CAJ | 학술논문

铝毒是酸性土壤中农业生产的限制因子,抑制植物根的生长,减低植物的耐旱性,引起营养缺乏和植物其他生理生化方面的改变.大豆是一种富营养植物,特别是蛋白含量很高,并且常被用于改良土壤.笔者对7个大豆基因型(品种),在含有2mmol/L铝和不含有铝的溶液中培养2周,进行随机化完全区组设计实验,以研究不同基因型的大豆幼苗对铝胁迫的生长反应.结果显示,在铝胁迫下培养的幼苗,其上胚轴长度、株高、根长、鲜重、干重以及叶绿素含量等都有所下降,但不同基因型品种的幼苗对于铝胁迫呈现一定的差异反应.7个品种按照相应幼苗根生长的数据分为3组:在铝胁迫下,南农73-935 和大黄豆是供试品种中耐受性最好的基因型 (根生长仅减少15%) ;南农87C-38和Williams是最敏感的(减少37%～39%);1138-2,洪引1号和科丰1号(减少23%～27%)的反应则介于以上两者之间.
려독시산성토양중농업생산적한제인자,억제식물근적생장,감저식물적내한성,인기영양결핍화식물기타생리생화방면적개변.대두시일충부영양식물,특별시단백함량흔고,병차상피용우개량토양.필자대7개대두기인형(품충),재함유2mmol/L려화불함유려적용액중배양2주,진행수궤화완전구조설계실험,이연구불동기인형적대두유묘대려협박적생장반응.결과현시,재려협박하배양적유묘,기상배축장도、주고、근장、선중、간중이급협록소함량등도유소하강,단불동기인형품충적유묘대우려협박정현일정적차이반응.7개품충안조상응유묘근생장적수거분위3조:재려협박하,남농73-935 화대황두시공시품충중내수성최호적기인형 (근생장부감소15%) ;남농87C-38화Williams시최민감적(감소37%～39%);1138-2,홍인1호화과봉1호(감소23%～27%)적반응칙개우이상량자지간.
Aluminum(Al) toxicity is a limiting factor for agriculture in acidic soils where it results in an inhibition of root growth,drought intolerance,nutrient deficiencies and other physiological and biochemical changes in plants.Soybean is highly nutritious being particularly rich in protein content and useful for soil improvement.In present study,the seedlings of 7 soybean cultivars were grown in solution with or without 2mmol/L Al stress in a randomized complete block design experiment for 2 weeks,to evaluate the differential responses of soybean genotypes to Al stress on seedling growth.Results showed that epicotyl length,seedling height,root length,fresh and dry weights,and chlorophyll content were decreased for the cultivars tested under Al stress.There was no uniform response of the cultivars to Al stress in seedling growth.However,seven cultivars seem to be categorized as 3 groups,based on the relative root growth data as follows.Nannong 73-935 and Dahuangdou were the most tolerant(15% reduction) and Nannong 87C-38 and Williams were the most sensitive(37%～39% reduction);1138-2,Hongyin No.1 and Kefeng No.1(23%～27% reduction) showed intermediate response under Al stress.