南疆地区4个鲜食枣品种(系)光合特性研究
Study on Photosynthetic Characteristics of Four Fresh Jujube Varieties(Lines)in Southern Xinjiang
呼亚捷 1孙英华 2吴正保 3田嘉2
作者信息
- 1. 新疆农业大学园艺学院,新疆 乌鲁木齐 830052;新疆林科院经济林研究所,新疆 乌鲁木齐 830063
- 2. 新疆农业大学园艺学院,新疆 乌鲁木齐 830052
- 3. 新疆林科院经济林研究所,新疆 乌鲁木齐 830063
- 折叠
摘要
[目的]探明南疆地区不同鲜食枣品种(系)夏季光合性能及差异,为鲜食枣品种(系)选育与推广栽培提供理论依据.[方法]以冬枣、蟠枣、XLCZ和伏脆蜜为试材,测定光合色素、光合日变化趋势及光合速率-光响应曲线特征参数,比较分析 4个鲜食枣品种(系)光合特性.[结果]净光合速率(Pn)日均值分别为冬枣 4.21 µmol/(m2·s)、蟠枣 5.74 µmol/(m2·s)、XLCZ 6.02 µmol/(m2·s)、伏脆蜜 3.41 µmol/(m2·s).XLCZ和蟠枣净光合速率日变化均呈典型的单峰型曲线,无"午休"现象;冬枣和伏脆蜜呈明显的双峰型.4个鲜食枣品种(系)对光合有效辐射的响应曲线基本一致,净光合速率随着光合有效辐射升高而增加,当光照强度达饱和点后,净光合速率增长曲线变化趋于平缓.光补偿点为XLCZ>伏脆蜜>冬枣>蟠枣,光饱和点为XLCZ>伏脆蜜>蟠枣>冬枣.4个鲜食枣品种(系)水分利用率均表现为上午较下午高,且冬枣>伏脆蜜>蟠枣>XLCZ.[结论]冬枣、蟠枣、XLCZ和伏脆蜜 4个鲜食枣品种(系)在阿克苏地区均具有较强的光适应能力,其中,冬枣和蟠枣耐阴性相对较好,能更好地利用弱光;伏脆蜜能更好地利用强光.
Abstract
[Objective]The summer photosynthetic performance and differences of four fresh jujube varieties(lines)in southern Xinjiang were studied,so as to provide theoretical basis for the breeding and wide application of fresh jujube varieties(lines).[Method]Using Dongzao,Panzao,XLCZ and Fucuimi as test materials,the photosynthetic pigment,diurnal variation trend of photosynthesis,and characteristic parameters of photosynthetic rate and light response curve were measured,and the photosynthetic characteristics of four fresh jujube varieties(lines)were compared and analyzed.[Result]The daily average net photosynthetic rate(Pn)of four fresh jujube varieties(lines)was 4.21µmol/(m2·s)(Dongzao),5.74 µmol/(m2·s)(Panzao),6.02µmol/(m2·s)(XLCZ)and 3.41µmol/(m2·s)(Fucuimi),respectively.The daily variation of net photosynthetic rate of XLCZ and Panzao both showed a typical single peak curve,without the phenomenon of"midday rest".Dongzao and Fucuimi exhibited a distinct bimodal pattern.The response curves of four fresh jujube varieties(lines)to photosynthetically active radiation were basically consistent.The net photosynthetic rate increased with the increase of photosynthetically active radiation.When the light intensity reached the saturation point,the change in the net photosynthetic rate growth curve tended to be gentle.The light compensation point was XLCZ>Fucuimi>Dongzao>Panzao,and the light saturation point was XLCZ>Fucuimi>Panzao>Dongzao.The four fresh jujube varieties(lines)all showed higher water use efficiency in the morning than in the afternoon,with Dongzao>Fucuimi>Panzao>XLCZ.[Conclusion]Four jujube varieties(lines)all have relatively strong light adaptability in Aksu region of Xinjiang.Dongzao and Panzao have relatively better shade tolerance and can utilize weak light better,while Fucuimi can utilize strong light better.
关键词
鲜食枣/光合日变化/光响应曲线/光合特征参数Key words
fresh jujube/diurnal variation of photosynthesis/light response curve/photosynthetic characteristic parameters引用本文复制引用
基金项目
2021年新疆维吾尔自治区林业发展补助资金项目(XJLYKJ2021-12)
新疆维吾尔自治区红枣产业技术体系专项资金项目(XJCYTX-01-02)
2021年中央财政林业改革发展资金项目(新[2021]TG02)
出版年
2024
国家科技期刊平台
NSTL
维普
万方数据