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  1. Article ; Online: Influence of soil moisture stress on vegetative growth and root yield of some cassava genotypes for better selection strategy in screen house conditions and different agro-ecologies in Nigeria

    Adetoro, N.A. / Sikirou, M.

    2023  

    Abstract: Cassava is a vital staple crop for many African populations particularly in Nigeria. This study was conducted to determine the effect of soil moisture on the performance of selected 12 cassava genotypes that were evaluated for yield and related traits ... ...

    Abstract Cassava is a vital staple crop for many African populations particularly in Nigeria. This study was conducted to determine the effect of soil moisture on the performance of selected 12 cassava genotypes that were evaluated for yield and related traits under three percentages of field capacity (75% – control, 50%, and 25%) in the screen house and field conditions in three agro-ecologies (Ibadan-Derived Savanna, Mokwa-Southern Guinea Savanna, and Zaria-Northern Guinea Savanna) and randomized complete block design was used. Data were collected on plant height, stem girth, number of nodes and leaves, shoot weight, stomata conductant, stay-green, fresh root weight, and dry matter percentage and were analyzed using descriptive statistics and ANOVA. Genotypes differed significantly across and within locations. The higher stress level (25% field capacity – F.C.) resulted in a more significant reduction in vegetative growth than the moderate stress level of 50% F.C.; moisture levels were uniform over time for plant height and stem girth. The response to moisture levels varied widely among genotypes, indicating that they experienced a higher stress condition. Genotypes IITA-TMS-IBA980581, IITA-TMS-IBA010040, and IITA-TMS-IBA010034 were identified with good drought tolerance. Integrating physiological research with breeding efforts will help in the selection of suitable varieties for release.
    Keywords soil moisture ; cassava ; agroecology ; yields ; selection ; nigeria
    Language English
    Publishing date 2023-02-08T10:51:29Z
    Publisher IntechOpen
    Publishing country fr
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Assessing cassava breeding clones in two agroecologies in the Democratic Republic of Congo

    Sikirou, M. / Mwangu, K.M. / Kayondo, S.I. / Agre, A.P. / Tata-Hangy, W. / Bakelana, T. / Adetoro, N.A.

    Revue Ivoirienne des Sciences et Technologie

    2023  

    Abstract: Breeding is the most economical approach for controlling production constraints in cassava (Manihot esculenta Crantz) smallholder farms. This study aims at assessing the performances of elite cassava clones in the province of Kwilu, Democratic Republic ... ...

    Abstract Breeding is the most economical approach for controlling production constraints in cassava (Manihot esculenta Crantz) smallholder farms. This study aims at assessing the performances of elite cassava clones in the province of Kwilu, Democratic Republic of Congo (DRC). Three sets of trials were established using an alpha lattice and a randomized complete block designs in two contrasting locations, upland savanna and valley forest agroecologies. Eleven traits were used in phenotyping the cassava clones along with two checks varieties (local cultivar Biele and improved variety OBAMA). High heritability was recorded for the traits and it ranged from 0.52 to 0.75 except for yield (0.45). They are significant differences between the tested clones and the improved variety OBAMA. Overall, the Best Linear Unbiased Estimates (BLUEs) used for weighing in the selection index led to two candidate clones, KYK2016-048 and KYK2015-04 that outperformed both checks, Obama and Biele in this study and they could be potential candidates for variety replacement.
    Keywords breeding ; democratic republic of the congo ; cassava ; manihot esculenta ; savannas ; forests ; yields
    Language English
    Publishing date 2023-03-14T10:05:51Z
    Publishing country fr
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: Performance and stability of improved cassava (Manihot esculenta Crantz) clones in demand creation trials in Nigeria

    Ogwuche, T.O. / Diebiru-Ojo, E.M. / Adetoro, N.A. / Ossai, C. / Ekanem, U.O. / Adegbite, B. / Oyebode, G. / Kulakow, P.

    Crops

    2023  

    Abstract: Open Access Journal ... Cassava fresh root yield and dry matter content constitute major determinants of demand by end-users. Increased demand for the seeds of improved varieties will facilitate the development of a sustainable seed system. However, for ... ...

