A Rice Nematode Disease "Senchu Shingare Byo" : Ⅱ. Hibernation of Aphelenchoides oryzae

概要

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The nematode can infect Italian millet and a sort of Fox-tail (Selaria viridis). Barnyard grass (Panicum crus-galli) is not the host plant. The nematode situates exo-parasitic within the folded youngest leaf of rice before the formation of the youngest ear. After the youngest ear is formed, it is found most frequently within the pubescence of the ear, but sometimes it enters the inner side of the young flowering glume. From the earing to the flowering stage, it is found commonly on the ear--outside of the flowering glume. At the flowering stage it usually enters the inner side of the flowering glume, and is found stuck to the inner wall of flowering glume until next spring. The number of the nematode found on well-developed unhulledgrain is larger than that on waste unhulled-grain. Examination of the distribution of the nematode on rice straw at the beginning of the next season, indicates that the population of the nematode is extemely dense on the residual grain. On straw after perfect thrashing, there were found no significant differences in numbers of living nematode due to height difference. The nematode could hardly survive the winter when unhulledgrain is scattered in the field.
九州大学の論文
1950-01-31