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Now showing items 1-10 of 116
Transfer of genetic resistance to the Russian wheat aphid from rye to wheat
(Stellenbosch : Stellenbosch University, 1997-03)
ENGLISH ABSTRACT: An octoploid triticale was derived from the F1 of a Russian wheat aphid
resistant rye, 'Turkey 77', and 'Chinese Spring' wheat. The alloploid was
crossed (a) to common wheat, and (b) to the 'Imperial' ...
Identification of molecular markers linked to woolly apple aphid (Eriosoma lanigerum) (Hausmann) resistance in apple
(Stellenbosch : Stellenbosch University, 2003-12)
ENGLISH ABSTRACT: Apple (Malus x domestica Borkh.) is an important horticultural crop worldwide and in the Western
Cape. The income generated from apple and other deciduous fruit production amounts to
approximately 25% ...
Genetic mapping of adult plant stripe rust resistance in the wheat cultivar Kariega
(Stellenbosch : Stellenbosch University, 2003-04)
ENGLISH ABSTRACT: Stripe (yellow) rust of wheat, caused by Puccinia striiformis f.sp. tritici, was first detected as a
single introduction into South Africa in 1996. Two additional pathotypes have since been
identified. ...
Optimization of gene transfer in Haliotis midae by means of polyplex mediation
(Stellenbosch : Stellenbosch University, 2010-12)
ENGLISH ABSTRACT: Haliotis midae is the most important aquaculture species in South Africa, with abalone
farming contributing 80% of the Rand value of the aquaculture industry. Although genetic
research has benefited the ...
Mapping of chromosome arm 7DL of Triticum aestivum L.
(Stellenbosch : University of Stellenbosch, 2005-03)
The Russian wheat aphid, Diuraphis noxia (Mordvilko), is a serious insect pest of wheat and
barley. It affects the quality and yield of grain by sucking plant sap from the newest growth
whilst toxic substances are injected ...
Mapping and restructuring of an Ae. kotschyi derived translocation segment in common wheat
(Stellenbosch : University of Stellenbosch, 2010-12)
ENGLISH ABSTRACT: The wild relatives are an important source of new genes for the genetic improvement
of wheat. At Stellenbosch University the leaf and stripe rust resistance genes Lr54 and
Yr37 were transferred from ...
The effect of triploidy on the growth and survival of the indigenous abalone, Haliotis midae, over a 24 month period under commercial rearing conditions
(Stellenbosch : Stellenbosch University, 2008-03)
ENGLISH ABSTRACT: Triploidy is the genetic state of containing three sets of chromosomes per cell in stead of two
as in diploid organisms. The South African abalone (Haliotis midae) is naturally a diploid
organism that ...
Sequencing and detection of a new strain of grapevine leafroll-associated virus 3 in South Africa
(Stellenbosch : Stellenbosch University, 2012-12)
ENGLISH ABSTRACT: Grapevine leafroll-associated virus 3 (GLRaV-3) is the type member of the genus Ampelovirus in the family Closteroviridae and is considered to be the main contributing agent of grapevine leafroll disease ...
A comparative analysis of growth traits in Triploid and Diploid Genotypes of the South African abalone, Haliotis midae
(Stellenbosch : Stellenbosch University, 2011-12)
ENGLISH ABSTRACT: Abalone production is the largest financial contributor to aquaculture in South Africa and
practically all of the abalone produced is exported to Asia. This means that the product
must be globally ...
Microsatellite marker development and parentage assignment in Haliotis midae
(Stellenbosch : Stellenbosch University, 2008-03)
ENGLISH ABSTRACT: The five leading abalone producers in South Africa have initiated a genetic enhancement program for Haliotis midae in a collaborative effort to improve economically valuable traits. Several independent ...