| 干旱胁迫对白菜型冬油菜苗期生理特性的影响 |
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| 引用本文： | 张朋飞,武军艳,孙万仓,史永弟,曹 杰,黄纪红,刘翠平,方 彦.干旱胁迫对白菜型冬油菜苗期生理特性的影响[J].西北农业学报,2015,24(2):84-90. |
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| 作者姓名： | 张朋飞 武军艳 孙万仓 史永弟 曹 杰 黄纪红 刘翠平 方 彦 |
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| 作者单位： | 内蒙古鄂托克旗农业技术推广站;甘肃省干旱生境作物学重点实验室,甘肃省作物遗传改良与种质创新重点实验室,甘肃农业大学农学院 |
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| 基金项目： | 农业部公益性行业(农业)科研专项(200903002-04);国家高技术研究发展计划(863计划)(2011AA10A104);农业部产业技术体系建设资金项目(CARS-13) |
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| 摘 要： | 对8个白菜型冬油菜品种苗期抗旱胁迫下生理指标的变化特性进行研究,了解不同生理指标与白菜型冬油菜品种耐旱性的相关性,筛选耐旱品种或种质。结果表明,干旱胁迫后,油菜游离脯氨酸(Pro)、超氧化物岐化酶(SOD)、过氧化物酶(POD)和过氧化氢酶(CAT)活性都逐渐增加,丙二醛(MDA)质量分数先降低后增加。MDA与苗期干旱胁迫后幼苗成活率呈极显著相关,POD与幼苗成活率呈显著相关,可作为鉴定白菜型冬油菜抗旱性鉴定的首选指标。综合来看,8个品种中天油7号对干旱反应敏感,表现为不抗旱;陇油7号对干旱反应迟钝,为强抗旱品种;天油2号、陇油9号、天油5号为弱耐旱抗品种,陇油6号、陇油8号、天油8号为中抗旱品种。
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| 关 键 词： | 抗旱性 白菜型冬油菜 生理特性 相关性 |
Effect of Drought Stress on Physiological Character of Winter Rape (Brassica campestris L.) at Seedling Stage |
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| ZHANG Pengfei,WU Junyan,SUN Wancang,SHI Yongdi,CAO Jie,HUANG Jihong,LIU Cuiping and FANG Yan.Effect of Drought Stress on Physiological Character of Winter Rape (Brassica campestris L.) at Seedling Stage[J].Acta Agriculturae Boreali-occidentalis Sinica,2015,24(2):84-90. |
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| Authors: | ZHANG Pengfei WU Junyan SUN Wancang SHI Yongdi CAO Jie HUANG Jihong LIU Cuiping and FANG Yan |
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| Institution: | ZHANG Pengfei;WU Junyan;SUN Wancang;SHI Yongdi;CAO Jie;HUANG Jihong;LIU Cuiping;FANG Yan;Etuoke Banner Agricultural Technique Extension Station of Ordos City;Gansu Key Lab of Crop Improvement and Germplasm Enhancement,Gan Provincial Key Laboratory of Aridland Crop Science,College of Agronomy,Gansu Agricultural University; |
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| Abstract: | To learn the drought resistance mechanism and find some new materials for drought resistance breeding of winter rapeseed, the paper studied the physiological character at seedling stage under drought stress. The results showed that Pro, SOD, POD and CAT activity increased after drought stress while MDA content decreased first and then increased. MDA content is highly significant correlation with survival rate and POD activity is significant, so MDA content would be the first choice to evaluate drought resistance of winter rapeseed. Tianyou 7 is sensitive to drought stress and has no drought resistance. Longyou 7 is obtuse to drought stress and labeled as high drought resistant variety. Tianyou 2, Longyou 9 and Tianyou 5 are low drought resistant varieties. Longyou 6, Longyou 8 and Tianyou 8 are medium resistant varieties. |
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| Keywords: | Drought tolerance Winter rapeseed( Brassica campestris L ) Physiological and bio-chemical indexes Correlation |
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