孕穗期渍水对冬小麦根系衰老的影响

应用生态学报 ›› 2000, Vol. ›› Issue (5): 723-726.

孕穗期渍水对冬小麦根系衰老的影响

李金才¹, 魏凤珍¹, 余松烈², 于振文²

1. 安徽农业大学农学系, 合肥230036;
2. 山东农业大学农学系, 泰安271018

收稿日期:1999-05-17 修回日期:1999-09-24 出版日期:2000-09-25
通讯作者: 李金才,男,1964年生,农学博士,副教授,主要从事作物生理生态研究,发表论文16篇.E-mail:aaupo@mail.hf.aah.cn
基金资助:
安徽省自然科学基金资助项目(98121805)

Effect of waterlogging on senescence of winter wheat root system at booting stage

LI Jincai¹, WEI Fengzhen¹, YU Songlie², Yu Zhenwen²

1. Department of Agronomy, Anhui Agricultural University, Hefei 230036;
2. Department of Agronomy, Shandong Agricultural University, Taian 271018

Received:1999-05-17 Revised:1999-09-24 Online:2000-09-25

摘要/Abstract

摘要： 选用耐湿性不同的3个冬小麦栽培品种,采用土柱栽培试验方法研究了孕穗期渍水逆境对冬小麦根系生长发育、³²P吸收、分配及根系衰老的影响.结果表明,孕穗期渍水逆境降低了地下根系干重、根系活力和根系SOD酶活性;使根系质膜相对透性和膜脂过氧化水平(MDA含量)提高;同时,孕穗期渍水逆境严重影响根系吸收、运输和分配³²P的能力,从而加速了根系衰老

Abstract: By applying 3 winter wheat cultivars of different water-resistance,the effect of waterlogging at booting stage on the growth and development of root system, ³²P absorption and its distribution,and senescence of root system was studied with soil column culture.Waterlogging at booting stage reduced root dry weight,its activity and SOD activity,and increased the relative permeability of plasma membrane and the membrane-lipid preoxidation level(MDA content)of root system.Meanwhile,waterlogging influenced the ³²P absorption,transportation and distribution,and consequently,speeded up the senescence of root system.

李金才, 魏凤珍, 余松烈, 于振文. 孕穗期渍水对冬小麦根系衰老的影响[J]. 应用生态学报, 2000, (5): 723-726.

LI Jincai, WEI Fengzhen, YU Songlie, Yu Zhenwen. Effect of waterlogging on senescence of winter wheat root system at booting stage[J]. Chinese Journal of Applied Ecology, 2000, (5): 723-726.