KANDUNGAN KLOROFIL, PROLIN DAN KAROTEN SERTA PRODUKSI KEDELAI [GLYCINE MAX (L.) MERR.] YANG DITANAM PADA KONDISI CEKAMAN SALINITAS BERBEDA
Abstract
In areas with high salinity, not all plants can thrive optimally due to the inhibitory effects of elevated salinity on plant growth and production. Investigating the levels of chlorophyll, proline, and carotenoids, as well as the yield of soybean cultivar Grobogan under different salinity stress conditions, can provide insights into the growth and productivity capabilities of the plant. This endeavor represents an initiative to identify soybean varieties resilient to high salinity. The objectives of this study are as follows: 1. To determine chlorophyll content; 2. To ascertain proline content; 3. To assess carotenoid content; 4. To evaluate the yield of soybean cultivar Grobogan under varying salinity stress conditions. The research findings, which indicate elevated levels of chlorophyll, proline, and carotenoids, as well as increased yield following exposure to different salinity treatments, suggest that the Grobogan cultivar exhibits productivity at a salinity level of 120 mM NaCl. Carotenoid content, pod count, filled pod count, and weight per 100 seeds did not show significant changes compared to the control group. However, under salinity stress of 120 mM NaCl, the chlorophyll content was highest at 12,412 μg/ml, and the proline content reached 17,694 μmol proline/g. The percentage of empty pods at 120 mM NaCl salinity was lowest at 0.6%. The subsequent step involves direct cultivation of Grobogan soybeans in areas with high salinity or in agricultural lands with suboptimal irrigation practices.
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