With Welsh Onion seeds employed as materials, effects of magnetized water on seed Germination were studied. The results showed the treatment of magnetized water soaking for 4 h promoted water absorption rate and amyla...With Welsh Onion seeds employed as materials, effects of magnetized water on seed Germination were studied. The results showed the treatment of magnetized water soaking for 4 h promoted water absorption rate and amylase ac- tivities of seeds significantly, which accelerated the transformation process of en- dosperm starch to soluble sugar, resulting in emergence of 36 hours in advance under low temperature condition. Germination rate and germination potential of magnetized water soaking were higher than the contrast by 6.7% and 10.0%, which helped cultivate vigorous seedling.展开更多
Qiyechangbai and Hadacongl were used to study the relationship of the leaf age of overwinter to bolting and, returning green by the difference of sowing time. The results showed that the earlier the seeds were sown, t...Qiyechangbai and Hadacongl were used to study the relationship of the leaf age of overwinter to bolting and, returning green by the difference of sowing time. The results showed that the earlier the seeds were sown, the older leaf age of overwinter was, the higher the rates of returning green and bolting rate were, the earlier the bolting time was. The leaf age of overwinter of Qiyechangbai sown August 31 to September 14 was 2.1-3.1 leaves and the rate of returning green was 86.5%-92.1%, while the leaf age of overwinter of Hadacongl sown September 7 to September 14 was 2.3-2.7 leaves and the rate of returning green was 88.5%-93.8%, both varieties didn＇t bolt. In addition, in the same sowing time, the bolting rate of Hadacong I was higher than that of Qiyechangbai slightly.展开更多
Two new steroidal sapogenins（1,2） along with five known steroidal sapogenins were isolated from the acid hydrolysis product of the whole glycoside mixture of Welsh onion（Allium fistulosum L.） seeds.Based on compre...Two new steroidal sapogenins（1,2） along with five known steroidal sapogenins were isolated from the acid hydrolysis product of the whole glycoside mixture of Welsh onion（Allium fistulosum L.） seeds.Based on comprehensive spectroscopic analyses, including 2D NMR spectroscopy and mass spectrometry,their structures were elucidated as（25R）-19-norspirosta-l,3,5（10）-triene-4 -methyl-2-ol（1）,（25R）-spirost-l,4-diene-3-one-2,6-diol（2）,（25R）-spirost-l,4-diene-3-one-2-ol（3）,（25R）-spirost-4-ene-3-one-2-ol （4）,yuccagenin（5）,gitogenin（6） and tigogenin（7）.展开更多
[目的]筛选适用于大葱枯萎病防治的复配药剂。[方法]室内采用菌丝生长速率法测定霜霉威盐酸盐和霉灵及其不同复配组合对大葱枯萎病菌的生物活性,田间采用沟施法测定复配药剂的田间防效。[结果]室内生物活性测定结果表明:霜霉威盐酸盐和...[目的]筛选适用于大葱枯萎病防治的复配药剂。[方法]室内采用菌丝生长速率法测定霜霉威盐酸盐和霉灵及其不同复配组合对大葱枯萎病菌的生物活性,田间采用沟施法测定复配药剂的田间防效。[结果]室内生物活性测定结果表明:霜霉威盐酸盐和霉灵配比为3∶1时,对大葱枯萎病菌的增效作用最显著。根据最佳质量比配制的药剂2%霜霉·霉灵颗粒剂施药量为1200、1500 g a.i./hm^(2),对大葱枯萎病均有较好的防治效果,2022年防效为70.65%和72.87%,2023年防效为72.05%和73.49%。[结论]2%霜霉·霉灵颗粒剂可用于田间防治大葱枯萎病。展开更多
基金Supported by China Spark Program for Science and Technology(2011GA740072)Shandong Provincial Soft Scientific Research Project(2015RKC35001)Shandong Provincial Agricultural High-quality Seed Engineering(2016LZGC019)~~
文摘With Welsh Onion seeds employed as materials, effects of magnetized water on seed Germination were studied. The results showed the treatment of magnetized water soaking for 4 h promoted water absorption rate and amylase ac- tivities of seeds significantly, which accelerated the transformation process of en- dosperm starch to soluble sugar, resulting in emergence of 36 hours in advance under low temperature condition. Germination rate and germination potential of magnetized water soaking were higher than the contrast by 6.7% and 10.0%, which helped cultivate vigorous seedling.
基金Supported by Science and Technology Innovation Fund of Undergraduation of Northeast Agricultural University(20060201)
文摘Qiyechangbai and Hadacongl were used to study the relationship of the leaf age of overwinter to bolting and, returning green by the difference of sowing time. The results showed that the earlier the seeds were sown, the older leaf age of overwinter was, the higher the rates of returning green and bolting rate were, the earlier the bolting time was. The leaf age of overwinter of Qiyechangbai sown August 31 to September 14 was 2.1-3.1 leaves and the rate of returning green was 86.5%-92.1%, while the leaf age of overwinter of Hadacongl sown September 7 to September 14 was 2.3-2.7 leaves and the rate of returning green was 88.5%-93.8%, both varieties didn＇t bolt. In addition, in the same sowing time, the bolting rate of Hadacong I was higher than that of Qiyechangbai slightly.
基金supported by the National Natural Science Foundation of China(No30873154)National Specific Project of New Drugs Innovation(No2009ZX09103-328)Scientific Foundation of Shanghai China(No 08DZ1971600)
文摘Two new steroidal sapogenins（1,2） along with five known steroidal sapogenins were isolated from the acid hydrolysis product of the whole glycoside mixture of Welsh onion（Allium fistulosum L.） seeds.Based on comprehensive spectroscopic analyses, including 2D NMR spectroscopy and mass spectrometry,their structures were elucidated as（25R）-19-norspirosta-l,3,5（10）-triene-4 -methyl-2-ol（1）,（25R）-spirost-l,4-diene-3-one-2,6-diol（2）,（25R）-spirost-l,4-diene-3-one-2-ol（3）,（25R）-spirost-4-ene-3-one-2-ol （4）,yuccagenin（5）,gitogenin（6） and tigogenin（7）.
文摘[目的]筛选适用于大葱枯萎病防治的复配药剂。[方法]室内采用菌丝生长速率法测定霜霉威盐酸盐和霉灵及其不同复配组合对大葱枯萎病菌的生物活性,田间采用沟施法测定复配药剂的田间防效。[结果]室内生物活性测定结果表明:霜霉威盐酸盐和霉灵配比为3∶1时,对大葱枯萎病菌的增效作用最显著。根据最佳质量比配制的药剂2%霜霉·霉灵颗粒剂施药量为1200、1500 g a.i./hm^(2),对大葱枯萎病均有较好的防治效果,2022年防效为70.65%和72.87%,2023年防效为72.05%和73.49%。[结论]2%霜霉·霉灵颗粒剂可用于田间防治大葱枯萎病。
