TY - JOUR AU - ANWAR, Ali AU - YU, Xianchang AU - LI, Yansu PY - 2020/03/31 Y2 - 2024/03/29 TI - Seed priming as a promising technique to improve growth, chlorophyll, photosynthesis and nutrient contents in cucumber seedlings JF - Notulae Botanicae Horti Agrobotanici Cluj-Napoca JA - Not Bot Horti Agrobo VL - 48 IS - 1 SE - Research Articles DO - 10.15835/nbha48111806 UR - https://www.notulaebotanicae.ro/index.php/nbha/article/view/11806 SP - 116-127 AB - <p style="text-align: justify;">Seed priming is a technique to improve seed germination, seedlings growth, uniformity and yield. The, present study was designed to, investigate the physiological mechanism of seed priming with GA<sub>3</sub> and KNO<sub>3</sub> on cucumber seedlings growth, chlorophyll, photosynthesis and nutrients uptake. The cucumber seeds were treated as; CK; control, T1; GA<sub>3</sub> 100 ppm, T<sub>2</sub>; GA<sub>3</sub> 200 ppm, T<sub>3</sub>; KNO<sub>3</sub> 1%, T<sub>4</sub>; KNO<sub>3</sub> 5%, before seed sowing. The results showed that seed priming with GA<sub>3</sub> and KNO<sub>3</sub> significantly increased the plant height, fresh and dry weight and strong seedling index. Moreover, chlorophyll a, chlorophyll b, chlorophyll a+b, carotenoid contents, net photosynthesis rate (Pn), stomatal conductance (Gs), transpiration rate (Tr) and intercellular CO<sub>2</sub> concentration in seed priming seedlings. In addition, seed priming significantly enhanced leaf macro and micro nutrient contents. Additionally, among various treatments GA<sub>3</sub> 200 ppm and KNO<sub>3</sub> 5% are found best. These results suggested that seed priming with GA<sub>3</sub> and KNO<sub>3</sub> synergistically promoted the chlorophyll contents, photosynthesis and nutrients uptake in cucumber seedlings, thus leading to improve plant growth.</p> ER -