Assessment of Four Sweet Potato (Ipomoea batatas L.) Varieties for Adapatibility and Productivity in Iwo, Osun State

Esan, Vincent Ishola; Omilani, O. O.

doi:10.9734/ajahr/2018/39429

Cited by 6 publications

(6 citation statements)

References 6 publications

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“…Ali et al (2009) showed that maximum number of tuber roots plant -1 (5.13 tubers), average diameter of tuber roots (3.87 cm). Also, Esan and Omilani (2018) in there study on four Nigerian varieties mentioned that Iwo 1 was the highest yielding variety among the remaining ones. However, Rahman et al (2013) indicated that CIP440267 was suitable for cultivation in Bangladesh among other varieties as an orange fleshed sweet potato variety.…”

Section: Resultsmentioning

confidence: 91%

Assessment of Variability, Correlation and Response to Selection in Four Cultivars of Sweet Potato "Ipomia batata, L." under Alexandria Environmental Condition

Gehan¹

2019

Alexandria Journal of Agricultural Sciences

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The efficiency of two cycles of clonal selection on some economical characters in four different varieties of sweet potato (Abbies, Mabrouka, Beaurogard and local Nigerian variety) were studied. The magnitude of variability, heritability and response to selection, as well as phenotypic correlation coefficients among all possible pairs of the studied characters were measured. This work was carried out at the Experimental Station Farm (at Abies), Faculty of Agriculture, Alex. Univ., Alex. Governorate, Egypt during three summer seasons of 2016-2018. The obtained results illustrated generally that the estimated coefficients of variability and ranges of the studied characters of the four cultivars original populations reflected high and enough variability, which suggested high possibilities of conducting successful and efficient selection. This lead to produce improved cultivar with better performance than its original population. Also, the results demonstrated, in general, that two cycles of clonal selection exhibited high efficiency for improving all studied characters with different rates, compared with the original population. The estimated values of heritability (h 2 bs) for the various studied characters were found to be high for dry matter and very low for root diameter. The highest estimates of genetic advance as percentage of mean were obtained for root number-1 plant 99.7%, root weight plant-1 89.0 %, root length 77% and vine length 69.2%. The results also, revealed that phenotypic clonal selection was ended up with populations that have improved root number plant-1 for Abbies, Mabrouka and beaurogard by 77.87 %, 101.9% and 51.71%, respectively, in respect to the original population. The increment over original population for fruit number plant-1 in Nigerian variety was observed in C 1 population which reached 53%. Meanwhile, the results also demonstrated that Abbies produced the maximum number of tubers plant-1 (5.87 tubers) and the highest root weight plant-1 was observed in Beaurogard (1.67 kg/ plant). Moreover, Abbies variety had the highest values for dry matter, TSS and carotene content and it was statistically different from the remaining three sweet potato varieties. Furthermore, correlation estimates revealed significant associations among the various pairs of the studied characters. These findings appeared to be desirable for achieving the objectives of the selection in the present study. Accordingly, improving roots yield and its components of sweet potato can be achieved through purification of the most important and commercial cultivars to produce improved clones through clonal selection program.

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Section: Resultsmentioning

confidence: 91%

Assessment of Variability, Correlation and Response to Selection in Four Cultivars of Sweet Potato "Ipomia batata, L." under Alexandria Environmental Condition

Gehan¹

2019

Alexandria Journal of Agricultural Sciences

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“…The good agronomic potentialities of the landraces of S. rotundifolius from Nigeria and Ghana could be explained by the genetic potentialities of the local accessions and good growing conditions. These factors were reported by many authors to have significant effects on tubers size and yield of potato (Kawakami et al, 2005;Bombik et al, 2013;Sanli et al, 2015;Mangani et al, 2016;Bijeta et al, 2017;Dash et al, 2018), sweet potato (Esan and Omilani, 2018) and cassava (Agbaje and Akinlosotu, 2004). However, the potential of the morphotypes was close to the general potential of S. rotundifolius in Africa.…”

Section: Discussionmentioning

confidence: 82%

Characterisation of three morphotypes of Solenostemon rotundifolius [(Poir.) J. K. Morton] cultivated in Burkina Faso using quantitative traits

Nanéma¹,

Kiébré²,

Traoré³

et al. 2019

Int. J. Genet. Mol. Biol.

