多年超干贮存对大葱种子生理生化特性的影响  

Study on the Physiological-biochemical Characteristics of Welsh Onion(Allium fistulosum L.) Seed Under Ultra-low Moisture Content

作　　者：张海英[1] 孟淑春[1] 孔祥辉[1] 

机构地区：[1]国家蔬菜工程技术研究中心,北京100089

出　　处：《华北农学报》2001年第4期47-51,共5页Acta Agriculturae Boreali-Sinica

基　　金：北京市自然科学基金资助项目 (6 972 0 0 4 ) ;北京市科技新星计划资助项目 (95 4 812 80 0 )

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 2 0℃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。The physiological 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% was not injurious to Welsh noion seed after 11 year′s storage at 20 ℃ .It did not induce any significant change either in seed viability 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 integrity.The treatments of MC 2 8% and MC 5 3% kept seeds comparatively viable and vigorous after 13 years at 0 ℃,while those of MC 7 4% and MC 2 6% made seed′s vigor lost completely.This means germplasm of Welsh onion can be preserved well by proper ultra dry storage.

关 键 词：大葱 种子 超干贮存 生化特性 生理特性 

分 类 号：S633.103.2[农业科学—蔬菜学]