玉米自交系生理指标与抗旱性及复水恢复能力的关系研究

doi:10.11924/j.issn.1000-6850.casb20190400073

中国农学通报 ›› 2019, Vol. 35 ›› Issue (29): 32-40.doi: 10.11924/j.issn.1000-6850.casb20190400073

所属专题：生物技术；玉米

玉米自交系生理指标与抗旱性及复水恢复能力的关系研究

黄保, 王延召

河南省农业科学院粮食作物研究所

收稿日期:2019-04-30 修回日期:2019-09-11 接受日期:2019-07-23 出版日期:2019-10-14 发布日期:2019-10-14
通讯作者: 王延召
基金资助:
河南省重大科技专项“粮食作物新品种（郑单1002、郑麦379、郑麦101）产业化开发”(151100111100)。

Physiological Indexes of Maize Inbred Lines: The Relationship with Drought Resistance and Recovery Capacity

Received:2019-04-30 Revised:2019-09-11 Accepted:2019-07-23 Online:2019-10-14 Published:2019-10-14

摘要/Abstract

摘要： 【研究目的】为了评价不同玉米自交系的抗旱性，探究生理指标与抗旱性、恢复能力和综合抗旱能力之间的关系。【方法】本研究以19份自交系为材料，采用盆栽称重控水法对苗期玉米进行中度旱胁迫及复水，测定生物量、叶绿素含量、类胡萝卜素含量、Fv/Fm、脯氨酸含量和抗氧化酶活性对干旱和复水的响应。【结果】分析发现自交系‘郑8713’、‘郑63’和‘昌7-2’的抗旱性、恢复能力和综合抗旱能力均较强，自交系‘郑C112’、‘郑718’和‘郑6722’虽然抗旱性较弱，但是恢复能力和综合抗旱能力较强，自交系‘郑3733’、‘郑E846’和‘郑36’恢复能力较弱，但是抗旱能力和综合抗旱能力很强；同时发现类胡萝卜素与抗旱性之间呈现显著的相关性(P=0.503*)，POD抗氧化酶与复水后的恢复能力之间关系显著(P=0.421*)，Fv/Fm与综合抗旱性之间呈显著的相关性(P=-0.456*)，叶绿素含量与抗旱性(P=0.468*)和复水后的恢复能力(P=0.407*)之间均呈现显著的相关性。【结论】以上结果为培育抗旱型品种提供优良的种质资源，同时为玉米抗旱性、恢复能力及综合抗旱能力的筛选与鉴定提供一定的指导意义。

关键词: 大暴雨, 大暴雨, 环流背景, 动力条件, 水汽条件, 能量条件, 对比分析

Abstract: To evaluate the drought resistance of different maize inbred lines, the relationship between physiological indicators and drought resistance, recovery capacity and comprehensive drought resistance was explored. 19 inbred lines were used as materials under moderate drought and re-watering of seedling by potted weighing and controlling water method. The responses of biomass, chlorophyll content, carotenoid content, Fv/ Fm, proline content and antioxidant enzyme to drought and re-watering were determined. The analysis found that the inbred lines‘Zheng 8713’,‘Zheng 63 ’and‘Chang 7-2’had stronger drought resistance, recovery capacity and comprehensive drought resistance. The drought resistance of inbred lines‘Zheng C112’,‘Zheng 718’and‘Zheng 6722’was weak, but their recovery capacity and comprehensive drought resistance were strong. Inbred lines‘Zheng 3733’,’Zheng E846’and‘Zheng 36’had weak recovery capacity, but drought resistance and comprehensive drought resistance were strong. At the same time, there was a significant correlation between carotenoids and drought resistance (P=0.503*). The relationship between POD antioxidant enzymes and recovery ability was significant (P=0.421*), Fv/Fm and comprehensive drought resistance was significant (P=-0.456*). There were significant differences between chlorophyll content and drought resistance (P=0.468*) and comprehensive drought resistance (P=0.407*). The above results provide excellent germplasm resources for breeding drought-tolerant varieties, and guidance for the screening and identification of drought resistance, recovery capacity and comprehensive drought resistance of maize.

黄保,王延召. 玉米自交系生理指标与抗旱性及复水恢复能力的关系研究[J]. 中国农学通报, 2019, 35(29): 32-40.

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玉米自交系生理指标与抗旱性及复水恢复能力的关系研究

Physiological Indexes of Maize Inbred Lines: The Relationship with Drought Resistance and Recovery Capacity

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