to C. formicarius. Results and Discussion: The result obtained from this study showed that some parents were tolerant to C. formicarius, but level of tolerance varied probably due to differences in genetic background among the parental population or time of planting. Hybrids from the parents resisto, TIS 87/0087 displayed high performance in term of C. formicarius tolerance. These parents and their hybrids appeared to have gene pools for C. formicarius tolerance that can be manipulated and used to develop promising hybrids in South west, Nigeria.

show abstract

Effects of different foliar iron applications on activity of ferric chelate reductase and concentration of iron in sweet potato (Ipomoea batatas)

et al. 2019

View full text Add to dashboard Cite

We studied the relative efficacy of different forms of foliar iron (Fe) fertilisation on leaf re-greening in Fe-deficient, purple-fleshed sweet potato (Ipomoea batatas (L.) Lam.) varieties xuzi8 and xuzi6. Activities of ferric chelate reductase (FCR) and concentrations of Fe were measured in the leaves and roots at intervals over 5 days to quantify recovery from leaf chlorosis. Freshly expanded and chlorotic leaves were immersed in one of three different fertiliser compounds containing 9 mm Fe: FeSO4, Fe2(SO4)3, Fe(III)-EDTA. An Fe-sufficient treatment and an Fe-deficient control were included. The experiment had a completely randomised block design with five replications per treatment and was conducted in a sunlit glasshouse. For variety xuzi8, leaf FCR activity in the Fe2(SO4)3 treatment was highest at 1 h after application, and higher than all other treatments, whereas FeSO4 and Fe(III)-EDTA treatments showed their highest FCR at day 5 after application, both significantly higher than the Fe2(SO4)3 and control treatments. Furthermore, leaf Fe concentration reached a maximum in the FeSO4 treatment at day 1, and in the Fe2(SO4)3 treatment at day 3. By contrast, root Fe concentration was relatively constant and lower in the foliar Fe treatments than the Fe-sufficient and -deficient treatments. For variety xuzi6, leaf SPAD was higher with the Fe2(SO4)3 than the FeSO4 treatment at day 5 after application. In general, FCR activity and Fe concentrations in roots and leaves of xuzi6 were higher than those of xuzi8. Variations in leaf Fe concentrations were similar for both the FeSO4 and Fe2(SO4)3 treatments of the two varieties. Maximum leaf Fe levels in xuzi6 were ~4-fold those in xuzi8. The results of the study suggest that foliar-applied Fe2(SO4)3 was the most effective compound at correcting Fe-deficiency symptoms. The higher leaf and root FCR activity and Fe concentration in xuzi6 might explain its higher tolerance to Fe deficiency and better re-greening than xuzi8.

show abstract

Progeny Evaluation of Some Sweet Potato [Ipomoea Batatas (L.) Lam.] Breeding Lines in South Africa

Cited by 3 publications

References 0 publications

Genetic analysis of yield and flesh colour in sweetpotato

Genetic analysis of yield and flesh colour in sweetpotato

Combnining Ability of Sweetpotato Yield in Endemic and Non-endemic Sweetpotato Weevil (Cylas formicarius) Environments in South West Nigeria

Effects of different foliar iron applications on activity of ferric chelate reductase and concentration of iron in sweet potato (Ipomoea batatas)

Contact Info

Product

Resources

About