CAJ | 학술논문

对2004-2008年参加长江中下游稻区和湖南省水稻区试的2 178份水稻材料的稻瘟病抗性进行了鉴定.结果表明,以综合指数作为评价指标,2 178份水稻区试材料的抗性水平差异明显,其中无抗和高抗品种;中抗品种有199份,频率为9.26%;中感品种551份,频率为25.64%;感病品种933份,频率为43.42%;高感品种466份,频率为21.68%.2004-2008年长江中下游水稻区试品种对稻瘟病的整体抗性水平呈下降趋势.以综合指数来评价水稻稻瘟病的抗性较为科学、合理,符合生产实践要求.
대2004-2008년삼가장강중하유도구화호남성수도구시적2 178빈수도재료적도온병항성진행료감정.결과표명,이종합지수작위평개지표,2 178빈수도구시재료적항성수평차이명현,기중무항화고항품충;중항품충유199빈,빈솔위9.26%;중감품충551빈,빈솔위25.64%;감병품충933빈,빈솔위43.42%;고감품충466빈,빈솔위21.68%.2004-2008년장강중하유수도구시품충대도온병적정체항성수평정하강추세.이종합지수래평개수도도온병적항성교위과학、합리,부합생산실천요구.
The blast resistance of 2 178 rice varieties from the regional trials of Hunan Province and the middle and lower reaches of Changjiang River Valley was identified and evaluated during 2004 and 2008. The results showed that the resistant levels evaluated by the integrated index varied greatly with the varieties, of which none was highly resistant (HR) or resistant (R) to blast, 199 or 9.26% of the tested varieties were intermediately resistant (MR) to blast, 551 or 25.64% of the tested varieties were intermediately susceptible (MS) to blast, 933 or 43.42% of the tested varieties were susceptible (S) to blast and 466 or 21.68% of tested varieties were highly susceptible (HS) to blast. It was found that there was a decreasing trend in blast resistance for the tested varieties in the regional trials of the middle and lower reaches of Changjiang River Valley from 2004 to 2008. The integrated index was considered to be a more scientific and reasonable index to evaluate blast resistance of varieties in practical rice production.