柑橘線蟲對於酸桔生長影響之研究

Influence of the Citrus Nematodes, Tylenchulus Semipenetrans, on Growth of Sunki, Citrus Reticulata Var. Sunki

童慕秋(Mo-Chu Toung)

《中華農業研究》 15卷3期 (1966/09) Pp. 48-51

https://doi.org/10.29951/JARC.196609.0005

摘要

本試驗於1964年5月在士林園藝試驗分所陽明山工作站開始舉行接種，至1965年3月止，歷時10個月。其結果顯示已接種柑桔線蟲之酸桔，較未接種者，株高平均減少24%，全株重量平均減少51%，根重平均減少62.8%，葉長平均減少17.6%，葉寬平均減少17.1%，葉數平均減少12.8%。經統計分析後，其差異均甚顯著。且被接種者之若干葉片，往往有黃化病微。由此觀之，柑桔線蟲對於酸桔根莖葉生長之削弱，至爲顯著。尤以阻碍根部之發育爲尤甚。

並列摘要

The economical importance of the citrus nematode, Tylenchulus semipenetrans Cobb, has been reported by Thomas, Baines, and Van Gundy. For understanding the influence of this nematode on growth of Sunki, Citrus reticulata var. Sunki (Havata) Toung, a common rootstock in Taiwan, this experiment has been conducted for 10 months, from May of 1964 to March of 1965, at the Yangmingshan Field Station, Shihlin Horticultural Experiment Station.
20 small uniform Sunki seedlings, which had been grown in the steam-sterilized sandy learn soil, were selected for this experiment. 10 individual pots containing one seedling each were inoculated with the citrus nematode larvae which had been propagated from a single eggmass. Approximate 100,000 larvae were syringed into the soil around each seedling. The other 10 seedlings grown individually in each pot were used for check. This experiment was carried out in the well-contro1led greenhouse, and all of the seedlings were grown under conditions of uniform and sufficient nutrition and soil moisture. 10 months later, all seedlings were carefully removed from soil to measure.
Results indicated the citrue nematode can significantly decrease the growth of Sunki seedlings. Averagely, the reductions in height, total fresh weight, fresh weight of roots, length and width of leaves, and numbers of leaves were 24%, 51%, 62.8, 17.6%, 17.1%, and 12.8% respectively.