CAJ | 학술논문

以3个小麦品种为实验材料,在室温(18 ℃)和低温(4 ℃)胁迫下测定发芽特性和幼苗(萌发15 d)形态指标,以各性状低温与室温下测定值的比值(相对值)作为小麦耐低温评价指标, 评价小麦萌发和幼苗的耐低温特性.结果表明:低温降低小麦发芽速度和阻碍幼苗生长,苗比根对低温敏感,低温的干鲜比大于室温的干鲜重比值;种子萌发和幼苗期的各性状相对值可以作为鉴定小麦耐低温的评价指标.
이3개소맥품충위실험재료,재실온(18 ℃)화저온(4 ℃)협박하측정발아특성화유묘(맹발15 d)형태지표,이각성상저온여실온하측정치적비치(상대치)작위소맥내저온평개지표, 평개소맥맹발화유묘적내저온특성.결과표명:저온강저소맥발아속도화조애유묘생장,묘비근대저온민감,저온적간선비대우실온적간선중비치;충자맹발화유묘기적각성상상대치가이작위감정소맥내저온적평개지표.
Taking 3 wheat varieties as materals,the characteristics of germination and morphological index of seedling were determined.The ratio of the measured value of traits at room temperature(18 ℃)and low temperature(4 ℃)was taken as the evaluation index of low temperature tolerance to evaluate the low temperature tolerance of wheat seedling .The results showed that the low temperature decreased the germination speed and hindered the seedling growth .The seedling had stronger sensitive to the low temperature than that of the root.The ratio of dry weight and fresh weight at low temperatre was more than that at room temperature.The relative value of traits in period of the seed germination and seedling could be taken as the evaluation index of the low temperature tolerance.