| 黄 玲，高 阳，李新强，邱新强，申孝军，巩文军，段爱旺.不同年代主栽冬小麦品种蜡质含量与生理指标的关系[J].干旱地区农业研究,2013,31(5):213~219 |
| 不同年代主栽冬小麦品种蜡质含量与生理指标的关系 |
| Relationship between wax content and physiological characters of winter wheat during different ages |
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| DOI：10.7606/j.issn.1000-7601.2013.05.036 |
| 中文关键词: 冬小麦 蜡质含量 品种更替 生理指标 籽粒产量 水
分利用效率 |
| 英文关键词:winter wheat wax content cultivars replacement phys |
| 基金项目:现代农业产业技术体系建设专项资金资助（CARS-3-1-30）；公益性行业（农业）科研专项（201203077）;国家高技术研究发展计划项目（2011AA100509，2011AA100502） |
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| 中文摘要: |
| 为明确不同水分处理下不同年代主栽冬小麦品种在生育后期蜡质含量与主要生理指标的关系，选择建国以来河南中北部麦区不同年代主栽的6个冬小麦品种为试验材料，设置三个水分处理：W0，返青后不灌水；W1，拔节期灌水；W2，拔节和灌浆期分别灌水，研究了不同灌水下灌浆期冬小麦旗叶蜡质含量、气体交换参数以及籽粒产量和水分利用效率等指标变化。结果表明：旗叶表面蜡质含量与光合速率、蒸腾速率、叶水势和籽粒产量极显著负相关，与叶片温度呈极显著正相关，与叶片WUE和产量水平WUE相关不显著。在品种更替过程中，冬小麦旗叶蜡质含量先增加后降低，20世纪70—80年代品种蜡质含量最高，比其它年代品种高14.4%～86.9%，而籽粒产量比90年代后品种降低6.6%～23.0%，叶片WUE比其它年代品种降低11.8%～17.9%，产量水平WUE比90年代后品种降低6.8%～22.0%。水分胁迫增加了旗叶表面蜡质含量，使得旗叶光合速率降低，CO2同化作用减弱，同化产物输出减少，最终引起籽粒产量降低。 |
| 英文摘要: |
| In order to clarify the relationship between wax accumulation and physiological characters of winter wheat cultivars bred at different eras under different water treatments, six representative winter wheat cultivars were selected from the central Henan in different period to study wax content and gas exchanging parameter etc. Three irrigation levels were consisted with the following water treatmen
ts: no irrigation after returning green stage (W0), one irrigation at jointing stage (W1), two irrigations at jointing and milky stage respectively (W2). The results showed there were significant negative correlations among wax content of leaf and photosynthesis rate, transpiration rates, leaf water potential and grain yield. There were significant positive correlation between wax content and leaf temperature. There was no significant correlation with WUE of leaf and WUE of grain yield. The wax content of flag leaf of winter wheat increased first and decreased later with years. The wax content of winter cultivars bred in 1970s and 1980s improved by 14.9%～86.9% than other age ultivars. The decrease in grain yield of winter wheat bred in 1970s and 1980s was from 6.8% to 22.0% than bred after 1990s. The decrease in leaf WUE of winter wheat bred in 1970s and 1980s was from 11.8% to 17.9% than other cultivars. The decrease in WUE of yield of winter wheat bred in1970s and 1980s was from 11.8% to 17.9% than bred after 1990s. Accumulation wax on leaf blade under water stress was lower. The photosynthetic rate and the CO2 assimilation products declined at water stress so that the grain yield declined. |
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