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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: Cut, Root, and Grow: Simplifying Cassava Propagation to Scale.

    Sheat, Samar / Mushi, Edda / Gwandu, Francisca / Sikirou, Mouritala / Baleke, Patrick / Kayondo, Siraj Ismail / Kulembeka, Heneriko / Adetoro, Najimu / Winter, Stephan

    Plants (Basel, Switzerland)

    2024  Volume 13, Issue 4

    Abstract: Cassava ( ...

    Abstract Cassava (
    Language English
    Publishing date 2024-02-06
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2704341-1
    ISSN 2223-7747
    ISSN 2223-7747
    DOI 10.3390/plants13040471
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Genetic improvement of iron toxicity tolerance in rice-progress, challenges and prospects in West Africa

    Sikirou, M. / Saito, Kazuki / Achigan-Dako, E.G. / Drame, K.N. / Ahanchédé, A. / Venuprasad, R.

    Plant Production Science

    2022  

    Keywords rice ; plant breeding ; plant genetics ; iron ; toxicology
    Language English
    Publishing date 2022-01-27T15:05:27Z
    Publisher Informa UK Limited
    Publishing country fr
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. 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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  5. Article ; Online: Soil-based screening for iron toxicity tolerance in rice using pots

    Sikirou, M. / Saito, Kazuki / Drame, K.N. / Saidou, A. / Dieng, I. / Ahanchédé, A.

    Plant Production Science

    2021  

    Abstract: The objective of this study was to assess the reliability of pot-based screening method for iron (Fe) toxicity tolerance in rice using soils from hot spots. Five lowland rice varieties with known reaction to Fe toxicity were grown in pots in a screen ... ...

    Abstract The objective of this study was to assess the reliability of pot-based screening method for iron (Fe) toxicity tolerance in rice using soils from hot spots. Five lowland rice varieties with known reaction to Fe toxicity were grown in pots in a screen house for three seasons. Fe-toxic soils from two hot spot fields – Edozighi, Nigeria and Niaouli, Benin were used and soil from Africa Rice Center (AfricaRice) experimental farm, Cotonou, Benin was included as control. Leaf bronzing score (LBS) was determined at different stages, and grain yield was determined at maturity. Heritability was estimated using data across the three seasons. High heritability was recorded for LBS and grain yield. Grain yield reduction in stress treatment relative to control varied from 15 to 56% depending on the variety and soil. Bao Thai, Suakoko 8, and WITA 4 had better performance under Fe toxicity in terms of LBS, yield and relative yield reduction, whereas Bouake 189 and IR64 had poorer performance. Grain yield and LBS were significantly correlated but negatively at 60 days after sowing (DAS). Overall, the results found in this experiment were consistent with previous field studies. Therefore, pot screening using soils from hot spots can be used by rice breeding programs to reliably assess Fe toxicity tolerance ex situ.
    Keywords rice ; research ; soil
    Language English
    Publishing date 2021-07-15T14:30:07Z
    Publisher Informa UK Limited
    Publishing country fr
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article: Expansion of the Cassava Brown Streak Disease Epidemic in Eastern Democratic Republic of Congo.

    Casinga, C M / Shirima, R R / Mahungu, N M / Tata-Hangy, W / Bashizi, K B / Munyerenkana, C M / Ughento, H / Enene, J / Sikirou, M / Dhed'a, B / Monde, G / Kumar, P L / Legg, J P

    Plant disease

    2021  Volume 105, Issue 8, Page(s) 2177–2188

    Abstract: Cassava plays a key role in ensuring food security and generating income for smallholder farmers throughout Central Africa, particularly in the Democratic Republic of Congo (DRC). This status is threatened, however, by cassava brown streak disease (CBSD), ...

