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作物学报 ›› 2008, Vol. 34 ›› Issue (11): 2026-2032.doi: 10.3724/SP.J.1006.2008.02026

• 耕作栽培·生理生化 • 上一篇    下一篇

基于土壤水分梯度鉴定法的栽培稻抗旱标识品种筛选

张安宁1,2;王飞名1,2;余新桥1;梅捍卫1;罗利军1,2,*   

  1. 1上海市农业生物基因中心，上海201106；2华中农业大学植物科学技术学院，湖北武汉430070
  • 收稿日期:2008-01-18 修回日期:1900-01-01 出版日期:2008-11-13 网络出版日期:2008-08-12
  • 通讯作者: 罗利军
  • 基金资助:

    上海市科学技术委员会技术标准项目(05DZ05003)

Screening Marker Varieties with Drought Resistance in Cultivated Rice (Oryza sativa L.) Using Identification Method with Soil Moisture Gradient

ZHANG An-Ning12,WANG Fei-Ming12,YU Xin-Qiao1,MEI Han-Wei1,LUO Li-Jun12*   

  1. 1 Shanghai Agro-biological Gene Center, Shanghai 201106; 2 College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, Hubei, China
  • Received:2008-01-18 Revised:1900-01-01 Published:2008-11-13 Published online:2008-08-12
  • Contact: LUO Li-Jun

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1675

被引次数

26

摘要：

利用土壤水分梯度鉴定法，对20份在田间表现不同抗旱性的栽培稻进行了抗旱性研究。结果表明，干旱处理24 d后，正常和干旱处理的土壤含水量分别为42.0%和7.9%，在同一田块实现正常供水和干旱处理，可鉴定栽培稻的抗旱性。以抗旱指数为指标，把20份栽培稻划分为高抗、抗、中抗、中感、感5个抗旱级别。根据抗旱指数和综合农艺性状，筛选出了IR55459-05(高抗)、MARAVILHA(抗)、MONOLAYA(中抗)、IR30358-084-1-1(中感)和IR7790-18-1-2(感)5个抗旱级别的标识品种。这一套栽培稻抗旱鉴定流程和标识品种，为水稻节水抗旱研究提供了参考。

关键词: 栽培稻, 抗旱鉴定, 水分梯度, 标识品种

Abstract:

Twenty rice varieties with different drought resistance (DR) in the field were selected to be revaluated on the DR degree using the identification method with soil moisture gradient. After 24 days drought stress treatment, the soil water contents in normal irrigation and drought stress treatments were 42.0% and 7.9%, respectively. The results showed that both normal irrigation and drought stress treatments in the same field were achieved at the same time. These varieties were classified into five groups based on drought index. According to drought index and major agronomic performance, five “marker variety” were selected: IR55459-05 (high resistance), MARAVILHA (resistance), MONOLAYA (medium resistance), IR30358-084-1-1 (medium susceptible) and IR7790-18-1-2 (susceptible). The marker varieties and the standard DR screening process can be used as a reference rice drought resistance studies and breeding in the future.

Key words: Cultivated rice, Drought resistance identification, Moisture gradient, Marker varieties

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