吉林省主推玉米杂交种及骨干系大田全生育期的耐旱评价

朴明鑫; 张春宵; 杨书华; 李万军; 刘文国; 李晓辉; 杨德光

朴明鑫,张春宵,杨书华,李万军,刘文国,李晓辉,杨德光.吉林省主推玉米杂交种及骨干系大田全生育期的耐旱评价[J].干旱地区农业研究,2012,30(6):7~16

吉林省主推玉米杂交种及骨干系大田全生育期的耐旱评价

Analysis of drought tolerance in the whole-growth period of maize hybrids and elite inbred lines predominantly planted in field in Jilin Province

DOI：10.7606/j.issn.1000-7601.2012.06.02

中文关键词: 玉米生育期干旱胁迫耐旱性评价鉴定指标

英文关键词:maize growth period drought stresse drought tolerance evaluation identification index

基金项目:农业部转基因重大专项“通过基础抗性与诱导抗性基因的协同操纵进行抗旱转基因玉米新品种培育”(2009ZX08003-009B)； “十二五”农业部转基因重大专项“转基因玉米小麦大豆环境安全评价技术”(2011ZX08011-003)

作者	单位
朴明鑫	东北农业大学农学院,黑龙江哈尔滨 150030 吉林省农业科学院生物技术研究中心,吉林长春 130033
张春宵	吉林省农业科学院生物技术研究中心,吉林长春 130033
杨书华	东北农业大学农学院,黑龙江哈尔滨 150030 吉林省农业科学院生物技术研究中心,吉林长春 130033
李万军	吉林省农业科学院洮南综合试验站,吉林洮南 137100
刘文国	吉林省农业科学院玉米研究所,吉林公主岭 136100
李晓辉	吉林省农业科学院生物技术研究中心,吉林长春 130033
杨德光	东北农业大学农学院,黑龙江哈尔滨 150030

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中文摘要:

基于减产率对31份吉林省主推玉米杂交种进行耐旱性直接评价。同时,通过31份玉米杂交种的大田苗期、开花期和灌浆期候选形态指标与减产率的相关性分析,筛选出适宜的耐旱鉴定指标。根据确立的形态指标,对68份骨干玉米自交系进行耐旱性间接评价。结果表明:(1)在31份玉米杂交种中,筛选出耐旱性极强杂交种6份、耐旱性强杂交种12份、耐旱性中度杂交种5份、耐旱性弱杂交种7份和耐旱性极弱杂交种1份;(2)株高和茎粗可作为大田条件下苗期、开花期和灌浆期的耐旱鉴定形态指标;(3)在68份玉米自交系中,筛选出耐旱性极强自交系6份、耐旱性强系21份、耐旱性中度系28份、耐旱性弱系7份和耐旱性极弱系6份。研究结果将为吉林地区耐旱玉米种质资源筛选提供依据。

英文摘要:

The drought tolerance of 31 maize hybrids predominantly planted in Jilin Province was directly analyzed by reduction percentage. At the same time, the appropriate indices for the identification of drought tolerance were screened by the correlation between candidate morphological indices at seedling, florescence and filling stages and reduc-tion percentage of these hybrids. Based on the above indices, drought tolerance among 68 elite inbred lines was indirectly evaluated. The main results were summarized as follows:(1)Among 31 maize hybrids, we screened 6 hybrids with high drought tolerance, 12 hybrids with drought tolerance, 5 hybrids with medium drought tolerance, 7 hybrids with drought susceptible, and l hybrid with high drought susceptible; (2)The plant height and stem diameter were the appropriate morphological indices for whole growth period in field; (3)Among 68 maize inbred lines, we screened 6 lines with high drought tolerance, 21 lines with drought tolerance, 28 lines with medium drought tolerance, 7 lines with drought suscep-tible, 6 lines with high drought susceptible. The results would provide reference for screening germplasms with drought tolerance in Jilin region.

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