Flores-Sánchez Ignacio Darío, Sandoval-Villa Manuel, Uscanga-Mortera Ebandro
Postgraduate in Edaphology, Colegio de Postgraduados, Mexico-Texcoco Highway, km 36.5, Montecillo, Texcoco 56264, Mexico.
Postgraduate in Botany, Colegio de Postgraduados, Mexico-Texcoco Highway, km 36.5, Montecillo, Texcoco 56264, Mexico.
Plants (Basel). 2025 Apr 4;14(7):1124. doi: 10.3390/plants14071124.
The nutrient uptake of a species under cultivated conditions is important for program fertilization. The genus has two semidomesticated species, and , used as food and considered with potential for their study in controlled environments. The objective of this research was to determine nutrient uptake curves of these species in a greenhouse and using hydroponics. The research was carried out at the Colegio de Postgraduados, Campus Montecillo, Texcoco, State of Mexico, from August to November 2020. The treatments included the following: two species and three electrical conductivity levels: 1, 2, and 3 dS m. Nutrients in leaf and total dry matter (TDM) were determined. Variability between species and phenological stages on the nutrient concentration and accumulation of TDM was observed. For macronutrients, concentrated in descending order more P from the vegetative stage (4.21-2.43 g kg dry matter), and Mg until fructification (4.92-3.26 g kg dry matter), for K it was higher at vegetative (52.29 g kg dry matter) and harvesting stages (26.05 g kg dry matter), and N (23.92 g kg dry matter) at flowering; concentrated more Ca from fructification (10.10-13.85 g kg dry matter). For micronutrients, concentrated more Fe from the vegetative stage (157.7-207.5 mg kg dry matter), B and Zn at 23.3-38.4 and 26.04-28.45 mg kg dry matter, respectively, from flowering, and Mn (108.4-232.28 mg kg dry matter) from fructification. The main structures of TDM accumulation by vegetative stage in were the leaf and root (vegetative and flowering), root and stem (fructification), and reproductive structures and root (harvesting); in , the main structures were the leaf and root (vegetative), root and leaf (flowering and fructification), and root and reproductive structures (harvesting). Due to this variability, specific fertilization programs are required for each species.
在栽培条件下，一个物种的养分吸收对于配方施肥很重要。该属有两个半驯化物种，即[物种名称1]和[物种名称2]，用作食物，并被认为有在可控环境中进行研究的潜力。本研究的目的是在温室中采用水培法确定这些物种的养分吸收曲线。该研究于2020年8月至11月在墨西哥州特斯科科市蒙特西略校区的研究生学院进行。处理包括以下内容：两个物种和三个电导率水平：1、2和3 dS m。测定了叶片和总干物质（TDM）中的养分。观察到物种之间以及物候阶段对养分浓度和TDM积累的差异。对于大量元素，[物种名称1]在营养阶段（4.21 - 2.43 g/kg干物质）积累的磷最多，在结果期积累的镁最多（4.92 - 3.26 g/kg干物质），钾在营养期（52.29 g/kg干物质）和收获期（26.05 g/kg干物质）含量较高，氮在开花期（23.92 g/kg干物质）含量较高；[物种名称2]在结果期积累的钙最多（10.10 - 13.85 g/kg干物质）。对于微量元素，[物种名称1]在营养阶段积累的铁最多（157.7 - 207.5 mg/kg干物质），硼和锌分别在开花期含量为23.3 - 38.4 mg/kg干物质和26.04 - 28.45 mg/kg干物质，锰在结果期（108.4 - 232.28 mg/kg干物质）含量较高。[物种名称1]在营养阶段TDM积累的主要结构是叶和根（营养期和开花期）、根和茎（结果期）以及生殖结构和根（收获期）；[物种名称2]的主要结构是叶和根（营养期）、根和叶（开花期和结果期）以及根和生殖结构（收获期）。由于这种差异，每个物种都需要特定的施肥方案。
