Genus Nicotiana F1 hybrid and use of same
AssigneeJapan Tobacco Inc.
InventorShun Yamauchi
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Abstract
An object of the present invention is to provide an F1 hybrid or a portion thereof, and use of the F1 hybrid or a portion thereof. The F1 hybrid of the present invention is an F1 hybrid between Nicotiana umbratica and Nicotiana kawakamii.
Claims31
An F1 hybrid plant between Nicotiana umbratica and Nicotiana kawakamii, or a portion thereof, said F1 hybrid plant having at least one of the characteristics selected from the group consisting of:
- a ratio (%) of height of a lowermost flower to grass height increases as compared to Nicotiana umbratica;
- a number of flowers per plant is smaller than that of Nicotiana umbratica;
- a leaf length or a leaf width of a largest leaf is longer than that of Nicotiana umbratica, or both of a leaf length and a leaf width of a largest leaf are longer than those of Nicotiana umbratica;
- a number of branches decreases as compared to the number of branches of Nicotiana umbratica;
- a yield of an above-ground part increases as compared to Nicotiana umbratica;
- a yield of dried leaves increases as compared to Nicotiana umbratica;
- insect resistance against a defoliator pest is improved as compared to Nicotiana kawakamii;
- insect resistance against a defoliator pest is improved as compared to both of Nicotiana kawakamii and Nicotiana umbratica;
- insect resistance against a stored-tobacco pest is improved as compared to Nicotiana kawakamii;
- and
- insect resistance against a stored-tobacco pest is improved as compared to both of Nicotiana kawakamii and Nicotiana umbratica.
A method for making an F1 hybrid plant, comprising hybridizing Nicotiana umbratica and Nicotiana kawakamii and choosing the F1 hybrid plant having at least one of the characteristics selected from the group consisting of:
- a ratio of a height of a lowermost flower to a grass height increased as compared to Nicotiana umbratica after hybridizing Nicotiana umbratica and Nicotiana kawakamii;
- a number of flowers per plant smaller than the number of flowers of Nicotiana umbratica after hybridizing Nicotiana umbratica and Nicotiana Kawakamii,
- a longer leaf length or a leaf width of a largest leaf or both of a longer leaf length and a leaf width of a largest leaf than Nicotiana umbratica after hybridizing Nicotiana umbratica and Nicotiana kawakamii;
- a number of branches decreased as compared to Nicotiana umbratica after hybridizing Nicotiana umbratica and Nicotiana kawakamii;
- a yield of an above-ground part increased as compared to Nicotiana umbratica after hybridizing Nicotiana umbratica and Nicotiana kawakamii;
- and
- a yield of dried leaves increased as compared to Nicotiana umbratica after hybridizing Nicotiana umbratica and Nicotiana Kawakamii.
Dependencies are inferred from the claim text.