Improved oilseed brassica bearing an endogenous oil with...

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 5/04 (2006.01) A01H 5/00 (2006.01) A01H 5/10 (2006.01) A23D 9/00 (2006.01)

Patent

CA 2214721

An improved Brassica oilseed, an improved plant capable of forming the same, and an improved edible endogenous vegetable oil dereived from oilseed Brassica are provided. The edible endogenous vegetable oil of the present invention possesses an improved distribution of fatty acids following crushing and extraction in the absence of hydrogenation or other chemical or physical modification. The alpha-linolenic acid content is less than 3.5 percent by weight, the oleic acid content is at least 77 percent by weight, the total saturated fatty acid content is no more than 4.5 percent by weight, and the erucic acid content is no more than 2 percent by weight based upon the total fatty acid content. Each of the recited characteristics of the oil is controlled by genetic means and surprisingly is simultaneously expressed (e.g., in the field under conventional oilseed Brassica growing conditions) in the absence of cancellation as the result of the formation of the other recited traits. The improved Brassica oilseed is capable of forming upon germination a plant having satisfactory agronomic characteristics which yields following self-pollination Brassica oilseeds that possess the specified improved distribution of fatty acids within the oil that is present therein.

Divulgation d'une graine de plante oléagineuse du genre Brassica, d'une plante améliorée pouvant produire ladite graine et d'une huile végétale endogène comestible améliorée provenant de cette graine. L'huile végétale endogène comestible de la présente invention comporte une meilleure distribution d'acides gras suite au broyage et à l'extraction en l'absence d'hydrogénation ou de toute autre modification physique ou chimique. La teneur de cette huile en acide alpha-linolénique est inférieur à 3,5 pour cent en poids, sa teneur en acide oléique est d'au moins 77 pour cent en poids, sa teneur totale en acides gras saturés n'excède pas 4,5 pour cent en poids et sa teneur en acide érucique n'excède pas 2 pour cent en poids, mesurées par rapport à la teneur totale en acides gras. Chacune des caractéristiques énumérées de cette huile est contrôlée par des moyens génétiques et, de façon surprenante, est exprimée simultanément (c.-à-d. sur le terrain dans des conditions normales de culture de telles plantes) sans annulation résultant de l'apparition des autres caractéristiques énumérées. La graine oléagineuse améliorée de Brassica peut se former après germination une plante aux caractéristiques agronomiques satisfaisantes, qui produit après auto-pollinisation des graines oléagineuses de Brassica présentant la distribution d,acides gras améliorée spécifiée.

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