苜蓿辐射变异初探

Disscussion on Radiation Change of Medicago Satoval

用r射线对草原一号苜蓿进行诱变 ,其剂量为 2万伦、4万伦、6万伦、8万伦 ,设对照对M1代进行测定 ,结果表明 :植株自然高度 ,以剂量为 2万伦的最高 ,为 110 3cm ,单株分枝数以剂量为 6万伦的最高 ,是 11 6个 ,单株叶面积以剂量为 6万伦的最高 ,是 10 4 41cm2 ,产量是以剂量为 6万伦的最高 ,是 4 7kg/m2 ,植物含水量以剂量为 4万伦的最高 ,占鲜重的 6 0 % ,占干重的 15% ,需水程度以剂量为 2万伦的最高 ,是 1 11% ,自由水含量以 6万伦处理的最高 ,是 54% ,说明其具有生长速度快、产量高的生理基础。束缚水含量以剂量为 2万伦处理的最高 ,其次为 4万伦。若以产量为育种目标应选择 6万伦处理的材料 ,以抗性为育种目标应选择

Chaoyuan l of medicago satoual was treated with r-ray that the dose is 20KR,40KR,80KR and was measured with comparable group.The result shows natural height of plant is 110 3cm from 2KR,branch number of per plant is 11 6 from 6KR,wiclth of perplant is 104 4cm 2 from 6KR,yield is 4 7kg/m 2 6KR,content water of plant is 60% of fresh weight,15% of dry weight from 4KR,reqairent water is 111 1% from 2KR.free water is 54% from 6KR,bound water is 2KR next is 4KR.if take the yield as a parpose,select 2KR.