我国科学家揭示马铃薯“身世之谜”

Core Insights - The research reveals that potatoes originated from an ancient hybridization event between the tomato group and the wild potato group approximately 9 million years ago, resulting in the unique tuber organ of potatoes [1] - The genetic contribution of the two parent species to potatoes is approximately 40% from the tomato group and 60% from the wild potato group [1] - The formation of tubers is attributed to the recombination and interactive regulation of alleles from the potato's ancestors, with key genes such as SP6A from the tomato group and IT1 from the wild potato group playing significant roles [1] Agricultural Significance - The tuber formation provides potatoes with survival advantages, including the ability to store water and starch, which helps them endure drought and cold seasons [1] - Potatoes can reproduce without seeds or pollination, as new plants can sprout directly from the buds on the tubers [1] - Potatoes are a crucial crop, with over 1.3 billion people globally relying on them as a staple food [1] Research Implications - The findings from Chinese scientists are expected to offer a new theoretical perspective for potato genetic breeding [1]