Chinese Journal of Rice Science

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Dynamic Model of Rice Cold Resistance

Li Taigui; Xu Rensheng; Cai Tichang; Shen Bo; Hua Zhihua   

  • Received:1900-01-01 Revised:1900-01-01 Online:1994-07-10 Published:1994-07-10

水稻冷抗的动态模型分析

李太贵; 徐仁胜;蔡体常;沈 波;华志华   

  1. 中国水稻研究所,杭州310006

Abstract: Under the condition of field or growing chamber, different cold-resistance rice cultivars were continuously treated with low water temperature or low air temperature in various developmental period. According to cold resistance = cold stress / cold strain (R=F/S), dynamic characteristics of different morphological indices R in rice were studied under low temperature, and relationship of S-t. R-t and F-S were further analyzed. F was cold stress in vivo produced by the accumulating amount of treating low temperature and induce R increase during the early treatments. S was the variate of plant indices induced by low temperature. The R value appeared parabolic change with response to treated time, and the treated time of maximum R might be used to evaluate the cold resistant ability of rice cultivars. Based on F-S characteristics.It suggested that cold resistance has three types, i.e. static resistance, dynamic resistance and that with both of them.

Key words: Cold resistance, Cold stress, Cold strain, Dynamic model, Dynamic resistance

摘要: 在自然和人工气候室条件下对具有没 抗冷性的水稻品种在不同生育时期进行连续的低水温和低气温处理,采用阴抗=应力/应变(R= F/S),研究了低温下水稻不同形态指标R的动态特征,进一步分析了R-t,S-t和F-s的特性,F是低温积累量在体内产生的应力,处理初期诱发R增加,S为植物体在低温下的变化量。R随处理时间呈抛物线型变化,其值可用来比较不同品种的抗冷能力,据R的F-S特性将冷抗R分为静抗、动抗和静动兼有的3个类型。

关键词: 水稻, 抗冷性