Kenya Agricultural Research Institiute Mwea Annual Report 2008

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2008
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Kenya Agricultural Research Institiute
Abstract
Cotton plant is a self-pollinated crop, with about 5% -25% out crossing. There is therefore a possibility of genetically contamination when varieties are grown in close proximity to one another. It was necessary to maintain the genetic purity of the germplasm available to the centre, multiply and describe the germplasm recently acquired from the National Gene Bank of Kenya. Sixty one cotton germplasm kept by the breeders at KARl -Mwea were field rejuvenated. The germplasm were dry-planted at a spacing of 100 x 30 cm at the onset of 2007/2008 short rain season at KARI-Mwea. Weeds were controlled by hand while spraying chemicals controlled pests. Artificial self pollination (selfing) was undertaken and the seed stored.
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