Growth, Developmentm Biochemical Changes and Maturity Indice of Large Edible-Podded Peas (Pisum sativum var. macrocarpon)

บทคัดย่อ

The study on growth, biochemical changes and maturity indice of large edible-podded peas showed that the development pattern of the pod representing by size, fresh weight and dry weight followed the simple sigmoid curve. At the initial stage, soluble solids, ascorbic acid and protein content in pericarp and seed decreased but total nonstructural carbohydrates (TNC) and reducing sugar (RS) increased. Later on, TNC and RS in pericarp decreased as the pod became more muture. Fiber content of pericarp steadily increased until the pod was harvested. The harvesting indice can be predicted by flowering time, heat units and thickness of the pod, The best time to harvest the large-pod type was at 6-7 days after flowering. This stage, there were 972.3-994.1 GDD heat units and 0.53-0.64 cm thickness of the pod.