Effects of Submerged Condition, Temperature, and Ripening Stages on Viviparous Germination of Rice
2000
Ju Young-Cheoul | Han Sang-Wook Kyonggi-do Agricultural Research and Extension Services, Hwasung (Korea Republic)
Viviparous germination causes yield loss and quality deterioration of rice. This study was conducted to investigate varietal differences of the viviparous germination with different days after heading (DAH) and different temperatures. In the laboratory examination, the averaged germination rate of all varieties at 45DAH and at 25DAH was 79.9%, and 27.5% under the incubation at the temperature of 30 degrees/20 degrees (day/night) for 12 days. Andabyeo, Da- sanbyeo, and Nonganbyeo showed the lowest viviparous germination rates among the tested varieties. The shoot length of the viviparous germination measured 12 days after incubation at 30/20 degrees ranged from 21 to 53 mm, indicating significant deterioration of rice quality.
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