Hybridization and Heterosis of Desirable Metric Characters of Talinum triangulare Land-Races in South Eastern Nigeria

Nya, E. J.; Eka, M. J.
March 2008
International Journal of Plant Breeding & Genetics;2008, Vol. 2 Issue 1, p19
Academic Journal
The aim was to study their cross ability and heterosis of their desirable metric characters, so as to facilitate selections of parental cultivars for incorporation in breeding program for Talinum triangulare improvement in South Eastern Nigeria. The 42 resultants F1 hybrids and the parents were evaluated in a Randomized Complete Block Design (RCBD) at the Teaching and Research farms of the Michael Okpara University of Agriculture in 2003/2004. Significant differences at p>0.01 were observed in the morphological characters of the 7 land races and also among the F1 hybrids. All the cultivars were cross compatible and the F1 seeds were highly viable with highest means viability of 70% and lowest of 60%. Some of the F1 hybrids showed positive heterosis over mid-parents and beter-parents for such metric characters as plant height at flowering, number of branches per plant and at flowering, days to 50% flowering, number of leaves per plant, leaf area and fresh shoot yield. Heterosis was negative for characters like final plant height per plant, basal diameter and number of leaves at flowering. The positive heterosis observed in some of the hybrids is discussed as a good phenomenon for Talinum improvement.


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