ABSTRACT

Salinity is a global challenge to agriculture production. Cicer arientinum L. grows under wide range of climatic conditions and is highly sensitive to salt stress. Salt stress causes osmotic, ionic and secondary stress, impairing various metabolic processes in plants and eventually results in a decline in the plant yield. The aim of the present study was to study the effect of salinity on morphological, anatomical and ionic responses of chickpea seedlings of the genotype PBG-7. Three NaCl concentrations (40 mM, 60 mM and 80 mM) with three replicates were investigated by conducting the experiments in petriplates and growth pouches. For the first 7 days, experiments were carried out in petriplates. Thereafter, the seedlings were transferred to the growth pouches of respective treatment and were maintained subsequently for 21 days. The results collectively suggest that salt stress negatively affected the xylem and phloem width along with the total biomass production. Further, the results indicated that salinity leads to an increase in the sodium ion content in the plants and was accompanied by a decline in K⁺/Na⁺ as well as Ca²⁺/Na⁺ ratio. Sodium ion content was found to be negatively correlated with all the measured parameters.

摘要

盐度是对农业生产的全球挑战。鹰嘴豆L.在广泛的气候条件下生长，并且对盐胁迫高度敏感。盐胁迫导致渗透，离子和次级胁迫，损害植物中的各种代谢过程，并最终导致植物产量下降。本研究的目的是研究盐度对PBG-7基因型鹰嘴豆幼苗的形态，解剖和离子反应的影响。通过在陪替氏培养皿和生长袋中进行实验，研究了三个重复的三个NaCl浓度（40 mM，60 mM和80 mM）。在最初的7天中，在陪替氏培养皿中进行实验。此后，将幼苗转移到相应处理的生长袋中，并随后保持21天。结果共同表明，盐胁迫对木质部和韧皮部宽度以及总生物量产生负面影响。此外，结果表明盐度导致植物中钠离子含量的增加，并伴随着钾含量的下降。⁺ / Na ⁺以及Ca ²⁺ / Na ^+的比率。发现钠离子含量与所有测量参数均呈负相关。