Analysis of the factors that influence the quality of rapeseed and sunflower seeds and development of predictive models | OCL

Diversity of Plant Proteins extracted from Oil & Protein Crop / Diversité des protéines végétales issues des oléoprotéagineux

Open Access

Table 6

Factors impacting sunflower seed quality.

Factors	Type of variable	Modalities	DDM protein % 14 variables	Oil % 14 variables
Terres Inovia (TI) development regions	categorical	11 French regions	+	+
Soil texture	categorical		+	+
Varietal characteristics
•Potential DDM protein concentration	numerical (%)		+
•Potential oil concentration to standards	numerical (%)		+	+
•Maturity earliness	categorical	mid-early, mid-late, early, late	+	+
Plant density	numerical (plants m⁻²)		+	+
Sowing date	numerical (d)	days from Jan 1	+	+
Deviation from a priori X-rate of N fertilization	numerical (kg.ha⁻¹)		+	+
Radiation (PAR)
•from E4 to M0 stage	numerical (MJ.m⁻²)		+	+
•from M0 to M3 stage	numerical (MJ.m⁻²)		+	+
Climatic deficit (P-PET)
•from E4 to M0 stage	numerical (mm)		+	+
•from M0 to M3 stage	numerical (mm)		+	+
Number of days with
•Tmax> 30°C from E4 to M0	numerical (d)		+
•Tmax> 30°C from M0 to M3	numerical (d)		+
•Tmax> 32°C from E4 to M0	numerical (d)			+
•Tmax> 32°C from M0 to M3	numerical (d)			+
•Tmax> 34°C from sowing to E4	numerical (d)			+

(*) water deficit increases with negative values of P-PET; see Figure S2 for the identification of growth stages.

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