【Objective】Evaluation hardiness of eight kinds of imported grape rootstock.【Method】One year old‘5BB',‘Shangheyihao',‘SO4',‘Kangzhensanhao',‘Beida',‘Shuanghong',‘Beibinghong',‘BK-1'grape rootstock branches were used as test materials,after treated at-40~4℃cold stress for 12 h,the water loss rate,the electrolyte leakage rate,germination rate were determined in treated branches,and the semi-lethal temperature of every kind of rootstock branches was calculated by Logistics.【Result】The electrolyte leakage rate o...
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