    Abstract Cassava plays a key role in ensuring food security and generating income for smallholder farmers throughout Central Africa, particularly in the Democratic Republic of Congo (DRC). This status is threatened, however, by cassava brown streak disease (CBSD), which has expanded its incidence and range in eastern DRC. The study described here comprises the first extensive assessment of temporal change in the occurrence of CBSD and its causal viruses in DRC, based on surveys conducted during 2016 and 2018. Cassava fields were inspected in Ituri, Nord-Kivu, Sud-Kivu, Tanganyika, and Haut-Katanga provinces within eastern DRC to record foliar incidence and severity of CBSD. Leaf samples were collected for virus detection and species-level identification. New occurrences of CBSD, confirmed by virus diagnostic tests, were recorded in two provinces (Haut-Katanga and Sud-Kivu) and nine previously unaffected territories, covering an area of >62,000 km
    MeSH term(s) Africa, Central ; Democratic Republic of the Congo/epidemiology ; Manihot ; Plant Diseases ; Plant Leaves
    Language English
    Publishing date 2021-08-17
    Publishing country United States
    Document type Journal Article
    ZDB-ID 754182-x
    ISSN 0191-2917
    ISSN 0191-2917
    DOI 10.1094/PDIS-05-20-1135-RE
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Z 2043: Show issues

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  7. Article ; Online: Diversity and distribution of whiteflies colonizing cassava in eastern Democratic Republic of Congo

    Casinga, C.M. / Wosula, E.N. / Sikirou, M. / Shirima, R.R. / Munyerenkana, C.M. / Nabahungu, N.L. / Bashizi, K.B. / Ugentho, H. / Monde, G. / Legg, James P.

    Insects

    2022  

    Abstract: The present study characterizes Bemisia tabaci and Bemisia afer from cassava in eastern Democratic Republic of Congo (DRC). The Mitochondrial COI sequencing revealed the occurrence of six cassava B. tabaci mitotypes, which were designated into four ... ...

    Abstract The present study characterizes Bemisia tabaci and Bemisia afer from cassava in eastern Democratic Republic of Congo (DRC). The Mitochondrial COI sequencing revealed the occurrence of six cassava B. tabaci mitotypes, which were designated into four haplogroups (SSA-ECA, SSA-CA, SSA2, and SSA-ESA) using KASP SNP genotyping. SSA-ECA (72%) was the most prevalent and occurred in the northern part of the surveyed area, in the Ituri and Nord/Sud-Kivu provinces, whilst SSA-CA (21%) was present in the south, primarily in Haut-Katanga. SSA-ECA was predominant in the areas of north-eastern DRC most severely affected by cassava brown streak disease and was also reported in the new outbreak area in Pweto territory, Haut-Katanga, in the south. Bemisia afer comprised two major clusters with 85.5% of samples in cluster one, while the rest were in cluster two, which has no reference sequence in GenBank. This study provides important information on the genetic diversity of B. tabaci and B. afer in eastern DRC. This knowledge will be used as a basis for further studies to understand and to identify the role of whitefly haplogroups, their population densities and consequences for virus epidemics and spread as well as leading to improved vector and virus management strategies.
    Keywords cassava ; bemisia tabaci ; genetic diversity ; genotypes ; viruses ; aleyrodidae ; whiteflies
    Language English
    Publishing date 2022-10-06T08:21:51Z
    Publisher MDPI
    Publishing country fr
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article: Diversity and Distribution of Whiteflies Colonizing Cassava in Eastern Democratic Republic of Congo.

    Casinga, Clérisse M / Wosula, Everlyne N / Sikirou, Mouritala / Shirima, Rudolph R / Munyerenkana, Carine M / Nabahungu, Leon N / Bashizi, Benoit K / Ugentho, Henry / Monde, Godefroid / Legg, James P

    Insects

    2022  Volume 13, Issue 9

    Abstract: The present study ... ...

    Abstract The present study characterizes
    Language English
    Publishing date 2022-09-19
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662247-6
    ISSN 2075-4450
    ISSN 2075-4450
    DOI 10.3390/insects13090849
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Expansion of the cassava brown streak disease epidemic in eastern Democratic Republic of Congo

    Casinga, C.M. / Shirima, R.R. / Mahungu, N. / Tata-Hangy, W. / Bashizi, K.B. / Munyerenkana, C.M. / Ughento, H. / Enene, J. / Sikirou, M. / Dhed'a, D.B. / Monde, G. / Kumar, P. Lava / Legg, James P.

