Interactive effect of moisture restriction and salicylic acid on biochemical responses in Phaseolus coccineus

The increase in water scarcity leads to consider the understanding of staple crops under these conditions, coupled with this, positive responses salicylic acid different crops, may be an option bringing fruition cultivation runner bean (Phaseolus coccineus). This study evaluated effect (SA) on biochemical P. coccineus, humidity restriction periods from January July 2019 and 2020, at Benemerita Autonomous University Puebla, Mexico. research consisted three levels drought: 30, 60 100% soil moisture; five SA: 0, 0.5, 1.0, 1.5 2.0 mM; two fertilization: non-fertilizer fertilizer [(00-60-30) sowing + (30N) foliar nitrogen grain filling stage] for growing periods. experimental design was factorial random blocks replications. results showed that application mM SA maintained highest relative content leaves (89.05%), as well chlorophyll a, b carotenoids (2.20, 1.11 0.90 µg.mL-1, respectively); glycinebetaine (24.80 µmol.g-1 DW) total soluble sugars (31.15 mg eq.glucose g-1 DW), excluding proline. did not protein fractions, even plants fertilizer; but effects were greater without hydric stress fertilization.