ENGLISH ABSTRACT: Chromosome arm 7DL of common wheat carries genes for agronomically important traits such as leaf rust, stem rust, Russian wheat aphid and eye spot resistance. Some of these genes occur on introgressed ...

ENGLISH ABSTRACT: In cross pollinated crops, recurrent selection is used to increase the frequency of desirable alleles by breaking up existing linkage blocks and forming new gene combinations. Despite promising results ...

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 ...

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. ...

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 ...

ENGLISH ABSTRACT: The detrimental effect of soil salinity on crop production is a growmg problem worldwide (Tanji, 1990b). The degree to which plants can tolerate high concentrations of salt in their rooting medium is ...

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% ...

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 ...

ENGLISH ABSTRACT: Despite numerous attempts involving a variety of target genes, the successful transgenic manipulation of sucrose accumulation in sugarcane remains elusive. It is becoming increasingly apparent that ...

ENGLISH ABSTRACT: Iron metabolism disorders comprise the most common disorders in humans. Hereditary haemochromatosis (HH) is a common condition resulting from inappropriate iron absorption. The most common form of the ...