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Wyszukujesz frazę "Oduwaye, O.A." wg kryterium: Autor

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    Wyświetlanie 1-3 z 3
    Tytuł:
    Genetic variability and associations between grain yield and related traits in Amaranthus cruentus and Amaranthus hypochondriacus grown at two locations
    Autorzy:
    Oduwaye, O.A.
    Porbeni, J.B.O.
    Adetiloye, I.S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1080273.pdf
    Data publikacji:
    2016
    Wydawca:
    Instytut Ogrodnictwa
    Tematy:
    Amaranthus cruentus
    Amaranthus hypochondriacus
    genetic variability
    heritability
    path analysis
    grain yield
    inflorescence length
    morphological parameter
    Opis:
    For plant genetic improvement, it is paramount to determine genetic components for the selection of desirable traits. Eighteen Amaranthus cruentus and 11 Amaranthus hypochondriacus genotypes were evaluated at two locations in Nigeria differing in temperature/precipitation to determine the influence of environment on genetic gain. Genotype × environment was significant for all analysed morphological parameters and for grain yield, 1000 seed weight and no. of days to 50% flowering in A. cruentus. In A. hypochondriacus genotype × environment was significant for plant height, leaf length and width, leaf area, inflorescence length, 1000 seed weight and grain yield. Higher genotypic coefficient of variability, heritability estimates, and genetic advance was observed for the traits at Abeokuta (more wet) than Ibadan (more dry) conditions. Grain yield had positive association with the traits at the two locations except the number of leaves and inflorescence length. Inflorescence length was positively associated with grain yield at Abeokuta and negatively associated at Ibadan. Path analysis indicated simultaneous improvement of grain yield with petiole length and leaf length at Abeokuta but with petiole length and leaf area at Ibadan. In general, the locations had potential for genetic improvement of traits of amaranth grain; therefore, selection criteria for improving grain yield should be considered with respect to environment.
    Źródło:
    Journal of Horticultural Research; 2016, 24, 2; 91-99
    2300-5009
    Pojawia się w:
    Journal of Horticultural Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Genetic assessment of 23 cassava, Manihot esculenta Crantz, genotypes at two agroclimatic zones in Nigeria
    Autorzy:
    Oduwaye, O.A.
    Ojo, D.K.
    Mkumbira, J.
    Alake, C.O.
    Adenuga, O.
    Mapayi, E.F.
    Powiązania:
    https://bibliotekanauki.pl/articles/2199725.pdf
    Data publikacji:
    2012-12-20
    Wydawca:
    Instytut Hodowli i Aklimatyzacji Roślin
    Tematy:
    cassava
    FASTCLUS
    morphological performance
    G × E interaction
    Opis:
    This study investigated genetic diversity among 23 cassava genotypes  in two-agro-ecological zones (Ibadan and Mokwa), Nigeria. The experiment was conducted using a randomized complete block design with three replicates. The cassava genotypes were evaluated for tuber yield, fresh weight of tuber, number of tu- bers, tuber girth and length, dry matter and chlorophyll concentration. The data collected were subjected to analysis of variance and differences among the genotypes were computed using Duncan’s multiple range test. Single linkage cluster and FASTCLUS  analysis were used to group  the cassava genotypes. Genotypic and phenotypic coefficient of variability, heritability and genetic advance were also evaluated. Genotype, environ- ment and genotype × environment interaction (GEI) were significant (P < 0.01) for most of the traits evalu- ated. The magnitude of the environment was higher compared to genotype and GEI. Comparative mean per- formance varied from location to location. Tuber yield ranged from 0.32 for 92/0325 to 0.90 kg for 99/3073 with mean of 0.58 kg, and 0.16 kg for 82/00058 to 0.67 kg for 98/0581 with mean of 0.35 kg in Mokwa. Higher genotypic and phenotypic coefficients of variability were observed in Ibadan than Mokwa, for most of the characters. The interrelationships among the characters revealed the superiority of some cassava genotypes for a character  in one location and not in the other location. However, breeding potentials exists among the cassava genotypes across the two environments.
    Źródło:
    Plant Breeding and Seed Science; 2012, 67; 103-114
    1429-3862
    2083-599X
    Pojawia się w:
    Plant Breeding and Seed Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Seeds and seedlings vigour in tropical maize inbred lines
    Autorzy:
    Adebisi, M.A.
    Kehinde, T.O.
    Porbeni, J.B.O.
    Oduwaye, O.A.
    Biliaminu, K.
    Akintunde, S.A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2199724.pdf
    Data publikacji:
    2012-12-20
    Wydawca:
    Instytut Hodowli i Aklimatyzacji Roślin
    Tematy:
    correlation
    genetic advance
    heritability
    seed quality
    variability
    Opis:
    Seed and seedling vigour is an aspect of seed quality which affects field establishment and performance. Low maize yields have been reported  to be affected by several factors in which poor quality seed with low seed and seedling vigour. Information is scarce on seed and seedling vigour in maize inbred lines developed for tropical environments. Fifteen genotypes of tropical maize (Zea mays L.) inbred lines were evaluated to determine the level of differences in seed and seedling vigour traits, and extent of relationships among traits and their heritability. A substantial amount of genetic variability was found, which suggested that most of the traits under study could be improved through selection and utilized in breeding programs. Positive and signifi- cant interrelationship  among  seed germination  and seedling  traits  and  a positive  correlation  between  seed germination and seed vigour and field emergence showed that these could be given due consideration in crop improvement for seed and seedling vigour. High genotypic coefficient of variation, heritability and genetic advance were obtained for seed germination, seed emergence, shoot length and seedling vigour index I and II, revealing the possibility of improvement in these characters through direct selection. The principal component analysis (PCA) identified seed emergence, shoot length, seedling vigour index I and II and tetrazolium vigour as characters that contributed greatly to variation in seed vigour in the maize inbred lines. Cluster analysis partitioned the genotypes into two groups, with group I consisting of seven genotypes and group II comprised the other eight genotypes, which suggested that hybridization between the two groups could lead to high level of heterosis. Genotype V5  had superior seedling vigour traits compared to other genotypes. Seedling emer- gence, shoot length, seedling vigour index I, seedling vigour index II and tetrazolium vigour are effective characters for good seedling vigour traits in maize inbred lines investigated.
    Źródło:
    Plant Breeding and Seed Science; 2012, 67; 87-102
    1429-3862
    2083-599X
    Pojawia się w:
    Plant Breeding and Seed Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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