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Articles by Angeline van Biljon
Total Records ( 2 ) for Angeline van Biljon
  Angeline van Biljon , Maryke Labuschagne and Elizma Koen
  The aim of this study was to investigate the potential of simple sequence repeats as genetic markers in five species of the Solanum nigrum complex found in South Africa as well as their progeny. Some of the primers developed for sorghum, tomato, pepper and potato were used. Twenty-nine random sets of primers were selected for screening and seven were used to amplify each of the parents and their progeny. The optimum conditions were not the same for the various primer pairs with annealing temperatures of 45, 50 and 55 °C for different primers. The genetic-distance value amongst the species and their progeny varied from 0.33 to 0.55, showing the close relationship between entries and confirming the fact that the Solanum nigrum complex is a group of plants very closely related, yet the parents and their progeny could be clearly distinguished. This marker system therefore was very effective in distinguishing closely related accessions arising from a similar pedigree and could be used for molecular breeding in this species.
  Abe Shegro , Maryke T. Labuschagne , Nemera Geleta Shargie and Angeline van Biljon
  In Ethiopia, sorghum is grown for food and cash income by subsistence farmers. The study was conducted at the experimental farm of the Agricultural Research Council, Grain Crops Institute at Potchefstroom, South Africa. A total of 31 sorghum landrace accessions were used for chemical analysis. The objective of this study was to determine the extent of genetic diversity in nutritional composition of sorghum landraces from western Ethiopia. Sorghum whole grains were analyzed for crude protein, total starch and its component and mineral profile (calcium, magnesium, potassium, phosphorus, iron, manganese, zinc and sodium). The Principal Component Analysis (PCA) revealed that the first four principal components contributed 71.77% of the variability among sorghum landrace accessions. Mineral elements such as zinc, manganese, magnesium, phosphorus and protein contributed more divergence to the first Principal Component (PC1), while iron, sodium and calcium contributed to the second Principal Component (PC2). Cluster analysis of mineral elements, protein, total starch and sugar contents resulted in five distinct groups of accessions with genetic distances ranging from 0.78-1.52. Therefore, the chemical compositions provide a useful measure of genetic divergence among sorghum landrace accessions to identify potential donors or parental lines for future sorghum quality improvement effort.
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