Chromosome number and fruit size in Actinidia

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Chromosome number and fruit size in Actinidia
Chromosome number and fruit size in Actinidia

Some otherwise promising selections of Actinidia chinensis (kiwifruit) have fruit that are too small for successful commercialization. Wu et al. induce chromosome doubling using colchicine and measure subsequent fruit weight, size and crop load in the third year after planting and over 3 consecutive years. They find that for four female diploid genotypes the fruit of the autotetraploid regenerants are, on average, 50–60 % larger than the fruit of their respective diploid progenitors, a much bigger increase than would be produced by vine management techniques.


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