Method of restoring male sterility in gramineous plants and...

A - Human Necessities – 01 – N

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A01N 63/00 (2006.01) A01G 7/06 (2006.01) A01N 37/10 (2006.01) A01N 39/04 (2006.01) A01N 43/38 (2006.01) A01P 21/00 (2006.01)

Patent

CA 2749158

Disclosed are a method and compound to insufficient pollen formation due to high-temperature and low-temperature stress, and restore pollen fertility. Also disclosed are a fertility restorative agent, which contains auxin as an active ingredient, and a method to restore fertility in gramineous plants that includes spraying auxins. Further disclosed are a fertility restorative agent, which contains a substance that hinders the effects of auxin as an active ingredient, and a method to restore rice fertility that includes spraying the substance that hinders the effects of auxin. It is preferable to use 10 -4M to 10 -7M indole-3-acetic acid (IAA), 4-chloroindole acetic acid, phenylacetic acid, 2,4-dichlorophenoxyacetic acid (2,4-D), .alpha.-naphthalene acetic acid (NAA), 2,6-dichlorobenzoic acid, indole [butyric] acid (IBA), 4-chlorophenoxyacetic acid, 5-chloroindazole ethyl acetate, naphthoxyacetic acid, or 2,4,5-trichlorophenoxyacetic acid as the auxin.

La présente invention porte sur un procédé et sur un composé pour permettre une formation de pollen, insuffisant en raison d'un stress provoqué par une haute température et une basse température, et pour restaurer la fertilité du pollen. L'invention porte également sur un agent de restauration de fertilité, qui contient de l'auxine en tant que principe actif, et sur un procédé pour restaurer la fertilité chez les plantes graminées, le procédé comprenant la pulvérisation d'auxines. L'invention porte en outre sur un agent de restauration de fertilité contenant une substance qui restreint les effets de l'auxine en tant que principe actif, et sur un procédé pour restaurer la fertilité du riz, le procédé comprenant la pulvérisation de la substance qui restreint les effets de l'auxine. Il est préférable d'utiliser 10-4M à 10-7M d'acide indole-3-acétique (IAA), d'acide 4-chloroindole-acétique, d'acide phénylacétique, d'acide 2,4-dichlorophénoxyacétique (2,4-D), d'acide a-naphtalène acétique (NAA), d'acide 2,6-dichlorobenzoïque, d'acide indole butyrique (IBA), d'acide 4-chlorophénoxyacétique, de 5-chloroindazole-acétate d'éthyle, d'acide naphtoxyacétique, ou d'acide 2,4,5-trichlorophénoxyacétique comme auxine.

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