Optimizing irrigation timing to enhance crop yield through flowering pathway modulation

Overview

This research addresses one of the most critical challenges in agriculture: optimizing water use efficiency while maintaining or improving crop yield. The project challenges the classical agronomical assumption that nocturnal watering always impairs crop yield by favoring disease, instead proposing that strategic timing of irrigation can significantly boost productivity through modulation of the flowering pathway.

By investigating how water supply at different periods of the day shapes the expression of flowering-related genes, this work aims to deliver two practical outcomes: actionable irrigation timing recommendations for growers and identification of specific genes that can be targeted to enhance water use efficiency. Preliminary findings suggest that watering in the last hours of the day may accelerate flowering and fruit formation in tomato, with implications for multiple staple and high-value crops.

Technical specifications

Core research approaches:

• Screening across multiple crop species (tomato, soybean, maize, and rice) to evaluate how time-of-day watering impacts final yield
• Chemical treatments applied at different times of day to identify molecules that modulate the flowering pathway
• State-of-the-art approaches to identify candidate genes that improve water use efficiency
• Metabolic and genetic characterization of identified targets
• CRISPR-Cas9 gene editing to validate the effectiveness of candidate genes

Key scientific insights driving the research:

• Florigen has been shown to affect stomatal conductance, boosting water use efficiency
• Transpiration and nighttime temperature play relevant roles in maintaining yield across different crops
• Differential regulation of the flowering pathway influences plant height, architecture, and reproductive timing

Technology readiness level

This research is at an early-to-mid stage of development. Preliminary observations have been made regarding florigen's effect on stomatal conductance and the impact of late-day watering on tomato flowering and fruit formation. The next phase involves multi-species screening to verify whether time-of-day watering consistently impacts yield, followed by molecular identification of key regulators. Gene validation through CRISPR-Cas9 editing represents a critical step toward translating findings into practical breeding or management recommendations. The research is positioned to generate both agronomic best practices and genetic targets with commercial potential for crop improvement programs.