这种植物种群数量的“大爆炸”是在古代植物染色体组加倍时发生的。染色体组加倍给植物提供了大量具有新功能的基因，这些新基因又形成了新特性。
These "big bangs" in plant evolution occurred when the genomes of ancient plants duplicated, providing vast Numbers of new genes that could take on new functions and lead to new traits.
由此说明，基因型对秋水仙碱处理离体小孢子诱导染色体加倍的反应不同。
This indicated that different response existed in some distinct genotypes to chromosome doubling through treating in vitro microspores with colchicine.
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