【摘要】 本文研究了十二个耐寒性不同的水稻标准品种在秧苗期低温处理后一些生理生化指标的变化情况。证明水稻幼苗游离脯氨酸含量和细胞膜透性增加,过氧化物酶活性下降,酯酶和过氧化物酶同工酶谱带数减少等与耐寒性的密切相关,与大田自然鉴定结果基本一致。笔者认为以上指标可作为耐寒性鉴定的综合指标。更多还原

【Abstract】 Twelve standard varieties differing in cold endurance were impirically investigated into variations of the physiological and biochemical indices at seedling stage after low temperature treatment. The correlation between cold endurance and variable factors including the increase in free proline content and cell membrane permeability, the decline in peroxidase activity and the decrease in band number of esterase and peroxidase isozymes have been discussed in this paper. The result is basically coincident with that of natural identification in field so it could be used as a synthetic index for evaluating the cold endurance of rice.更多还原