Association mapping for root system architecture under varying levels of phosphorus application in Brassica juncea L. Czern & Coss.

Background: Low phosphate (Pi) availability causes severe decline in crop productivity worldwide. Root system architecture (RSAr) plays a crucial role in Pi uptake from soil and thereby improving phosphorus use efficiency (PUE) of plants. Studying the genetic variability of RSAr traits across various Pi levels offers insights for enhancing crop resilience to Pi deficiency.