冬小麦品种(系)旗叶叶脉性状及其与气孔性状间的关联性

生态学杂志

冬小麦品种(系)旗叶叶脉性状及其与气孔性状间的关联性

陈伟月^1,2,刘存海³,李秧秧^2,3**,闵东红⁴

（¹西北农林科技大学林学院，陕西杨凌 712100； ²西北农林科技大学水土保持研究所，陕西杨凌 712100； ^3中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室，陕西杨凌 712100； ^4西北农林科技大学农学院，陕西杨凌 712100）

出版日期:2014-07-10 发布日期:2014-07-10

Flag leaf vein traits in winter wheat varieties (lines) and their correlation with stomatal traits.

CHEN Wei-yue^1,2, LIU Cun-hai³, LI Yang-yang^2,3**-, MIN Dong-hong^4

(¹College of Forestry, Northwest A&F University, Yangling 712100, Shaanxi, China; ² Institute of Soil and Water Conservation, Northwest A&F University, Yangling 712100, Shaanxi, China; ³ State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, Shaanxi, China; ^4 College of Agronomy, Northwest A&F University, Yangling 712100, Shaanxi, China)

Online:2014-07-10 Published:2014-07-10

摘要/Abstract

摘要：

植物叶脉结构决定着叶水分运输能力，而气孔特性则与水分散失有关，研究二者间的关联性对认识与植物水分利用有关的生理功能间关系及其调控有重要理论价值。本研究以冬小麦为例，系统研究了15个小麦品种(系)旗叶的叶脉性状及其与气孔性状间的关联性。结果表明：在小麦3种类型叶脉中，小纵向脉的密度占叶脉密度的65.8%；小纵向脉间距与大纵向脉间距及横向脉间距均呈显著正相关，大、小纵向脉密度与其间距呈极显著负相关；供试小麦品种（系）叶片上、下表面的气孔大小相差不大，但上表面气孔密度显著高于下表面，上、下表面的气孔长、气孔宽与气孔密度存在显著正相关，但气孔长与气孔密度之间存在显著负相关；3种类型叶脉中，大纵向脉与气孔特征间并无显著相关关系，而小纵向脉、横向脉和气孔特征间存在一定的相关性，小麦品种（系）叶脉密度与下表面气孔密度和总气孔密度呈显著正相关，但与上表面气孔长呈显著负相关，从而揭示了小麦品种（系）水分供给和需求存在协调性的结构基础。

关键词: 分子营养标记, 共生珊瑚, 异养营养

Abstract: Leaf venation decides water transport capacity, while stomatal traits are closely related with water loss. How leaf venation is coordinated with stomatal traits is fundamental to probe the relationship between physiological functions related with water use and their adjustment. Taking winter wheat as an example, we studied leaf vein traits and their relationship with stomatal traits of 15 winter wheat varieties (lines). Density of small longitudinal veins accounted for 65.8% of total leaf vein density. Distance between small longitudinal veins was significantly and positively related with distance between large longitudinal veins and distance between transverse veins. Density of large longitudinal veins and small longitudinal veins were negatively correlated with their distance. Stomatal size on both surfaces was similar, but leaf adaxial surface had a higher stomatal density. Stomatal length, width and density on the adaxial surface were positively related with those on the abaxial surface, a tradeoff relation was found between stomatal length and density for both surfaces. Small longitudinal veins and transverse veins were closely related with stomatal traits, but it was not so for large longitudinal veins. Leaf vein density was positively related with stomatal density on the abaxial surface and total stomatal density, but negatively related with stomatal length on the adaxial surface. These results demonstrated the structural basis of the coordination between leaf water supply and demand in different wheat varieties (lines).

Key words: symbiotic coral, heterotrophic nutrition, molecular nutrition markers

陈伟月1,2,刘存海3,李秧秧2,3**,闵东红4. 冬小麦品种(系)旗叶叶脉性状及其与气孔性状间的关联性[J]. 生态学杂志.

CHEN Wei-yue1,2, LIU Cun-hai3, LI Yang-yang2,3**-, MIN Dong-hong4. Flag leaf vein traits in winter wheat varieties (lines) and their correlation with stomatal traits.[J]. cje.