Acta Agrestia Sinica

Acta Agrestia Sinica ›› 2024, Vol. 32 ›› Issue (11): 3417-3424.DOI: 10.11733/j.issn.1007-0435.2024.11.009

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Correlation Analysis Between Photosynthetic Characteristics and Phenotypic Traits of Smooth Bromegrass with Different Leaf Colors

Chaomuliga1,2,3, SUN Yu-yang1,2,3, SONG Bing1,2,3, ZHANG Yan-hui1,2,3, SUN Qiang4   

  1. 1. Key Laboratory of Grassland Resources and Ecology of Western Arid Desert Area, Ministry of Education, Urumqi, Xinjiang 830052, China;
    2. Xinjiang Key Laboratory of Grassland Resources and Ecology, Urumqi, Xinjiang 830052, China;
    3. College of Grassland Science, Xinjiang Agricultural University, Urumgi, Xinjiang 830052, China;
    4. Grassland Master Station of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang 830049, China
  • Received:2024-01-31 Revised:2024-04-04 Published:2024-11-29

不同叶色无芒雀麦光合特性与表型性状的相关性分析

朝木力嘎1,2,3, 孙宇阳1,2,3, 宋冰1,2,3, 张延辉1,2,3, 孙强4   

  1. 1. 西部干旱荒漠区草地资源与生态教育部重点实验室, 新疆 乌鲁木齐 830052;
    2. 新疆草地资源与生态实验室, 新疆 乌鲁木齐 830052;
    3. 新疆农业大学草业学院, 新疆 乌鲁木齐 830052;
    4. 新疆维吾尔自治区草原总站, 新疆 乌鲁木齐 830049
  • 通讯作者: 张延辉,E-mail:549136952@qq.com;孙强,E-mail:717542457@qq.com
  • 作者简介:朝木力嘎(1997-),女,蒙古族,内蒙古赤峰人,硕士研究生,主要从事草种质资源与育种研究,E-mail:2670140714@qq.com
  • 基金资助:
    新疆维吾尔自治区草原生态修复治理补助项目(XJCYZZ202203)；2023年中央财政林草科技推广示范项目(新[2023]TG01号-01)资助

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Abstract: In this study,we explored the relationship between phenotypic traits and photosynthetic characteristics of Bromus inermis Leyss. with different leaf colors. Two types of leaf-colored smooth bromegrass were selected,and phenotypic traits and photosynthetic parameters were measured. Correlation analysis was conducted between phenotypic traits and photosynthetic characteristics. The results showed that there were significant differences (P<0.05) in phenotypic traits and photosynthetic parameter indices among the six different smooth bromegrass materials. Among them,the relative chlorophyll content of the dark green materials was higher. This index was significantly positively correlated to leaf length,leaf width,spike length,and stem-leaf ratio (P<0.05). The intercellular CO2concentration,stomatal conductance,and net photosynthetic rate of dark green smooth bromegrass were higher than those of light green smooth bromegrass. The indicators such as leaf length,leaf width,net photosynthetic rate,and stomatal conductance of light green materials were relatively low,but their transpiration rate was low,and the vapor pressure deficit was high,further indicating a positive correlation between leaf color and photosynthesis. The six materials were ranked from high to low using the membership function method as follows:WL-52>WL-33>WL-04>YS-03>WL-57>WL-42. This study preliminarily reveals the relationship between phenotypic traits and photosynthetic characteristics,providing reference for the study of photosynthetic characteristics of smooth bromegrass resources and laying the foundation for screening high-light efficiency smooth bromegrass excellent germplasm.

Key words: Smooth bromegrass, Leaf color, Phenotypic traits, Photosynthetic characteristics

摘要： 本文探究不同叶色无芒雀麦(Bromus inermis Leyss.)表型性状与光合特性的关系，选取两种叶色的无芒雀麦，测定其表型性状及光合特性参数，并对表型性状和光合特性之间的关系进行相关性分析。结果表明：6种不同无芒雀麦材料中表型性状和光合参数指标差异显著(P<0.05)，其中，深绿色材料的叶片叶绿素相对含量较高，该指标与叶长、叶宽、穗长与茎叶比显著正相关(P<0.05)，其胞间CO2浓度与气孔导度、净光合速率等均高于浅绿色无芒雀麦；浅绿色材料的叶长、叶宽、净光合速率、气孔导度等指标偏低，但其蒸腾速率较低，水蒸气压亏缺较高，进一步说明叶色与光合作用呈现正相关关系。通过隶属函数法对6种材料进行排序，从高到低依次为WL-52>WL-33>WL-04>YS-03>WL-57>WL-42。本研究初步揭示了表型性状与光合特性之间关系，为无芒雀麦资源的光合特性研究提供了参考，也为筛选高光效无芒雀麦优异种质提供了依据。

关键词: 无芒雀麦, 叶色, 表型性状, 光合特性

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