TY - JOUR AU - Yasin, Ghulam AU - Altaf, Adeela AU - ul Haq, Ikram AU - Saima, Shahzadi AU - Sameen, Saira PY - 2022/04/12 Y2 - 2024/03/28 TI - Time course variations in ameliorative potentials of spermidine and kinetin for chromium toxicity - growth analysis indices of four Vigna mungo L. genotypes JF - Emirates Journal of Food and Agriculture JA - Emir J Food Agric VL - 34 IS - 3 SE - Research Article DO - 10.9755/ejfa.2022.v34.i3.2836 UR - https://ejfa.me/index.php/journal/article/view/2836 SP - AB - <p>The experimental studies were performed for finding antagonistic role of PGRs viz., Kinetin a Polyamine (Spermidine) for soil supplied <br>Chromium toxicity on mash genotypes with age. Four varieties i.e., 80, 88, 97 and ES-1 were sown. Earthen pots were used and placed <br>in complete randomization arrangement. Chromium (Cr) doses were applied @ 30mg/kg and 60mg per kg soil. This was done by adding <br>CrCl3 salt in solutions form after 30 days of sowing. Spermidine and Kinetin were sprayed as 1.0 mM and 100.0 mM solutions respectively <br>after 30 and 40 days of sowing. Growth analysis studies were carried when plants were of 30 and 46 days age. Chromium (Cr) at low <br>level of concentrations in soil lowered the relative increase in plant height more effectively during growth interval 2 while, at higher <br>toxicity levels, metal affected the shoot growth in the growth interval 1. Kinetin spray decreased the relative increase in plant height <br>during growth interval 1while, Spermidine affected so during growth interval 1, increased the parameter. Chromium, at both levels of its <br>concentration in soil, decreased the root growth rate more effectively during growth interval 2. Kinetin reduced relative increase in root <br>length during growth interval 1 and increased it in the next growth interval. However, Spermidine effects started in the growth interval <br>1 and reached its maximum during growth interval 2. Chromium at lower concentration (30mg/kg soil) decreased the relative increase <br>in leaf area during both intervals of growth. Exogenous Kinetin positively affected relative increase in leaf area and its effect being more <br>pronounced in Ist interval of growth. Spermidine affected this attribute in the same manner but to lesser extent. Metal toxicity became <br>effective during growth interval 2. Kinetin and Spermidine application to plants increased the net assimilation rate during both intervals <br>comparatively more in growth interval</p> ER -