    Abstract Open Access Journal

    Cassava fresh root yield and dry matter content constitute major determinants of demand by end-users. Increased demand for the seeds of improved varieties will facilitate the development of a sustainable seed system. However, for wide acceptability, there is a need to continuously evaluate candidate varieties for stability across different agroecological zones. Participatory Demand Creation Trials (DCTs) were established to evaluate cassava varieties with farmers and processors utilizing the best agronomic practices. The multi-year DCTs were conducted in 20 environments (7 locations) during the 2016–2017, 2017–2018, 2018–2019, and 2019/2020 cropping seasons with two replications. The plot sizes were 320 m2 with a spacing of 1 m × 0.8 m. The traits evaluated were Plant Vigor (PV), root number, fresh yield, dry yield, Dry Matter Content (DMC), and bundle estimation. The traits were subjected to a GGE biplot in R software to identify high-yielding and stable genotypes. Results obtained from the 20 environments showed that genotype (G), environment (E), and GXE interaction effects were significant (p < 0.01) for all the traits but PV. The heritability ranged from 56% (PV) to 96% (DMC). The average fresh yield t/ha ranged from 25.5 (IBA30572) to 35.4 (IBA980505). The DMC ranged from CR36/5 (36.1%) to IBA010040 (30.7%). The dry yield ranged from 8.8% (IBA30572) to 11.4 (IBA980505). Estimated bundles ranged from 13.5 (CR36-5) to 15.7 (IBA950289). Three varieties, IBA961632, TMEB419, and CR36/5, were identified as the most promising high dry matter content varieties for cassava processors and farmers in Nigeria, and genotype IBA961632 was the most stable. The study revealed greater genotypic effects than from the environment and high genetic advances.
    Keywords seed systems ; cassava ; food security ; nigeria ; demand ; clones
    Language English
    Publishing date 2023-10-11T14:43:48Z
    Publishing country fr
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article: Evaluation of improved cassava genotypes for yield and related traits for a better breeding strategy under different agroecologies in Nigeria

    Adetoro, N. A / Oworu, O. O / Nassir, A. L / Bello, A / Parkes, E / Ogunbayo, S. A / Akinwale, M. G / Aina, O. O / Afolabi, A / Iluebbey, P / Sanni, L. O / Maziya-Dixon, B / Dixon, A / Kulakow, P

    Euphytica. 2021 Apr., v. 217, no. 4

    2021  

    Abstract: This study aimed at determining shoot and root characteristics of cassava as affected by root yield and the influence of soil moisture on vegetative growth and yield. Thirty cassava genotypes were evaluated for morphological and physiological ... ...

    Abstract This study aimed at determining shoot and root characteristics of cassava as affected by root yield and the influence of soil moisture on vegetative growth and yield. Thirty cassava genotypes were evaluated for morphological and physiological characterization in three locations in Nigeria: Ibadan, Mokwa and Zaria. Randomized complete block design was used with four replicates. Studies on the pasting properties of the genotypes were also carried out. Data were collected on plant height, stem girth, stay-green ability, garri and fresh root weight. Genotypes differed significantly (P < 0.05) across and within locations for shoot and root characteristics. Across locations, genotype 011663 had the highest plant height (132.4 cm); 30572 had the largest stem girth (8.6 cm); and 010040 was the best stay-green (2.2). Genotype 011086 had the highest number of roots per plot (95.7), 950289 had the highest fresh root yield (24.3 t/ha), and 990554 had the highest percentage of dry matter (35.2). Trends in root yields across locations were Ibadan (28.9 t/ha), Mokwa (20.3 t/ha), and Zaria (8 t/ha). Five genotypes IITA-TMS-IBA950289, 010034, 990554, 011807, and 980581 had negligible interactions with the environment and so have broad adaptation and are considered stable; and two clones 011807 and 950166 were found to be the best for pasting properties. Breeding strategies that consider root size, total root number, harvest index, dry matter, with applications for household foods and industrial uses, will be an effective and efficient way to select genotypes for high yield.
    Keywords cassava ; genotype ; harvest index ; plant height ; soil water ; vegetative growth ; Nigeria
    Language English
    Dates of publication 2021-04
    Size p. 73.
    Publishing place Springer Netherlands
    Document type Article
    Note NAL-AP-2-clean
    ZDB-ID 216568-5
    ISSN 1573-5060 ; 0014-2336
    ISSN (online) 1573-5060
    ISSN 0014-2336
    DOI 10.1007/s10681-021-02798-9
    Database NAL-Catalogue (AGRICOLA)

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  5. Article ; Online: Evaluation of improved cassava genotypes for yield and related traits for a better breeding strategy under different agroecologies in Nigeria

    Adetoro, N.A. / Oworu, O.O. / Nassir, A.L. / Bello, A. / Parkes, E. / Ogunbayo, S.A. / Akinwale, M.G. / Aina, O.O. / Afolabi, A. / Iluebbey, Peter O. / Sanni, L.O. / Maziya-Dixon, Busie / Dixon, A. / Kulakow, Peter

    Euphytica

    2021  

    Abstract: This study aimed at determining shoot and root characteristics of cassava as affected by root yield and the influence of soil moisture on vegetative growth and yield. Thirty cassava genotypes were evaluated for morphological and physiological ... ...

