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经研究苎麻种质湿害反应首先是麻茎下部叶的萎蔫脱落,次为生长点及附近幼小叶的水渍状枯死斑块;地上部致死时间在96小时以上,地下部致死时间在120小时以上,地下部的营养及生理状况对湿害鉴定的影响较大。水胁迫下,离体种蔸的相对出苗期,淹没顶尖离体种苗的成活率、钵栽麻的茎粗湿害指数与干茎重湿害指数的相关系数分别为r=0.777、-0.606与0.684 ̄*,达极显著或显著水平。钵栽麻淹水96小时,其生物产量损失37.16%,干茎重损失44.24%,品种间耐淹性差异明显,从10份材料中筛选出构皮麻1号、蔸麻2份耐淹性强的种质提供应用。离体种蔸是大批量种质资源耐淹性鉴定的适宜材料,茎粗是较好的湿害性状指标。
The study of ramie germplasm wet reaction is first of the lower part of hemp stem wilting off, secondary to the growing point and the young leaves near the water-like dead patches; above the ground dead time of 96 hours or more, the underground lethal time at 120 hours Above, the nutritional and physiological status of the underground wet appraisal of the greater impact. Under water stress, the relative germination rate of in vitro seedling emergence, submerged top seedling seedling survival rate, the correlation coefficient between the stem wetness index and the stem wet weight index were: r = 0.777, -0.606 and 0.684 ~ *, reaching a significant or significant level. The potted seedlings flooded 96 hours, the biological yield loss of 37.16%, dry stem weight loss of 44.24%, significant differences between the flooding resistance varieties, selected from 10 materials, Submergence of the flood of germplasm provide applications. In vitro species 适 is a suitable material for identification of flooding resistance of large-scale germplasm resources, stem diameter is a good indicator of wet injury traits.