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首页> 外文期刊>日本作物學會紀事 >Studies on Chemicals Effective for Breaking Seed-dormancy and for Killing Dormant Seed of Barnyardgrass (Echinochloa Crus-galli Beauv. var. oryzicola Ohwi) : 2. Factors influencing the activity of effective chemicals in the soaking treatment
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Studies on Chemicals Effective for Breaking Seed-dormancy and for Killing Dormant Seed of Barnyardgrass (Echinochloa Crus-galli Beauv. var. oryzicola Ohwi) : 2. Factors influencing the activity of effective chemicals in the soaking treatment

机译：用于破坏种子休眠和杀死稗子的化学品的化学品（Echinochloa Crus-Galli Beauv。oryzicola Ohwi）：2。影响浸泡治疗中有效化学活性的因素

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Six chemicals, which were found effective in the previous report, were examined in various conditions of the soaking treatment in order to make clear the factors influencing their activity. The results were as follows; 1. Soaking of the domant seeds in 500 ppm emulsion of NIP for 5 days or in 1, 000 ppm for 3 days at 30°C respectively broke the dormancy sufficiently. More breaking was observed at the higher concentration of the chemical or higher temperature, with the longer soaking period, or in cases in which degree of dormancy of tested-seeds was weaker. When the activity of the chemical was too high, most of the seeds lost viability. 2. Emulsion of 1-thiocyanato-2, 3-dibromopropane (U-1), 1, 3-dithiocyanato-2-bromopropane (U-2), 1-isothiocyanato-2-bromopropene (U-3) and 1-thiocyanato-2-bromopopene (U-4) showed remarkable activity in breaking dormancy. The seeds lost viability when the activity of these chemicals was too high. The order of activity of these chemicals was as follows; U-1≤U-2《U-4≒U-3. In order to break the dormancy almost completely, barnyardrass seeds had to be soaked for 2 to 4 days in 500 ppm solution of U-1 or U-2, and for 2 days in 100 ppm or for 4 days in 50 ppm of U-3 or U-4 at 30°C, respectively. 3. The dormant seeds were killed by a soaking treatment in 1, 000 ppm solution of DNBP (amine salt) for 3 days at 30°C. The activity was markedly decreased at the temperature below 20°C. 4. The solvents themselves used for the formulation of these chemicals showed some activity in breaking dormancy, though, in general, it was a limited one. The activity of chemicals, however, varied according to the formulating method of chemicals such as kind of solvent used. The formulating method, therefore, was assumed to have such effects on the activity of the chemicals possibly through affecting their permeability into barnyardgrass seeds. 5. In the screening of effective chemicals for breaking the seed-dormancy or killing the seed by means of the soaking treatment, degree of dormancy of tested seeds and formulating method of the chemicals as well as temperature and duration of the treatment were considered to be important factors. Even in testing chemicals which aim to break the seed-dormancy, it was may be pointed out that not only the number of awakened seeds but also that of killed seeds should be counted.
机译：在浸泡治疗的各种条件下检查了六种在上一份报告中有效的化学物质，以便清楚影响其活动的因素。结果如下; 1.在30℃下浸泡500ppm乳液中的液体乳液中的500ppm乳液，或在1,000ppm，在30°C下分别突破休眠。在化学或较高温度的较高浓度下观察到更多突发，浸泡时间越长，或在测试种子的休眠程度较弱的情况下。当化学物质的活性太高时，大部分种子都失去了活力。 2. 1-硫氰酸盐-2,3-二溴丙烷（U-1），1,3-二硫氰酸盐-2-溴丙烷（U-2），1-异硫氰酸盐-2-溴丙烯（U-3）和1-硫代氰酸盐的乳液-2-溴丙烯（U-4）在破裂休眠方面表现出显着的活性。当这些化学品的活性太高时，种子损失了活力。这些化学品的活动顺序如下; U-1≤u-2“U-4≒U-3。为了完全打破休眠，必须在500ppm的U-1或U-2的500ppm溶液中浸泡2至4天，并在100ppm或50ppm的50ppm中持续2天或4天3或U-4分别在30°C。 3.在30℃下，在1,000ppm（胺盐）的溶液中浸泡处理休眠种子杀死3天。在低于20℃的温度下，活性显着降低。 4.用于制剂这些化学品的溶剂本身在破裂休眠方面表现出一些活性，但通常，它是一个有限的休眠。然而，化学物质的活性根据化学品的配制方法而变化，例如使用的种类的溶剂。因此，假设配方方法对化学品的活性可能通过影响其渗透性成烧结籽种子而产生这种影响。 5.在筛选用于通过浸泡处理破坏种子休眠或杀死种子的有效化学品，考虑了测试种子的休眠程度以及化学品的配制方法以及治疗的温度和持续时间重要因素。即使在测试旨在破坏种子休眠的化学物质中，也可能指出，不仅应该计算唤醒种子的数量，也应该计算出杀死的种子。

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