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Evaluation of intra specific variability is a key step toward conservation and sustainable use of species.This study was carried out to describe the morphotypes of Solenostemon rotundifolius (Lamiaceae) based on quantitative traits. Three accessions (E02, E35 and E20), representing the morphotypes "A", "B" and "C" were characterised in Randomised Complete Block Design with three replications. Twentyfour (24) traits related to the cycle, the canopy size, the production and the tuber size were measured. Analysis of variance (ANOVA) revealed significant difference of the morphotypes (at level P = 0.05 or 0.01) in the traits related to the canopy and leaf size, the crop cycle, the production and the tuber size. The morphotype "A" was identified to be the most promising one. It was early maturing (107 to 113 days) and the most productive (134.98 g per plant). The cycle of the morphotypes "B" and "C" varied from 154 to 164 days and 118 to 149 days and tuber weight per plant was 46.03 and 45.17 g, respectively. This work is a step toward a full description of the morphotypes of S. rotundifolius. It provided a useful list of quantitative traits that can be used as descriptors for future description of genetic resources of S. rotundifolius and for breeding purposes.

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“…Combining ability studies have been conducted in many crops ranging from cereals, roots to legumes, indicating that it is a crucial tool in plant breeding (Fasahat et al, 2016). In sweet potato, though some more efforts need to be done, studies on combining ability estimation are readily available (Esan and Omilani, 2018;Musembi et al, 2015;Rukundo et al, 2017). Resisto and Ejumula had the GCA effects on flesh color suggesting that these parents must be included in a breeding scheme where the target is to develop cultivars with high beta-carotene content.…”

Section: Gca and Sca Effectsmentioning

confidence: 99%

Heterosis and combining ability for storage root, flesh color, virus disease resistance and vine weight in Sweet potato [Ipomoea batatas (L.) Lam.]

Bâ¹,

Gemenet²,

Onguso³

et al. 2020

Afr. J. Agric. Res.

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This study was done to determine the mid-parent heterosis, the general (GCA) and specific (SCA) combining abilities of storage root yield, sweet potato virus resistance (SPVD), flesh color and vine weight of candidate sweet potato clones. Sixteen selected genotypes from two gene pools were crossed in an 8B×8A cross having 64 families. Trials were conducted with 1,896 offsprings and 16 parents during two seasons at the National Crops Resources Research Institute in Uganda (NaCRRI) using a Westcott design (only checks were replicated). Significant differences in performance were noted among families for all traits in both seasons (P ≤ 0.001). Magabali×NK259L and Resisto×Naspot 7 were the best crosses for improving total storage root while Naspot 5×Naspot 7 stood out as the best cross for flesh color. The ratio of general combining ability to specific combining ability (GCA/SCA) for storage root, flesh color and SPVD ranged from 0.55 to 0.79, implying that additive gene effects were more important than non-additive gene effects for these traits. For vine weight, non-additive gene effects tended to be predominant. A susceptible parent Magabali and a moderately susceptible parent Naspot 1 had the most resistant progenies. This suggests that SPVD resistant alleles could be homozygous recessive, which may be confirmed in further studies. Correlation studies between traits were almost all significant except for flesh color and storage root yield. There was a positive and significant correlation (P ≤ 0.001) between flesh color and SPVD resistance, with orange roots being the most resistant to SPVD. This important finding can help breeders to come up with orange-fleshed sweet potatoes that are highly resistant to virus diseases.

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Assessment of Four Sweet Potato (Ipomoea batatas L.) Varieties for Adapatibility and Productivity in Iwo, Osun State

Cited by 6 publications

References 6 publications

Assessment of Variability, Correlation and Response to Selection in Four Cultivars of Sweet Potato "Ipomia batata, L." under Alexandria Environmental Condition

Assessment of Variability, Correlation and Response to Selection in Four Cultivars of Sweet Potato "Ipomia batata, L." under Alexandria Environmental Condition

Characterisation of three morphotypes of Solenostemon rotundifolius [(Poir.) J. K. Morton] cultivated in Burkina Faso using quantitative traits

Heterosis and combining ability for storage root, flesh color, virus disease resistance and vine weight in Sweet potato [Ipomoea batatas (L.) Lam.]

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