摘要： 大葱种子的贮存效应随着贮存温度和种子含水量的不同而变化。超干含水量的大葱种子（MC2.8%）在20℃温度下密封贮存11年后，种子发芽率和苗长没有明显降低，脱氢酶活性、SOD活性及细胞膜完整性均得到较好的维持.2.8%和5.3%的大葱种子在0℃温度下密封贮存13年后，也具有一定的种子发芽率和苗长，而7.4%和2.6%的大葱种子活力全部丧失。这意味着利用超干技术保存大葱种质是可行的。
关键词:
大葱种子,
超干贮存,
生理生化特性
Abstract: The phy siolog ical-biochemical characteristics of Welsh onion(Allium fistulosum L.) seed under ultra-low moisture content (MC)were studied.The results showed that Welsh onion seed had different storage effects according to its storage temperature and its moisture content. The treatment of MC 2.8% w as not injurious to Welsh noio n seed after 11-year′s storage at 20℃.It did not induce any sig nificant change either in seed viabili ty or in seed vigor.The activities of dehydrogenase and SOD in seed still remained well.Electric conductivity value indicated that the membrane system of this treatment had good integ rity.The treatments of MC 2.8% and MC 5.3% kept seeds comparatively viable and vigorous af ter 13 years at 0℃,w hile those of MC 7.4% and MC 2.6% made seed′s vigor lost completely.This means germplasm of Welsh o nion can be preserved well by proper ult ra-dry storage.
Key words:
Welsh onion(Allium fistulosum L.)seed,
Ultra-low moisture content,
Physiologicalbiochemical characteristics
中图分类号:
张海英, 孟淑春, 孔祥辉. 多年超干贮存对大葱种子生理生化特性的影响[J]. 华北农学报, 2001, 16(4): 47-51. doi: 10.3321/j.issn:1000-7091.2001.04.011.
ZHANG Haiying, MENG Shuchun, KONG Xianghui. Study on the Physiological-biochemical Characteristics of Welsh Onion(Allium fistulosum L.)Seed Under Ultra-low Moisture Content[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2001, 16(4): 47-51. doi: 10.3321/j.issn:1000-7091.2001.04.011.