Genetic analysis indicated that the leaf colour mutant was controlled by a single recessive gene.

该叶色突变性状受隐性单基因控制。

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An automatic system to recognize tobacco leaf colour is established by using a scanner and a computer.

利用扫描仪和计算机建立了烟叶的自动辨色系统。

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Various potato varieties grew well on the medium and the plants on it were vigous and dark- green in leaf colour.

且适应不同品种的生长，苗生长健壮，叶色浓绿。

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Good colour sorters need to learn to tell three dozen leaf shades ranging from a deep brown to a rich green at a glance.

ECONOMIST: Cuban cigars