International Sugar Journal

Recurrent selection cycles for pre-breeding in sugarcane: enhancing the sugar-accumulation potential in selection cycles* [Full subscriber]

Abstract         Progeny populations from sugarcane hybridization programs indicate that a very low proportion of these progenies carry the optimal genome composition favouring an increase in sugar content.  Pre-breeding is an effective way of introgressing new gene combinations into the existing background, increasing the frequency of favourable combinations and, thereby, the variability in the population.  This also identifies potential true-breeding parents for transmitting the desirable traits to progeny.  Convergent breeding and recurrent selection were used with a diverse base population to develop high-sugar genetic stocks.  The base population, comprising many high-sugar genotypes were crossed in all possible combinations, and were subjected…

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