Cosmos Magorokosho

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4. Discussion Availability of sufficient genetic variability is a key component for effective selection in any breeding program. In the absence of sufficient genetic diversity, exotic germplasm can be sourced and introduced to the program to introgress the required genes [32,33]. Generally, breeders conduct combining ability studies before using exotic germplasm in their breeding programs to identify good parents for the development of hybrids and superior parents to use in breeding cycles [16,34].

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