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中国农学通报 ›› 2017, Vol. 33 ›› Issue (24): 137-143.doi: 10.11924/j.issn.1000-6850.casb16070103

所属专题: 水稻

• 植物保护 农药 • 上一篇    下一篇

化感水稻不育系化57S田间抑制稗草能力表现评价

李少泽,彭海峰,邱振国,陈万胡,方彪,陈中哲,陈雄辉   

  1. 华南农业大学农学院水稻杂种优势利用实验室902,华南农业大学生命科学学院,仲恺农业工程学院健康农业研究所,华南农业大学农学院,华南农业大学农学院,华南农业大学农学院,华南农业大学农学院杂种优势利用实验室902
  • 收稿日期:2016-07-19 修回日期:2017-08-15 接受日期:2016-10-25 出版日期:2017-09-05 发布日期:2017-09-05
  • 通讯作者: 陈雄辉
  • 基金资助:
    广东省科技计划项目“主要粮食作物(水稻)抗性育种技术研究”(2011A020102008);农业部公益性行业(农业)科研专项“利用生态功能分子防控害虫和杂草”(201403030);广东省“扬帆计划”2016年重点人才工程项目(罗定市稻米高尖人才孵化工程);广东省科技计划项目“罗定市丰智昌顺农业科技有限公司科技特派员工作站建设”(2017A090905030)

Evaluation of Inhibitory Effect of an Allelopathic Rice Male Sterile Line‘N57S’ on Barnyard Grass in Filed

  • Received:2016-07-19 Revised:2017-08-15 Accepted:2016-10-25 Online:2017-09-05 Published:2017-09-05

摘要: 评价化感水稻不育系‘化57S’田间抑制稗草能力及稳定性表现及探究其在育种上的研究利用前景。以‘PI312777’和‘化感稻3 号’为对照,分3 期播种,对5 个抑草性状及其稳定性表现进行分析。‘化57S’在3 个播期中均表现出良好的抑制稗草能力,其灌浆期抑草率3 个播期平均值介于对照‘PI312777’和‘化感稻3 号’之间,且差异不显著,其余4 个抑草性状在3 个播期也均与对照差异不显著;‘化57S’灌浆期抑草率、稗草平均株高和稗草单株干物重3 个抑草性状的稳定性均优于2 个对照,其中灌浆期抑草率稳定性最好,变异系数仅为4.51%,可作为初步评价‘化57S’化感潜力的一个指标;相关性分析表明,化感作用和竞争作用共同决定化感稻田间整体抑草效果,化感作用主要是抑制稗草萌发,竞争作用既抑制影响稗草存活率又抑制存活稗草的生物量积累、但两者之间相关不明显。化感水稻不育系‘化57S’是一个田间抑制稗草能力较好且部分抑草性状稳定性好的化感稻材料,初步显示出具有良好的研究利用前景。

关键词: 胚轴, 胚轴, 诱导, 丛生芽, 花生

Abstract: The objective is to evaluate the inhibitory effect and the stability of an allelopathic rice male sterile line‘N57S’on barnyard grass (Echinochloa crus-galli L. Beauv) in filed, and explore the prospect of‘N57S’ in rice breeding.‘PI312777’and‘allelopathic rice 3’were used as control. Three sowing dates were set up. Five kinds of weed suppression traits and their stability were analyzed. The results showed that,‘N57S’ performed strong weed suppression ability against barnyard grass in three sowing dates. The average inhibition rate of‘N57S’at filling stage in three sowing dates was between‘PI312777’and‘allelopathic rice 3’, showing no significant difference. The other four weed suppression traits also showed no significant difference compared with the control in three sowing dates. The stability of the inhibition rate of filling stage of‘N57S’ and the average plant height and the dry weight per plant of associated barnyard grass were better than those of the two controls. The stability of the inhibition rate of filling stage of‘N57S’was the best among the five weed suppression traits, and its coefficient of variability was just 4.51%. And then the inhibition rate of filling stage of‘N57S’can be regarded as a standard to evaluate the allelopathy of‘N57S’preliminarily. The correlation analysis showed that the total inhibitory effect of allelopathic rice on barnyard grass was decided by the allelopathy effect and competition effect jointly. And the germination of barnyard grass was mainly suppressed by the allelopathy effect, while the survival rate and the biomass accumulation of the survival barnyard grass was mainly inhibited by the competition effect, but the correlation between them was not statistically significant.‘N57S’was an excellent allelopathic rice material which performed strong inhibitory ability on barnyard grass and had some stable weed suppression traits in field, owning brilliant prospect in application and study.

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