The rapid determination in controlled environments of parameters for predicting seedling growth rates in natural conditions

摘要: Summary Parameters which characterise the response of seedling growth rate to temperature and mean daily radiant exposure were determined for cultivars eight vegetable species two ornamental bedding plant using controlled environments. All grown approximately four weeks in a series environments consisting factorial combinations 20°C or 15°C with 7.78 0.98 MJ m-2 per day photosynthetically active radiation. Four had been used previously study glasshouse at different seasons. The parameters derived from used, light measurements glasshouse, predict shoot glasshouse. These predictions accounted 92% observed variance log dry weight experiments involving thirteen sowing date, each densities sampled on occasions. Equivalent data themselves same predictive exercise. Differences base growth, responsiveness relative (light), potential apparent between quantitatively characterised by parameters. To determine these cultivar requires equivalent one square metre environment growing area sixteen days. Such could be applied scheduling management crop production, particularly transplant production.