Germination Test on Native Salt Tolerant Seeds ( Buchanania siamensis Miq.)Collected from Natural Saline and Non-Saline Soil
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Salt-affected areas in northeastern Thailand have been expanding for decades due to human activities including deforestation and salt mining. Buchanania Siamensis Miq. from the family Anacardiaceae is one of the salt tolerant species found in northeastern Thailand. Due to benefits such as food, shading, and medicine, B. siamensis is a promising species for future restoration in salt-affected areas. Since germination is the most sensitive stage of plant growth, seeds germinated under high saline concentration are preferable. The aim of this study was to investigate the germination of B. siamensis seeds at various salt concentration levels and to compare seeds collected from saline and non-saline mother trees. The hypothesis was that seeds collected from saline areas would germinate under higher salt concentration when compared to those collected from non-saline areas. Soil and seed characteristics were investigated. Seeds collected from both locations were tested with NaC1 solutions of five concentrations (0, 5, 15, 25, and 35 dS m-1 ). The soil salt concentration, pH, bulk density, and moisture content in the saline area were significantly greater than those in the non-saline soil. Seeds collected from the non-saline area were larger in size, heavier, and had a greater moisture content when compared to seeds collected from the saline area. The total germination of seeds collected from both locations was not significantly different and was in the range of 80-95%. Germination decreased only at the highest salt concentration (35 dS m-1 ) which was about 60-80%. High salt concentration delayed the time to germinate from 6 to 13 days after placing in the germination box. However, germination of seeds collected from the non-saline area was more rapid than those collected from the saline area when the salt concentration increased. For restoration purposes, germinated seeds under high salinity are preferred, which can be chosen from large and heavy seeds based on this study.
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ข้าพเจ้าและผู้เขียนร่วม (ถ้ามี) ขอรับรองว่า ต้นฉบับที่เสนอมานี้ยังไม่เคยได้รับการตีพิมพ์และไม่ได้อยู่ในระหว่างกระบวนการพิจารณาตีพิมพ์ลงในวารสารหรือสิ่งตีพิมพ์อื่นใด ข้าพเจ้าและผู้เขียนร่วม (ถ้ามี) ยอมรับหลักเกณฑ์และเงื่อนไขการพิจารณาต้นฉบับ ทั้งยินยอมให้กองบรรณาธิการมีสิทธิ์พิจารณาและตรวจแก้ต้นฉบับได้ตามที่เห็นสมควร พร้อมนี้ขอมอบลิขสิทธิ์ผลงานที่ได้รับการตีพิมพ์ให้แก่วารสารวนศาสตร์ คณะวนศาสตร์ มหาวิทยาลัยเกษตรศาสตร์ กรณีมีการฟ้องร้องเรื่องการละเมิดลิขสิทธิ์เกี่ยวกับภาพ กราฟ ข้อความส่วนใดส่วนหนึ่ง หรือ ข้อคิดเห็นที่ปรากฏในผลงาน ให้เป็นความรับผิดชอบของข้าพเจ้าและผู้เขียนร่วม (ถ้ามี) แต่เพียงฝ่ายเดียว และหากข้าพเจ้าและผู้เขียนร่วม (ถ้ามี) ประสงค์ถอนบทความในระหว่างกระบวนการพิจารณาของทางวารสาร ข้าพเจ้าและผู้เขียนร่วม (ถ้ามี) ยินดีรับผิดชอบค่าใช้จ่ายทั้งหมดที่เกิดขึ้นในกระบวนการพิจารณาบทความนั้น”
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