Unité PERSYST, UPR34, Système de pérennes , Centre de Coopération Internationale en Recherche Agronomique pour le Développement , F-34398 Montpellier , France.
Ecologie Systématique Evolution , Université Paris-Sud, CNRS, AgroParisTech, Université Paris-Saclay , 91400 Orsay , France.
J Agric Food Chem. 2019 Aug 21;67(33):9432-9440. doi: 10.1021/acs.jafc.9b04336. Epub 2019 Aug 12.
Potassium fertilization is commonly practiced in oil palm () plantations to increase yield. However, its effects on fruit oil content and composition are not well documented. Here, we conducted bunch, metabolomics, and oil composition analyses in two contrasting crosses ( × and × ) grown under different K fertilization conditions. K availability impacted bunch oil content, resulting in lower water content and higher oil proportion in fruit mesocarp, in × only, thus showing differential responses of crosses to K. Oil composition at maturity did not significantly change under low K conditions despite clear alterations in fruit metabolism associated with lipid production during maturation, demonstrating the resilience of oil biosynthetic metabolism. However, the analysis of variance in oil content (across K treatments and crosses) demonstrates that sugar availability, lipid synthesis rates, and metabolic recycling are all important in determining the oil content.
油棕种植园通常会进行钾肥施肥以提高产量。然而，其对果实油含量和成分的影响尚未得到充分记录。在这里，我们在不同的钾施肥条件下对两个具有对比性的杂交种（ × 和 × ）进行了束、代谢组学和油成分分析。钾的有效性影响了束油含量，导致果实中果皮的含水量降低，油比例升高，仅在 × 中出现，表明杂交种对钾的反应不同。尽管与成熟过程中脂质生产相关的果实代谢发生明显改变，但在低钾条件下，成熟时油成分并没有显著变化，表明油脂生物合成代谢具有弹性。然而，油含量的方差分析（跨钾处理和杂交种）表明，糖的可用性、脂质合成速率和代谢再循环对于确定油含量都很重要。
