Growth and yield can be decoupled in lentil whereby excessive vegetative growth leads to self-shading, reduced pod and seed set, low harvest index and higher risk of disease and lodging. We evaluated the degree of coupling between growth and yield in 20 lentil lines grown in eight environments varying in water and photothermal conditions returning a 10-fold yield range, from 21 to 221 g m⁻². Calibration curves between shoot biomass and canopy cover measured with NDVI and green canopy cover measured with Canopeo app were improved with canopy height as a multiplication factor returning a 3-D trait. Calibration curves were used to phenotype shoot biomass and calculate crop growth rate.

For the pooled data, yield correlated non-linearly with crop growth rate, with an x-intercept of 0.09 g m⁻² [^oCd]^-1, suggesting a minimum plant size for reproduction, and an inflection point at 0.43 g m⁻² [^oCd]^-1. Yield correlated with biomass and crop growth rate in the more stressful conditions (yield ≤ 107 g m⁻²) and was decoupled in higher yielding conditions (yield ≥ 170 g m⁻²). Yield associated with harvest index at all yield levels, but more strongly in high-yielding conditions. Biomass and harvest index correlated in environments with yield ≤ 107 g m⁻², and decoupled under more favourable conditions (yield ≥ 170 g m⁻²). Yield associated with phenology under stress but not in favourable conditions. For the combination of lines and environments in this study, broad sense heritability was 0.96 for flowering time, 0.93 for harvest index, 0.89 for yield, 0.87 for crop growth rate and 0.39 for biomass. Selection for harvest index would improve yield across environments whereas selection for growth rate could further improve yield under stress. Agronomic practices to improve the coupling of yield and growth under favourable conditions need to be explored; for example, using precision seeding to reduce rectangularity of crop arrangement and favour penetration of radiation into the canopy and pod set.

扁豆中的生长和产量可以解耦，从而过度的营养生长会导致自身遮光，豆荚和种子结实减少，收割指数低以及疾病和倒伏的风险增加。我们评估了在八个环境中生长的20个扁豆品系在生长和产量之间的耦合程度，这些环境在水和光热条件不同的情况下返回了10倍的产量范围（从21到221 gm ^-2）。使用冠层高度作为返回3D特性的倍增因子，使用NDVI和Canopeo应用程序测量的绿色冠层覆盖之间的标本生物量和冠层覆盖之间的校准曲线得到了改善。使用校准曲线对芽生物量进行表型分析并计算作物生长速率。

对于汇总数据，产量与作物生长速率呈非线性相关，x截距为0.09 gm ^-2 [ ^o Cd] ^-1，表明繁殖的最小植物大小，拐点为0.43 g m ^-2 [ ^[ Cd] ^-1。在更高的胁迫条件下（产量≤107 g m ^-2），产量与生物量和作物生长速率相关，而在更高的产量条件下（产量≥170 g m ^-2），产量与产量解耦。在所有产量水平下，产量均与收获指数有关，但在高产条件下，产量更为明显。产量≤107 g m ^-2的环境中生物量和收获指数相关，并在更有利的条件下解耦（产量≥170 g m ^-2）。在压力下但在有利条件下，与物候相关的产量。对于本研究中的线条和环境的组合，广义遗传力在开花时间为0.96，收获指数为0.93，产量为0.89，作物生长速率为0.87，生物量为0.39。选择收获指数可以提高整个环境的产量，而选择生长速率则可以进一步提高胁迫条件下的产量。需要探索在有利条件下改善产量与生长耦合的农艺方法；例如，使用精确播种可减少农作物排列的矩形性，并有利于将辐射穿透到树冠和豆荚组中。