Identification of “donors” possessing superior traits to adapt to low phosphorus (P) soils is a primary requirement to develop efficient crop plants for sustainable agricultural production. Diverse wheat (Triticum aestivum L., 89) and triticale (×Triticosecale Wittmack, 15) genotypes were phenotyped in soil with low and sufficient P for two seasons and once in the hydroponic system. Principal component analysis of relative biomass and grain weight revealed four clusters each for wheat and triticale. In low P soil, genotypes in the efficient cluster showed lesser reduction in total biomass, grain weight, total P uptake, and harvest index (HI), and improved P acquisition efficiency (PAE) and P harvest index (PHI) as compared to the inefficient cluster. In hydroponics, reduction in total biomass was less while root biomass and PAE increased at low P in the efficient genotypes. Out of 22 (soil) and 38 (hydroponics) P-efficient wheat genotypes, nine were overlapping in both screens while in P-inefficient cluster, out of 23 (soil) and 5 (hydroponics), three were common. A few P-efficient genotypes identified were DL784-3, DBW 16, and GW 322 and triticale TREAT, whereas P inefficient were C306 and ABACUS PVR (triticale). The selections in hydroponics are likely to be relevant in the field as demonstrated by overlapping of genotypes in both the mediums. Genotypic variations in P efficiency were strongly associated with P utilization rather than P uptake.

鉴定具有优良特性以适应低磷（P）土壤的“供体”是发展高效农作物以实现可持续农业生产的首要要求。小麦（Triticum aestivum L.，89）和小黑麦（× TriticosecaleWittmack，15）在低磷和充足磷的土壤中对基因型进行了表型分析，持续了两个季节，一次在水培系统中。相对生物量和谷物重量的主成分分析显示，小麦和黑小麦各有四个簇。在低磷土壤中，有效集群的基因型与总磷相比，总生物量，谷粒重量，总磷吸收量和收割指数（HI）降低幅度较小，并且磷吸收效率（PAE）和磷收割指数（PHI）有所提高。效率低下的集群。在水培法中，有效基因型在低磷条件下总生物量减少较少，而根生物量和PAE增加。在22种（土壤）和38种（水培）磷高效基因型中，有9种在两个筛选中都重叠，而在磷效率低的簇中，在23种（土壤）和5种（水培）中，三种很常见。鉴定出的一些P型有效基因型是DL784-3，DBW 16和GW 322和黑小麦TREAT，而P型无效的基因型是C306和ABACUS PVR（黑小麦）。正如两种培养基中基因型的重叠所证明的，水培法的选择可能与该领域相关。磷效率的基因型变化与磷的利用而非磷的吸收密切相关。