Methods for improving growth and crop productivity of plants...

A - Human Necessities – 01 – N

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A01N 43/38 (2006.01) A01N 25/22 (2006.01) A01P 21/00 (2006.01)

Patent

CA 2536322

In agriculture when temperature and moisture deviate from the norm two things happen, plant growth suffers and disease flourishes. The Stoller model for plant growth states that proper hormone balance is necessary for optimum growth and performance. When growth conditions deviate from the norm, hormone balance is altered and plant growth suffers. This invention presents evidence to support this model and explain the relationship between hormone levels and plant growth. A clear understanding of this relationship will facilitate crop treatments aimed to eliminate these problems. Although we cannot control the climate, we can control the damage caused by environmental stresses by manipulating the levels and/or ratio of plant hormones in the different plant tissues. By adjusting the levels and/or ratios of hormones, particularly auxin and cytokinins in the root tissue, we can assist the plant in overcoming or compensating for this environmental stress.

Lorsque dans l'agriculture la température et le degré d'humidité s'écartent de la normale, deux phénomènes se produisent : la croissance des plantes est affectée et les maladies prolifèrent. Selon le modèle de Stoller pour la croissance végétale, un équilibre hormonal approprié est nécessaire pour une croissance et des rendements optimaux. Lorsque les conditions de croissance dévient de la normale, l'équilibre hormonal est altéré et la croissance des plantes en pâtit. Cette invention apporte des preuves à l'appui de ce modèle et explicite le rapport entre les niveaux d'hormones et la croissance des plantes. Une compréhension claire de ce rapport facilitera le choix de traitements agricoles visant à éliminer ces problèmes. Si nous ne pouvons pas agir sur le climat, nous sommes en revanche capables de limiter les dégâts causés par le stress environnemental en manipulant les niveaux et ou le rapport des hormones végétales dans les divers tissus de la plante. En ajustant les niveaux et/ou les ratios d'hormones, en particulier l'auxine et les cytokines dans le tissu des racines, nous pouvons aider la plante à surmonter et à compenser le stress environnemental.

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