    Plant Disease

    2021  

    Abstract: Cassava plays a key role in ensuring food security and generating income for smallholder farmers throughout Central Africa, particularly in the Democratic Republic of Congo (DRC). This status is threatened, however, by cassava brown streak disease (CBSD), ...

    Abstract Cassava plays a key role in ensuring food security and generating income for smallholder farmers throughout Central Africa, particularly in the Democratic Republic of Congo (DRC). This status is threatened, however, by cassava brown streak disease (CBSD), which has expanded its incidence and range in eastern DRC. The study described here comprises the first extensive assessment of temporal change in the occurrence of CBSD and its causal viruses in DRC, based on surveys conducted during 2016 and 2018. Cassava fields were inspected in Ituri, Nord-Kivu, Sud-Kivu, Tanganyika, and Haut-Katanga provinces within eastern DRC to record foliar incidence and severity of CBSD. Leaf samples were collected for virus detection and species-level identification. New occurrences of CBSD, confirmed by virus diagnostic tests, were recorded in two provinces (Haut-Katanga and Sud-Kivu) and nine previously unaffected territories, covering an area of >62,000 km2, and at up to 900 km from locations of previously published reports of CBSD in DRC. Overall, average CBSD incidence within fields was 13.2% in 2016 and 16.1% in 2018. In the new spread zone of Haut-Katanga, incidence increased from 1.7 to 15.9%. CBSD is now present in provinces covering 321,000 km2, which is approximately 14% of the total area of DRC. This represents a major expansion of the CBSD epidemic, which was only recorded from one province (Nord-Kivu) in 2012. Both Cassava brown streak virus (CBSV) and Ugandan cassava brown streak virus were detected in Ituri, Nord-Kivu, and Sud-Kivu, but only CBSV was detected in Haut-Katanga. Overall, these results confirm the increasing threat that CBSD poses to cassava production in DRC and describe an important expansion in the African pandemic of CBSD.
    Keywords cassava ; food security ; smallholders ; farmers ; plant diseases ; democratic republic of the congo
    Language English
    Publishing date 2021-12-21T11:01:55Z
    Publisher Scientific Societies
    Publishing country fr
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  10. Article: Screening African rice (Oryza glaberrima) for tolerance to abiotic stresses: I. Fe toxicity

    Sikirou, M / A. Shittu / K.A. Konaté / A.T. Maji / A.S. Ngaujah / K.A. Sanni / S.A. Ogunbayo / I. Akintayo / K. Saito / K.N. Dramé / A. Ahanchédé / R. Venuprasad

    Field crops research. 2018 May 01, v. 220

    2018  

    Abstract: Iron (Fe) toxicity is recognized as one of the most widely spread soil constraints for rice production especially in West Africa. Oryza glaberrima the cultivated rice species that originated from West Africa is well-adapted to its growing ecologies. The ... ...

    Abstract Iron (Fe) toxicity is recognized as one of the most widely spread soil constraints for rice production especially in West Africa. Oryza glaberrima the cultivated rice species that originated from West Africa is well-adapted to its growing ecologies. The aim of this study was to identify the promising O. glaberrima accessions tolerant to Fe toxicity from the 2106 accessions held at the AfricaRice gene bank. The screenings were conducted over a four-year period and involved evaluating the entries under Fe-toxic field conditions in West Africa, selecting good yielding accessions and repeating the testing with newly selected lines. Three accessions (TOG 7206, TOG 6218-B and TOG 7250-A) were higher yielding than O. sativa checks under stress but with similar yields under control conditions. These accessions yielded over 300g/m2 under both Fe toxicity and control conditions. In conclusion, these materials could be used as donors in breeding programs for developing high yielding rice varieties suited to Fe toxicity affected areas in West Africa.
    Keywords Oryza glaberrima ; abiotic stress ; breeding ; crop production ; gene banks ; iron ; rice ; screening ; soil ; toxicity ; Western Africa
    Language English
    Dates of publication 2018-0501
    Size p. 3-9.
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 435684-6
    ISSN 1872-6852 ; 0378-4290
    ISSN (online) 1872-6852
    ISSN 0378-4290
    DOI 10.1016/j.fcr.2016.04.016
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 3096: Show issues

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