สภาพการทดสอบความแข็งแรงเมล็ดพันธุ์ข้าวโดยวิธีเร่งอายุเมล็ดพันธุ์
ปฏิมาภรณ์ ใจเย็น นิติพงศ์ ประภาการ และ ธวัชชัย ทีฆชุณหเถียร
วารสารวิทยาศาสตร์เกษตร 44 (3พิเศษ): 565-568. 2556.
2556
บทคัดย่อ
Accelerated aging test is the most popular seed vigor test. However, the most accurate aging temperatures and times may be different in various rice varieties. The objective of this experiment was to identify the most accurate accelerated aging test conditions in seeds of Khao Dawk Mali 105, RD 15, RD 6 and Chai Nat 1 rice varieties. The experiment was conducted during 2011-2012 at Suranaree University of Technology. Seeds of Khao Dawk Mali 105, RD 15, RD 6 and Chai Nat 1 rice varieties of 30, 30, 31 and 33 samples, collected from various seed centers and having different levels of seed vigor, were tested for standard germination test, field emergence test and accelerated aging test at 440C for 64, 68, 72, 76 and 80 hours. In the multiple correlation analyses (r), the standard germination test and all accelerated aging conditions in all varieties showed highly correlations with the field emergence (p ≤0.01). The correlation between the standard germination and the field emergence of Khao Dawk Mali 105, RD 15, RD 6 and Chai Nat 1 were 0.663**, 0.504**, 0.785** and 0.698**, respectively. However, these correlations were markedly lower than those correlations between accelerated aging tests and the field emergence test. The most accurate accelerated aging times at 440C for seeds of Khao Dawk Mali 105, RD 15, RD 6 and Chai Nat 1 rice varieties were 72, 80, 64 and 80 hours, respectively. It can be concluded that accelerated test condition for seed vigor test in rice is varietal specific.