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    Wyświetlanie 1-5 z 5
    Tytuł:
    Analysis of genetic parameters on Ethiopian mustard (Brassica carinata A. Braun) genotypes in northwestern Ethiopia
    Autorzy:
    Walle, Tesfaye
    Wakjira, Adugna
    Mulualem, Tewodros
    Powiązania:
    https://bibliotekanauki.pl/articles/2199737.pdf
    Data publikacji:
    2014-06-19
    Wydawca:
    Instytut Hodowli i Aklimatyzacji Roślin
    Tematy:
    Ethiopian mustard
    genotype
    heritability
    phenotype
    variability
    Opis:
    This study was carried out with the objective to estimate the genotypic variability and other yield related traits of Ethiopian mustard in North West Ethiopia. A total of 36 genotypes of Ethiopian mustard were considered for this study. Analysis of variance was computed to contrast the variability within the collected genotypes based on yield and other yield related traits. The results revealed highly significant values(p<0.01) for days to maturity, grain filling period, number of pod per plot, secondary branches per plant, harvest index, seed yield per plot, seed yield per hectare and oil content. Significant differences (p<0.05) were noted for days to flowering, plant height, primary branch per plant, biomass per plot, oil yield per plot differences among the genotypes. Genotypic coefficient of variation (GCV %) was lower than phenotypic coefficient of variation (PCV %) for all the traits studied. High genetic advance with heritability was observed in the following characters; plant height, biomass of the plant, number of secondary branch per plant and grain filling period. There are variations in the extent of genetic variability, heritability and genetic advance of traits which can facilitate selection for further improvement of important traits of Ethiopian mustard. Therefore, it can be concluded that the variability within Ethiopian mustard genotypes collected from different areas of northern Ethiopia is high and vital for better crop improvement.
    Źródło:
    Plant Breeding and Seed Science; 2014, 69; 25-34
    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
    Tytuł:
    Inwentaryzacja zasobów drzewnych w urządzaniu lasu w Polsce
    Inventory of timber resources in forest management in Poland
    Autorzy:
    Jaszczak, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1015664.pdf
    Data publikacji:
    2008
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    inwentaryzacja
    Polska
    zasoby drzewne
    lesnictwo
    urzadzanie lasu
    quercus robur
    pedunculate oak
    variability
    heritability
    Opis:
    The paper presents the comparison of heritability of height and diameter at breast height (dbh) in 7−11− year−old pedunculate oak trees from 5 provenances and 55 families. The provenance heritability for five successive years was high: 0.19−0.80 for height and 0.59−0.87 for dbh. Family heritability was moderate ranging 0.39−0.52 for height and 0.34−0.49 for dbh, while individual−tree heritability values was the lowest equalling 0.08−0.15 for height and 0.06−0.14 for dbh.
    Źródło:
    Sylwan; 2008, 152, 05; 14-25
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Variability in inflorescences in various variety types of common sunflower [Helianthus annuus L.]
    Zmiennosc kwiatostanow roznych typow odmian slonecznika zwyczajnego [Helianthus annuus L.]
    Autorzy:
    Kluza-Wieloch, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/878442.pdf
    Data publikacji:
    2005
    Wydawca:
    Uniwersytet Przyrodniczy w Poznaniu
    Tematy:
    variability
    Przybroda Experimental Station
    Helianthus annuus
    plant cultivar
    heritability
    Polska
    common sunflower
    sunflower
    botany
    Poznan city
    Wielkopolska region
    Źródło:
    Roczniki Akademii Rolniczej w Poznaniu. Botanika-Steciana; 2005, 08
    1896-1908
    Pojawia się w:
    Roczniki Akademii Rolniczej w Poznaniu. Botanika-Steciana
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Porównanie odziedziczalności proweniencyjnej, rodowej i indywidualnej cech wzrostowych dębu szypułkowego (Quercus robur L.) w doświadczeniu rodowo−proweniencyjnym w Nadleśnictwie Milicz
    Comparison of provenance, family and individual heritability of growth traits in pedunculate oak [Quercus robur] in the family-provenance trial in the Milicz Forest District
    Autorzy:
    Barzdajn, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/1015662.pdf
    Data publikacji:
    2008
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    odziedziczalnosc
    zmiennosc cech
    wzrost roslin
    rody hodowlane
    proweniencje
    wysokosc drzew
    Quercus robur
    lesnictwo
    piersnice drzew
    dab szypulkowy
    drzewa lesne
    quercus robur
    pedunculate oak
    variability
    heritability
    Opis:
    The paper presents the comparison of heritability of height and diameter at breast height (dbh) in 7−11− year−old pedunculate oak trees from 5 provenances and 55 families. The provenance heritability for five successive years was high: 0.19−0.80 for height and 0.59−0.87 for dbh. Family heritability was moderate ranging 0.39−0.52 for height and 0.34−0.49 for dbh, while individual−tree heritability values was the lowest equalling 0.08−0.15 for height and 0.06−0.14 for dbh.
    Źródło:
    Sylwan; 2008, 152, 05; 52-59
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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