    Abstract This study aimed at determining shoot and root characteristics of cassava as affected by root yield and the influence of soil moisture on vegetative growth and yield. Thirty cassava genotypes were evaluated for morphological and physiological characterization in three locations in Nigeria: Ibadan, Mokwa and Zaria. Randomized complete block design was used with four replicates. Studies on the pasting properties of the genotypes were also carried out. Data were collected on plant height, stem girth, stay-green ability, garri and fresh root weight. Genotypes differed significantly (P < 0.05) across and within locations for shoot and root characteristics. Across locations, genotype 011663 had the highest plant height (132.4 cm); 30572 had the largest stem girth (8.6 cm); and 010040 was the best stay-green (2.2). Genotype 011086 had the highest number of roots per plot (95.7), 950289 had the highest fresh root yield (24.3 t/ha), and 990554 had the highest percentage of dry matter (35.2). Trends in root yields across locations were Ibadan (28.9 t/ha), Mokwa (20.3 t/ha), and Zaria (8 t/ha). Five genotypes IITA-TMS-IBA950289, 010034, 990554, 011807, and 980581 had negligible interactions with the environment and so have broad adaptation and are considered stable; and two clones 011807 and 950166 were found to be the best for pasting properties. Breeding strategies that consider root size, total root number, harvest index, dry matter, with applications for household foods and industrial uses, will be an effective and efficient way to select genotypes for high yield.
    Keywords cassava ; genotypes ; soil moisture ; vegetative stage ; nigeria ; breeding
    Language English
    Publishing date 2021-04-19T14:48:23Z
    Publisher Springer
    Publishing country fr
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Audio / Video ; Online: Influence of growth nutrient and rooting hormone on survival and growth of Semi-Autotrophic Hydroponics (SAH TM) cassava plantlets

    Ogwuche, T.O. / Adesanya, T.A. / Diebiru-Ojo, E.M. / Adetoro, N.A. / Olasupo, K.T. / Kumar, P. Lava / Aina, O.O. / Iluebbey, Peter O. / Agbona, A. / Parkes, E.Y. / Kulakow, Peter

    2019  

    Keywords cassava ; varieties ; plantlets ; propagation materials
    Language English
    Publishing date 2019-02-18T12:53:43Z
    Publisher Global Cassava Partnership for the 21st Century - GCP21
    Publishing country fr
    Document type Audio / Video ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Audio / Video ; Online: Response of root dry matter content of four improved cassava genotypes to fertilizer application in two agro-ecologies in Nigeria

    Oketade, E.I. / Akoroda, M.O. / Aina, O.O. / Iluebbey, Peter O. / Adetoro, N.A. / Bello, A.A. / Agbona, A. / Parkes, E.Y. / Kulakow, Peter

    2019  

    Keywords cassava ; manihot esculenta ; genotypes ; fertilizers ; nigeria ; west africa
    Language English
    Publishing date 2019-02-18T12:36:31Z
    Publisher Global Cassava Partnership for the 21st Century - GCP21
    Publishing country fr
    Document type Audio / Video ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Audio / Video ; Online: Performance of cassava varieties for yield component traits in demands creation trials in Nigeria

    Adetoro, N.A. / Ogwuche, T.O. / Diebiru-Ojo, E.M. / Oyebode, G.O. / Olasupo, T.K. / Aina, O.O. / Iluebbey, Peter O. / Parkes, E.Y. / Kulakow, P.A.

    2019  

    Keywords cassava ; varieties ; livelihoods ; yields ; food security ; nigeria
    Language English
    Publishing date 2019-08-28T10:09:05Z
    Publisher Global Cassava Partnership for the 21st Century - GCP21
    Publishing country fr
    Document type Audio / Video ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  9. Audio / Video ; Online: Performance and dry root yield stability of improved cassava (Manihot esculenta Crantz) clones evaluated in diverse agroecological zones of Nigeria

    Oyebode, G.O. / Parkes, E.Y. / Aina, O.O. / Rabbi, Ismail Y. / Moshood, B.A. / Afolabi, A. / Iluebbey, Peter O. / Adetoro, N.A. / Ikpan, S.A. / Akoroda, M.O. / Kulakow, P.A.

    2018  

    Keywords cassava ; genotypes ; food security ; genotype by environment ; dry root
    Language English
    Publishing date 2018-02-02T12:54:09Z
    Publisher International Society For Tropical Root Crops
    Publishing country fr
    Document type Audio / Video ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  10. Audio / Video ; Online: Combining ability through line by tester analysis for root yield and total carotenoid concentration in biofortified cassava genotypes

    Ogwuche, T.O. / Akoroda, M.O. / Oyebode, G.O. / Parkes, E.Y. / Iluebbey, Peter O. / Adetoro, N.A. / Aina, O.O. / Olaniyo, E.E. / Owoade, D. / Bakare, M.A. / Ikpan, A.S. / Kulakow, P.A.

    2018  

    Keywords cassava ; food security ; carotenoids ; genotypes ; biofortified cassava
    Language English
    Publishing date 2018-02-02T14:47:24Z
    Publisher International Society For Tropical Root Crops
    Publishing country fr
    Document type Audio / Video ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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