Browsing Research Articles (Plant Production and Soil Science) by UP Author "Verryn, Steve D."

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Estimates of genetic parameters and genetic gains for growth traits of two Eucalyptus urophylla populations in Zululand, South Africa

Van den Berg, Gert J.; Verryn, Steve D.; Chirwa, Paxie W.; Van Deventer, Francois Johannes (Taylor and Francis, 2016-08)

In South Africa, Eucalyptus urophylla is an important species due to its disease tolerance to fungal diseases like Crysoporthe austroafricana and the Coniothyrium sp. cankers. It is mainly planted as a parental species in ...
Genetic parameters of interspecific hybrids of Eucalyptus grandis and E.urophylla seedings and cuttings

Van den Berg, Gert J.; Verryn, Steve D.; Chirwa, Paxie W.; Van Deventer, Francois Johannes (JD Sauerlaender's Verlag, 2015-01)

The current E. grandis x E. urophylla hybrid breeding strategy of South Africa’s Forestry Industry is to maintain large breeding populations of both parental species in which parents are selected based on their general ...

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