MOA-National Agricultural Research Station Kitale Annual Report 1969

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Ministry of Agriculture
The classical maize breeding, which involves inbreeding to produce inbreds or pure lines which later are crossed to form single crosses and double or 3-vmy crosses has been given 10VI priority since 1961. However, inbreeding to produce homozygous lines is &n essential breeding tool and inspite of its merits and demerits it has important sore in our breeding programme. During the recent years more emphasis has been placed on composite improvements during which the classical breeding is being phased out and composite breeding phased in, but it has been necessary to explore the possibi1i ty of utilizing both the established inbreds which are currently used in hybrids and the early generation lines from composite populations. Hence testing and maintenance of these lines as 'well as inbreds such as A, F, D and G, which are the parents of the current hybrids is in progress. All the established inbreds were developed from Kenya Flat White maize and since they were thoroughly selected and tested during the developmental stages no further improvement is deemed possible, but their continued superiority is invaluable in the programme