摘要
采用Na HCO3胁迫处理白桦四倍体苗木,测定其表型特征及生理特性.结果表明:在Na HCO3胁迫下,白桦四倍体叶片受盐害程度明显低于二倍体,苗高和地径生长明显高于二倍体;白桦四倍体净光合速率、可溶性糖含量、可溶性蛋白含量、脯氨酸含量、超氧化物歧化酶活性和过氧化物酶活性始终显著高于二倍体.
To evaluate the impact of intraspecies genome duplication on NaHCO3 stress, a series of Betula platyphylla autotetraploids and diploids were generated from the same family. The morphology and physiology of these autotetraploid individuals were compared with those diploid trees. Autotetraploids were superior in injury index and relative growth of height and base diameter compared to diploids. Physiological data revealed autotetraploids were generally higher expression in net photosynthetic rate, soluble sugar content, soluble protein content, proline content, superoxide dismutase activity and peroxidase activity.
出处
《北华大学学报（自然科学版）》
CAS
2016年第5期585-589,共5页
Journal of Beihua University（Natural Science）
基金
吉林省教育厅科学技术研究项目(2015139)
北华大学博士科研启动基金
关键词
白桦
四倍体
胁迫响应
Betula platyphylla
autotetraploid
stress response
