吲哚乙酸（IAA）及硫酸對於十字花科蔬菜種子發芽影響試驗

Studies on the Effect of 3-indoleaectic acid and Sulfuric acid on the Germination of Vegetable Seeds of Cruciferae

應用藥劑處理於種子之目的，不外為增加種子內賀爾蒙之含量，以增進其胚之活動能力；或為使種皮柔軟，容易吸收水分；或為促進其潛藏酵素之活動，俾貯藏中之養料，得以溶化以供發芽之需。各種種子因其本身之構造及其貯藏年限等之有異，對於上述數種反應，略有不同，以故藥劑之功效，因之而有參差。

Studies were made in the plant physiological laboratory and vegetable garden of the Institute of Agriculture in Pintung Taiwan from September lst to November 23'h in 1962, to find out the favorable concentrations of 3-indoleacetic acid and sulfuric acid for the germ, ination treatments of IO kinds of vegetable seeds of cruciferae. The concentrations which used for 3-indoleacetic acid were O.00Olppm, O.OOlppm, 0.01ppm, O.lppm, lppm, lOppm. lOOppm, and l,OOOppm; for sulfuric acid were 0.0001N. 0.0005N,O.OOlN, O.C05N, O.OlN and 0.05N. Seeds were soaking for 3, 6, 9 and 12 hours separately. The germinators were glass germinating dishes and filled with moist cotton. 100 Seeds were used for one treatment in one dish. Ten kinds of vegetable seeds of cruciferae for test were as follow: (1) Cabbage: Var. Sun-chi mid-season (2) Kale: Var, Taiwan He-su native (3) Kohl-rabi: Var. King-yet-wu (4) Pe-tsai: Var. Shan-tung late (5) Pak-choi: Var. Fun.cheng (6) Cauliflower: Var. Mid-late nutive (7) Rape: Var. Eighty days (8) Mustard: Var. Been-yan-lo·cha (9) Radish: Var. T ung-gua-101 (10)Rutabaga: Va.r. Purple-top yellow Above seeds were being stored in air-tight cans in common room for one and a half year before used for this test. The results obtained were as follow: 1. 3-indoleacetic acid treat ments showed significant increase !n percentage of germination of kohl-rabi, Pe-tsai, Pak-choi and rutabaga. The effective concentrations varied from O.000lppm to lOppm, as shown in above figure 1-4. All treatments of indoleacetic acid showed neither harmful nor stimulatory effects on cabbage, kale, cauliflower, rape, mustard and radish. 2. Sulfuric acid 0.0001N to 0.001N lmv concentrations caused good effect on percentage of germination of Pe-tsi, Pak-choi and radish as showed, in above figure 5-7. They also increased the initial rate of germination of Pe-tsai, High Coacentrations, O.OlN and 0.05N caused inhibition of germination. All concentrations applied showed no good effect on cauliflower, rape and, mustard. High concentrat ions also caused harmful effect on germination for all of them. 3. Above mentioned effective concentrations applied to the seeds of kohl-rabi, Pe-tsai, Pak-choi, rutabaga and radish showed no harmful effect of growing after the of sowing those sowing treated seeds in the garden during a period of eighty days (except Pak-choi harvested during fifty days of growing).