Fakuta Et Al


Fakuta et al

Greener Journal of Agricultural Sciences Vol. 7 (4), pp. 082-089, June 2017.

 ISSN: 2276-7770 

Research Article

Manuscript Number: 031017034

(DOI: http://doi.org/10.15580/GJAS.2017.4.031017034)


Estimation of Heterosis for Seedling
Growth Traits in Gum Arabic Acacia
[L.] Wild


Fakuta NM1,Aba
DA2, Ado SG2,Usman IS2, and
Ojiekpon IF1


Research Institute of Nigeria, Gum Arabic Sub-Station, Gashua, Nigeria.

2Department of Plant
Science, Faculty of Agriculture, Institute for Agriculture Research, Ahmadu
Bello University, Zaria, Nigeria.


Aiming at estimating heterosis and identifying
superior Acacia senegal hybrids, six
provenances were selected based on their divergence in gum zinc and manganese
concentration and were crossed using in 6 x 6 half diallel mating scheme to
produce 15 F1 hybrids. The experiment was conducted in the nursery
in Gashua in 2014 and 2015 in a Randomized Complete Block Design (RCBD)
replicated three times. Percentage mid-provenance and better- provenance
heterosis was estimated for seedling growth traits. Molai x Gajiram1 revealed
maximum negative mid-provenance (-71.04%) and better- provenance (-77.17%)
heterosis for days to emergence and desirable positive better-provenance
heterosis (22.62%) for canopy diameter. Also Gajiram1 x Molai showed maximum
positive mid-provenance heterosis (125.11%) for number of primary branches
while Kukareta x Molai had maximum positive better-provenance heterosis
(88.27%) for the trait. Damaturu x Molai exhibited highest positive heterosis
over mid-provenance (65.15%) and better-provenance (47.30%) for bark thickness.
No significant positive heterosis was observed for seedling height, stem height
at first branching and stem diameter at both levels. The hybrids Gajiram1 x
Molai, Kukareta x Molai and Damaturu x Molai could be used for future breeding


Key Words: Gum
arabic; Acacia senegal; Provenance;
Heterosis; Seedling growth trait.

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